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Use of organic fertilizers with microbes for improving maize growth, physiology and soil properties

Uso de fertilizantes orgânicos com micróbios para a melhora do crescimento de milho, da fisiologia e das propriedades do solo

Abstract

Integrated nutrient management is a promising way to avoid plant nutrient shortages because of the positive relationship between the bioavailability of nutrients and greater economic interest in their application through organic amendments and microbial application. To examine how compost, charcoal, and rhizobium influence maize development, an experiment was set up in a container. In addition to the appropriate amounts of nitrogen, phosphorous, and potassium, the soil in the allotted pots was treated with 50 ml of rhizobium, 5 tonnes of compost, and 2.5 tonnes of biochar before maize seeds were planted. A total of nine treatments (with three replicates each) were arranged in a completely randomized design for this experiment. Various agronomic, chemical, and physiological data were measured and recorded after the crop was harvested 110 days after sowing. The results showed that when biochar, compost, and rhizobium were applied together, the root fresh biomass rose by 43.4%, the root dry biomass increased by 38.3%, and the shoot length increased by 61.7%, compared to the control treatment. Chlorophyll content (41.3% higher), photosynthetic rate (58.5% higher), transpiration rate (64.4% higher), quantum yield (32.6% higher), and stomatal conductivity (25.3% higher) were all significantly improved compared to the control. Soil levels of nitrogen, phosphorus, and potassium were also improved with this treatment compared to the control. The combined use of biochar, compost, and rhizobium was more successful than any of the components used individually in boosting maize yields. Based on the findings of our study, the integration of rhizobium, biochar, and compost within a unified treatment shown a substantial enhancement in both the growth and yield of maize.

Keywords:
nutrient deficiency; organic fertilizers; microbial application; yield

Resumo

A gestão integrada de nutrientes é uma forma promissora de evitar a escassez de nutrientes nas plantas devido à relação positiva entre a biodisponibilidade de nutrientes e o maior interesse econômico na sua aplicação, por meio de corretivos orgânicos e aplicação microbiana. Para examinar como o composto, o carvão e o rizóbio, influenciam o desenvolvimento do milho, foi montada uma experiência num recipiente. Além das quantidades adequadas de azoto, fósforo e potássio, o solo nos vasos atribuídos foi tratado com 50 ml de rizóbio, 5 toneladas de composto e 2,5 toneladas de biocarvão antes de as sementes de milho serem plantadas. Um total de 9 tratamentos (com 3 repetições cada) foram dispostos em delineamento inteiramente casualizado para este experimento. Vários dados agronômicos, químicos e fisiológicos foram medidos e registrados após a colheita da cultura, 110 dias após a semeadura. Os resultados mostraram que quando biochar, composto e rizóbio foram aplicados juntos, a biomassa fresca da raiz aumentou 43,4%, a biomassa seca da raiz aumentou 38,3% e o comprimento da parte aérea aumentou 61,7%, em comparação com o tratamento controle. O conteúdo de clorofila (41,3% maior), a taxa fotossintética (58,5% maior), a taxa de transpiração (64,4% maior), o rendimento quântico (32,6% maior) e a condutividade estomática (25,3% maior) foram todos significativamente melhorados em comparação com o controle. Os níveis de nitrogênio, fósforo e potássio no solo também melhoraram com este tratamento em comparação com o controle. O uso combinado de biocarvão, composto e rizóbio foi mais bem sucedido do que qualquer um dos componentes utilizados individualmente no aumento da produtividade do milho. Com base nas descobertas do nosso estudo, a integração de rizóbio, biocarvão e composto num tratamento unificado mostrou uma melhoria substancial tanto no crescimento como no rendimento do milho.

Palavras-chave:
deficiência de nutrientes; fertilizantes orgânicos; aplicação microbiana; colheita

1. Introduction

Production of maize is often higher among all cereals around the globe (Blomme et al., 2023BLOMME, G., KEARSLEY, E., BUTA, S., CHALA, A., KEBEDE, R., ADDIS, T. and YEMATAW, Z., 2023. Enset production system diversity across the southern Ethiopian highlands. Sustainability (Basel), vol. 15, no. 9, pp. 7066. http://dx.doi.org/10.3390/su15097066.
http://dx.doi.org/10.3390/su15097066...
). It is the first major cereal crop worldwide while ranking third in Pakistan. All maize plant parts are being used, such as food for peoples, chicken feed and fodder for animals. Aside from that, it's a high-protein (10%), dietary fiber (72%), and calorie density (365 kcal/100g) food with low fat content (4%). It is used in various industrial products such as corn oil, sweeteners, alcohol (ethanol), sorbitol, liquid glucose, starch and corn gluten (Shete et al., 2023SHETE, G.S., NIKAM, S.D., SURBHAIYYA, S.D., JADHAV, M.P. and THAKARE, T.N., 2023. Analysis of Genetic Diversity in Maize (Zea mays L.) Variety Using SSR Markers. International Journal of Plant and Soil Science, vol. 35, no. 15, pp. 205-212. http://dx.doi.org/10.9734/ijpss/2023/v35i153098.
http://dx.doi.org/10.9734/ijpss/2023/v35...
). The steep corn liquor is the watery by-product of the wet milling process. Its straw is used for wood pellets to generate heat. Maize is vitally crucial for developing, where people are facing food shortage due to the increasing population.

The rising use of herbicides in the name of better and more sustainable agriculture has resulted in the contamination of agricultural soils with organic and inorganic contaminants (Spiertz, 2009SPIERTZ, J. H. J., 2009. Nitrogen, sustainable agriculture and food security: a review. In: E. LICHTFOUSE, M. NAVARRETE, P. DEBAEKE, S. VÉRONIQUE and C. ALBEROLA, eds. Sustainable agriculture (pp. 635-651). Dordrecht: Springer. https://doi.org/10.1007/978-90-481-2666-8_39.
https://doi.org/10.1007/978-90-481-2666-...
). Macronutrient deficiencies are widely regarded as the most significant growth-limiting nutrient component. Because of their high pH and lack of organic matter, Pakistan's soils are calcic and alkaline, reducing the total existence and availability of numerous nutrients. Lack of nitrogen in the soil has been cited as the main reason for maize failure in dryland. In addition, a lack of it triggers abnormalities in the physiological processes of plants, such as necrosis and chlorosis (de Bang et al., 2021DE BANG, T.C., HUSTED, S., LAURSEN, K.H., PERSSON, D.P. and SCHJOERRING, J.K., 2021. The molecular–physiological functions of mineral macronutrients and their consequences for deficiency symptoms in plants. The New Phytologist, vol. 229, no. 5, pp. 2446-2469. http://dx.doi.org/10.1111/nph.17074. PMid:33175410.
http://dx.doi.org/10.1111/nph.17074...
). However, optimal yield can be achieved by the use of inorganic nutrient sources in conjunction with organic amendments (Sohail et al., 2021SOHAIL, S., GONDAL, A.H., FAROOQ, Q., TAYYABA, L., ZAINAB, D.E., AHMAD, I.A., ZAFAR, A., KHOSA, S.Y. and USAMA, M. (2021). Organic vegetable farming; a valuable way to to ensure sustainability and profitability. In: E. YILDIRIM and M. EKINCI, eds. Vegetable crops-health benefits and cultivation (101095). London: IntechOpen.http://dx.doi.org/10.5772/intechopen.101095.
http://dx.doi.org/10.5772/intechopen.101...
).

Farmers can reap the benefits of biochar right away, as it has been shown to enhance the soil's physical and chemical qualities. These advantages immediately lead to higher biomass and grain output in agricultural production. For instance, a quantitative review conducted by Jeffery et al. (2011)JEFFERY, S., VERHEIJEN, F.G., VAN DER VELDE, M. and BASTOS, A.C., 2011. A quantitative review of the effects of biochar application to soils on crop productivity using meta-analysis. Agriculture, Ecosystems & Environment, vol. 144, no. 1, pp. 175-187. http://dx.doi.org/10.1016/j.agee.2011.08.015.
http://dx.doi.org/10.1016/j.agee.2011.08...
found that biochar increased agricultural productivity by an average of 10% when applied to fields. This is correct, especially considering the fact that the biochar fraction has a fixed, low amount of N. Wheat straw biochar at 20 and 40 Mg ha1 increased maize (Zea mays L.) grain yield by 8.8 and 12.1% (Cho et al., 2023CHO, S.H., LEE, S., KIM, Y., SONG, H., LEE, J., TSANG, Y.F., CHEN, W.H., PARK, Y.K., LEE, D.J., JUNG, S. and KWON, E.E., 2023. Applications of agricultural residue biochars to removal of toxic gases emitted from chemical plants: a review. The Science of the Total Environment, vol. 868, pp. 161655. http://dx.doi.org/10.1016/j.scitotenv.2023.161655. PMid:36649775.
http://dx.doi.org/10.1016/j.scitotenv.20...
). Biochars' ability to sorb glyphosate increased with higher pyrolysis temperatures, reaching a maximum at 900 °C, while overall sorption was minimal on a mass basis. Lower sorption capabilities are observed in biochar with a higher micropore percentage (Gondal et al., 2023bGONDAL, A.H., KHAN, M.I., CHEEMA, S.A., HUSSAIN, M.I., ALI, B., NAWAZ, M., DAWOOD, M. and MURTAZA, G., 2023b. The co-application of bioslurry and compost with inorganic zinc fertilizer improved soil quality, zinc uptake, and growth of maize crop.Arabian Journal of Geosciences,16(6), 393. https://doi.org/10.1007/s12517-023-11503-0.
https://doi.org/10.1007/s12517-023-11503...
; Gondal, 2023GONDAL, A.H., 2023. Nanotechnology advancement in the elimination of chemical toxins from air spectrums. International Journal of Environmental Science and Technology, vol. 20, no. 11, pp. 1-18. http://dx.doi.org/10.1007/s13762-023-04902-z.
http://dx.doi.org/10.1007/s13762-023-049...
; Gondal and Tayyiba, 2022GONDAL, A.H. and TAYYIBA, L., 2022. Prospects of using nanotechnology in agricultural growth, environment and industrial food products. Reviews in Agricultural Science, vol. 10, no. 0, pp. 68-81. http://dx.doi.org/10.7831/ras.10.0_68.
http://dx.doi.org/10.7831/ras.10.0_68...
).

The Rhizobium treated crop plants showed improved growth and physiology and nutrient contents. Furthermore, they have the potential to produce and solubilize rhizosphere-based indole 3-acetic acid (IAA) and promote plant growth even in unfavourable conditions and water stressed conditions (Ahmad et al., 2013AHMAD, M., ZAHIR, Z.A., KHALID, M., NAZLI, F. and ARSHAD, M., 2013. Efficacy of Rhizobium and Pseudomonas strains to improve physiology, ionic balance and quality of mung bean under salt-affected conditions on farmer’s fields. Plant Physiology and Biochemistry, vol. 63, pp. 170-176. http://dx.doi.org/10.1016/j.plaphy.2012.11.024. PMid:23262185.
http://dx.doi.org/10.1016/j.plaphy.2012....
; Mishra et al., 2012MISHRA, P.K., BISHT, S.C., MISHRA, S., SELVAKUMAR, G., BISHT, J.K. and GUPTA, H.S., 2012. Coinoculation of Rhizobium leguminosarum-PR1 with a cold tolerant Pseudomonas sp. improves iron acquisition, nutrient uptake and growth of field pea (Pisum sativum L.). Journal of Plant Nutrition, vol. 35, no. 2, pp. 243-256. http://dx.doi.org/10.1080/01904167.2012.636127.
http://dx.doi.org/10.1080/01904167.2012....
). Rhizobium can also impact the roots of non-legumes by inducing the formation of nodules, thereby facilitating their growth by means of chemical secretions such as lumichrome, oligosaccharides, and organic P mineralization. Additionally, Rhizobium promotes the production of siderophores, solubilizes precipitated P, and modifies root morphology to enhance nutrient availability for plants (Raja et al., 2021RAJA, B.L., AIT-EL-MOKHTAR, M., MOHAMED, A., ABDERRAHIM, B., YOUSSEF, A.R., ANAS, R., OUFDOU, K., WAHBI, S. and ABDELILAH, M., 2021. Green compost combined with mycorrhizae and rhizobia: a strategy for improving alfalfa growth and yield under field conditions. Gesunde Pflanzen, vol. 73, no. 2, pp. 193-207. http://dx.doi.org/10.1007/s10343-020-00537-z.
http://dx.doi.org/10.1007/s10343-020-005...
). Indirectly, Rhizobium improves the growth of non-leguminous plant by controlling pathogens, competition between with pathogens for space and nutrients.

Compost increased the soil fertility level, which helps to solve the problems of farmer and lead to enrich the soil productivity, decrease the attack of various diseases and pests and ultimately enhancement in crop yield. The application of a maximum dose of compost has been seen to enhance the soil infiltration rate, hence increasing the water-holding capacity. This augmentation enables roots to effectively absorb greater quantities of water and nutrients over an extended duration. The application of compost has been found to decrease soil bulk density and enhance soil aggregation, soil aeration, and water availability to plants. Compost contains humic substances, which influence the soil nutrition and improve its aggregate by enhancing microbial activities. Use of compost as an organic amendment rises the soil microbial activity, biomass and soil biota, which are the best indicators of soil quality and health (Zainab et al., 2021ZAINAB, D., ZAFA, A., SOHAIL, S., HAIDER, S., REHMAN, B., SHAH, M.S., ASLAM, M.N. and HUSNAIN, M.M.U., 2021. A brief study of quinoa role and its adaptation towards salinity and drought stress. Current Research in Agriculture and Farming, vol. 2, no. 3, pp. 27-40. http://dx.doi.org/10.18782/2582-7146.143.
http://dx.doi.org/10.18782/2582-7146.143...
).

However, the present challenges that need to be addressed through proper techniques are limited land resources and the environmental effects of synthetic fertilisers. Plant development and output can be greatly improved by using organic fertiliser in addition to the necessary amounts of inorganic fertiliser. Few attempts have been made to increase maize growth and production by combining various organic amendments with inorganic fertiliser. Crop growth, production, and food safety can all be improved with the use of organic amendments like compost, rhizobium, and compost.

2. Materials and Methods

2.1. Experimental location

A pot experiment on maize crops was conducted to check the effect of the organic amendment (compost and biochar) with rhizobium on maize plant physiology, soil quality and maize growth. This research was conducted in the professional school of agronomy, National University of Huancavelica, Huancavelica – Peru.

2.2. Procedure

The soil was collected from the research area professional school of agronomy, National University of Huancavelica, Huancavelica – Peru. After collection, the soil was thoroughly mixed for homogenization and air-dried to sieve it. A suitable sieve size of 2 mm was used to sieve the collected soil sample. Then, sieved soil was used to fill the pot, and 10 kg sieved soil was placed in each pot. The compost, biochar and rhizobium were used. The rhizobium @ 10 ton per hectare, compost @ 5 ton/ha and biochar @ 2.5 ton/ha were applied to the selected pots before sowing. Following that, compost (25 g/pot), rhizobium (50 ml/pot) and biochar (12.5 g/pot) were added. Treatments details included the compost, biochar and rhizobium application solely and their combinations (Table S1). Sowing of the seeds was done after filling the pots with amended soil according to the treatment. In every pot, three seeds of the maize were sown. After germination of the maize, the thinning process was done to maintain one plant in each pot. The recommended doses of P (6.53 g), N (2.5 g) and K (0.927 g) for maize crops were added before sowing by using single super phosphate, urea and muriate of potash as sources, respectively. The N was added in three splits, while K and P were added at the sowing time. Field capacity was established and maintained at 70% to maintain the ideal crop's water level. To maintain 70% of field capacity, 875 ml water was used. Following that, the water level was kept at the specified field capacity on a daily basis. Harvesting was completed after 110 days after planting the crop and different attributes were analyzed. Preharvest analysis has been shown in Supplementary Material (Table S2).

2.3. Agronomic and physiological parameters

A measuring scale was used to record the lengths of the roots and the shoots. An electrical weighing balance (Kern, ABJ 220-4NM, India) was used to measure the dried and fresh weights of the roots and shoots. Stem diameter was measured by vernier callipers in mm. All the physiological attribute were measured by the SPAD-502+ meter and photosynthetic yield analyzer.

2.4. Chemical parameters

In order to determine the chemical attributes, soil sample were collected from harvested crop. The tap water was added in 250 g of soil and allowed it to stand for overnight. After 24 hours this mixture was properly mixed with the help of a spatula until or unless soil saturated paste was formed. Soil saturated extract was obtained by applying pressure on chamber in which soil paste was added and then extract was obtained after filtration. Soil extract was preserved by adding one drop sodium hexametaphosphate in 25 ml extract and this was done to minimize the precipitation of salts. The pH of the extract was determined by pH meter. N, P and K were determined by the procedure adopted in ICARDA manual (Areche et al., 2022)ARECHE, F.O., GONDAL, A.H., LANDEO, O.T., FLORES, D.D.C., RODRÍGUEZ, A.R., PÉREZ, P.L., HUAMAN, J.T., ROMAN, A.V. and CORREO, R.J.M.Y. (2022). Innovative trends in reducing food waste and ensuring a more sustainable food system and environment.CABI Reviews. https://doi.org/10.1079/cabireviews202217053.
https://doi.org/10.1079/cabireviews20221...
.

Different parameters such as organic carbon and total organic carbon were determined by using the Equation 1, 2 and 3. The Walkley black technique is used to determine the amount of organic matter in a sample. The 10 ml of 1.0 N potassium dichromate (K2Cr2O7) was mixed with 1.0 g of soil in a conical flask (500 ml). Following that, 20 ml sulfuric acid was added, properly mixed, and the flask mixture was put aside for 30 minutes. After that, tap water (200 ml) along with phosphoric acid (10 ml) solution was added to the same flask and the mixture was allowed to cool. When the solution was cooled, diphenylamine was used as an indicator to titrate it against 0.5 M FeSO4 until the colour changed from violet-blue to green. It was observed how much ferrous ammonium sulphate was utilized.

2.4.1. Calculations

Oxidizable-organic carbon Blank-sample 0.38 molarity of FeSO 4 Weight-of-soilo (1)

2.4.2. Total organic carbon

% T o t a l o r g a n i c c a r b o n T O C = 1.334 * o x i d i z a b l e o r g a n i c c a r b o n (2)
% O . M . = 1.723 * T O C (3)

2.5. Statistical analysis

The “Statistix 8.1” software was used to determine the significance of treatments through one-way analysis of variance (ANOVA). The least significant difference test (LSD) was also applied to compare differences between means at 5% level (p ≤ 0.05).

2.6. Correlation among different attributes of maize plants

Correlation analysis showed that there was a highly significant relationship among all the growth, physiological and chemical parameters of maize. Figure S1 (Supplementary Material) revealed a correlation matrix graphically by corrplot. A highly significant association was observed in growth physiological and nutrient parameters of maize

3. Results

3.1. Effects of organic and inorganic supplements on agronomic attributes of maize plants

3.1.2. Germination %

The findings of the current study demonstrated that organic fertilizers and microbial application significantly increased germination percentage (Figure 1). The application of compost and biochar fertilizer along with rhizobium increased the seed germination percentage by 73.2% that was the first most effective treatment. Similarly, second most effective treatment was rhizobium and compost application that increased the germination percentage 64.4% in comparison to control. Single application of rhizobium treatment increased the germination percentage higher than that of control and other single treatments (Figure 1).

Figure 1
The influence of microbial treatment and organic fertilization on the germination % of a maize crop. Ctrl, control; R, rhizobium; C, banana peel compost; B, biochar. Means with different letters are significantly different according to the LSD test at P ≤ 0.05.

The results of our study indicate that the combination of rhizobia and organic fertilisers had a considerable positive effect on the growth of maize plants, as demonstrated by the observed increase in plant length (Figure 1). The addition of rhizobium in conjunction with composting resulted in a significant increase in the length of maize plants when compared to the control group, as indicated in Table 1. Based on the findings presented, it can be observed that the utilization of organic fertilizers enriched with bacteria has a substantial impact on the vertical growth of maize plants. The combination of composting and microbial treatment, in conjunction with biochar, led to a significant enhancement of 61.7% in the shoot length of maize plants and a notable rise of 44.6% in root length, as compared to the control group that was just planted (refer to Table 1). The relative water contents also followed this pattern (Figure 2). Maize plants grew longer after receiving rhizobium, compost, and biochar as opposed to a control group that received no amendments. Composting and biochar supplemented with rhizobium had a good effect on a variety of other caigua plant metrics as well, including plant diameter, leaf count, fresh weight, and dry weight of maize (Table 1). In addition, the treatment applications taken separately outperformed the control group (Table 1).

Table 1
Role of organic fertilizers in improving the agronomic parameters of maize crop.
Figure 2
Effects of organic fertilizers on relative water contents of maize plants. Ctrl, control; R, rhizobium; C, banana peel compost; B, biochar. Means with different letters are significantly different according to the LSD test at P ≤ 0.05.

The results demonstrated that, compared to the control, the maize plant's response to composting and biochar applications was statistically significant (p0.05). The physiological characteristics of the maize crop were greatly enhanced by all of the compost concentrations. Fluorescence yield (51.1%), quantum yield (66.4%), chlorophyll contents (68.8%), electron transport reaction (74.0%), and photosynthetically active radiation (79.2%) of maize plants were all highest when composting, biochar, and rhizobium were applied together, as shown in Table 2. When compared to the control group, each treatment group excelled. Both rhizobium and composting treatments outperformed the control in a number of physiological metrics, including fluorescence yield (39% and 35%), quantum yield (53% and 47%), chlorophyll contents (46% and 36%), electron transport reaction (52% and 36%), and photosynthetically active radiation (56% and 40%). The results showed that physiological properties of maize were considerably (p0.05) boosted when composting was combined with rhizobium and charcoal.

Table 2
Effects of organic and inorganic supplements on physiological parameters of maize plants.

3.1.3. Chemical attributes of maize plant

Table 3 displays the statistical significance of the differences between before and after using composting and biochar with rhizobium application on soil chemical characteristics. After harvest, there was a notable response to the treatments in the soil in terms of organic carbon, organic matter, N, and K and P contents (Table 3). Composting and biochar plus rhizobium application resulted in the greatest increase in soil organic matter content (0.57%) compared to the unfertilized (control) treatment (0.57%) (Table 3). All of the chemical characteristics listed in Table 3 followed the same pattern. All of these soil properties at various treatment levels were found to have a significant connection with one another (P0.05). As can be seen in Table 3, the soil's organic carbon, NPK, and organic matter were all significantly increased thanks to the organic additions. After crop harvesting, soil samples were analyzed at INIA (National Institute of Agrarian Innovation) - Huaral, where the results indicated a slightly lower pH, a higher percentage of organic matter, higher levels of N and P, and an average concentration of K.

Table 3
Effects of combined application of microbial and organic application on soil parameters of maize plants.

4. Discussion

According to the evaluations of the physical characteristics of the caigua that can be seen in above result section, it is indicated that the co addition of microbes and composting is dominant in improving the maize length, equatorial diameter, number of leaves per plant and their dry and fresh biomasses. Our findings on the increased growth of maize plants by composting endorse the observations of Monda et al. (2017)MONDA, H., COZZOLINO, V., VINCI, G., SPACCINI, R. and PICCOLO, A., 2017. Molecular characteristics of water-extractable organic matter from different composted biomasses and their effects on seed germination and early growth of maize. The Science of the Total Environment, vol. 590-591, pp. 40-49. http://dx.doi.org/10.1016/j.scitotenv.2017.03.026. PMid:28288420.
http://dx.doi.org/10.1016/j.scitotenv.20...
who reported that the composting is capable of enhancing plant growth by improving the soil nutrient availability and microbial activities. It might be because of composting promotes the growth of beneficial bacteria and fungus, which decompose organic materials to produce humus, a rich nutrient-filled substance. Gibberellins and indole-3-acetic acid are hormones that help plants grow. The bacteria may be releasing these hormones, which may help plants become more resistant to disease stress (Kang et al., 2014KANG, S.M., RADHAKRISHNAN, R., KHAN, A.L., KIM, M.J., PARK, J.M., KIM, B.R., SHIN, D.H. and LEE, I.J., 2014. Gibberellin secreting rhizobacterium, Pseudomonas putida H-2-3 modulates the hormonal and stress physiology of soybean to improve the plant growth under saline and drought conditions. Plant Physiology and Biochemistry, vol. 84, pp. 115-124. http://dx.doi.org/10.1016/j.plaphy.2014.09.001. PMid:25270162.
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; Etesami et al., 2015ETESAMI, H., ALIKHANI, H. A. and MIRSEYED HOSSEINI, H., 2015. Indole-3-acetic acid and 1-aminocyclopropane-1-carboxylate deaminase: bacterial traits required in rhizosphere, rhizoplane and/or endophytic competence by beneficial bacteria. In: D.K. MAHESHWARI, ed. Bacterial metabolites in sustainable agroecosystem. USA: Springer, pp. 183-258.). In addition, our findings showed co application of organic fertilizers and microbes enhanced the agronomic growth of maize. Composting with microbial application promoted the absorption of nutrients that influenced the development of lateral roots, shoots, flowers, thus obtaining higher yields. This is because most of the nutrients are present in composting and cytokinins that intervenes in many biochemical and hormonal reactions and promotes the development of the plant's organs, especially in carbohydrate formation and translation, which results in fruit quality (Laplaze et al., 2008LAPLAZE, L., BENKOVA, E., CASIMIRO, I., MAES, L., VANNESTE, S., SWARUP, R., WEIJERS, D., CALVO, V., PARIZOT, B., HERRERA-RODRIGUEZ, M.B., OFFRINGA, R., GRAHAM, N., DOUMAS, P., FRIML, J., BOGUSZ, D., BEECKMAN, T. and BENNETT, M., 2008. Cytokinins act directly on lateral root founder cells to inhibit root initiation. The Plant Cell, vol. 19, no. 12, pp. 3889-3900. http://dx.doi.org/10.1105/tpc.107.055863.
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, 2021bGONDAL, A.H., ZAFAR, H., YOUSAF, H., FAROOQ, Q., IMRAN, B., CH, M.D.T. and SALEEM, S., 2021b. Impacts of tillage technologies on soil, plant, environment and its management: a short communication. Indian Journal of Pure and Applied Biosciences, vol. 9, no. 3, pp. 76-83. http://dx.doi.org/10.18782/2582-2845.8682.
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). Similarly, other physiological parameters such as YII, ETR, PSR and Ft were also improved considerably. Improvement in intracellular enzymatic activities due to biostimulants and composting increase the uptake of essential nutrients leading towards the enhancement of chlorophyll production (Hamid et al., 2021HAMID, B., ZAMAN, M., FAROOQ, S., FATIMA, S., SAYYED, R.Z., BABA, Z.A., SHEIKH, T.A., REDDY, M.S., EL ENSHASY, H., GAFUR, A. and SURIANI, N.L., 2021. Bacterial plant biostimulants: a sustainable way towards improving growth, productivity, and health of crops. Sustainability (Basel), vol. 13, no. 5, pp. 2856. http://dx.doi.org/10.3390/su13052856.
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; Cotrina Cabello et al., 2023COTRINA CABELLO, G.G., RUIZ RODRIGUEZ, A., HUSNAIN GONDAL, A., ARECHE, F.O., FLORES, D.D.C., ASTETE, J.A.Q. CAMAYO-LAPA, B.F., YAPIAS, R.J.M., JABBAR, A., SALDARRIAGA, J.Y., SALAS-CONTRERAS, W.H. and CRUZ NIETO, D.D., 2023. Plant adaptability to climate change and drought stress for crop growth and production.CABI Reviews, 1-9. https://doi.org/10.1079/cabireviews.2023.000.
https://doi.org/10.1079/cabireviews.2023...
; Younas et al., 2022YOUNAS, T., CABELLO, G.G.C., TAYPE, M.A., CARDENAS, J.A.L., TRUJILLO, P.D.C., SALAS-CONTRERAS, W.H., YAULILAHUA-HUACHO, R., ARECH, F.O., RODRIGUEZ, A.R., CRUZ NIETO, D.D., CHIRRE, E.T.C. and GONDAL, A.H., 2022. Conditioning of desert sandy soil and investigation of the ameliorative effects of poultry manure and bentonite treatment rate on plant growth. Brazilian Journal of Biology = Revista Brasileira de Biologia, vol. 82, pp. e269137. https://doi.org/10.1590/1519-6984.269137.
https://doi.org/10.1590/1519-6984.269137...
; Gondal et al., 2023aGONDAL, A.H., BHAT, R.A., GÓMEZ, R.L., ARECHE, F.O. and HUAMAN, J.T., 2023a. Advances in plastic pollution prevention and their fragile effects on soil, water, and air continuums. International Journal of Environmental Science and Technology, vol. 20, no. 6, pp. 6897-6912. http://dx.doi.org/10.1007/s13762-022-04607-9.
http://dx.doi.org/10.1007/s13762-022-046...
). Chemical factors like organic carbon, organic matter, N, K, Zn, and P all got better when cytokinin and composting were used as a treatment. Lim et al. (2015)LIM, S.L., WU, T.Y., LIM, P.N. and SHAK, K.P.Y., 2015. The use of vermicompost in organic farming: overview, effects on soil and economics. Journal of the Science of Food and Agriculture, vol. 95, no. 6, pp. 1143-1156. http://dx.doi.org/10.1002/jsfa.6849.
http://dx.doi.org/10.1002/jsfa.6849...
found the same things we did. Organic matter in the soil is essential because it enhances the soil's chemical, physical, and biological properties, all of which contribute to its overall quality (Gondal et al., 2021b, 2022aGONDAL, A.H., ZAFAR, H., YOUSAF, H., FAROOQ, Q., IMRAN, B., CH, M.D.T. and SALEEM, S., 2021b. Impacts of tillage technologies on soil, plant, environment and its management: a short communication. Indian Journal of Pure and Applied Biosciences, vol. 9, no. 3, pp. 76-83. http://dx.doi.org/10.18782/2582-2845.8682.
http://dx.doi.org/10.18782/2582-2845.868...
; Jiang et al., 2022JIANG, W., GONDAL, A.H., SHAHZAD, H., IQBAL, M., BUSTAMANTE, M.A.C., YAPIAS, R.J.M., MARCOS, R.N.C., ARECHE, F.O., VICTORIO, J.P.E., CABELLO, G.G.C. and NIETO, D.D.C., 2022. Amelioration of organic carbon and physical health of structurally disturbed soil through microbe–manure amalgam. Processes (Basel, Switzerland), vol. 10, no. 8, pp. 1506. http://dx.doi.org/10.3390/pr10081506.
http://dx.doi.org/10.3390/pr10081506...
). That's why compost, with its nutritional and organic matter content, makes for a great organic fertiliser. On top of that, organic matter is the single most important factor in a soil's overall productivity.

5. Conclusion

The favourable correlation between nutrient bioavailability and increasing economic interest in their administration via organic amendments and microbial application suggests that integrated nutrient management may be an effective strategy for preventing plant nutrient deficiency. Compared to the control, this treatment increased the soil's nitrogen, phosphorus, and potassium levels. The combined application of biochar, compost, and rhizobium had the highest efficacy in enhancing maize yields, surpassing the individual effects of each treatment. According to our research findings, the combined application of rhizobium, biochar, and compost on maize cultivation exhibits a significant enhancement in both plant growth and production.

ERRATUM

ERRATUM: Use of organic fertilizers with microbes for improving maize growth, physiology and soil properties

Due to author's honest mistake, the article “Use of organic fertilizers with microbes for improving maize growth, physiology and soil properties” (DOI https://doi.org/10.1590/1519-6984.276814), published in Brazilian Journal of Biology, vol. 83, 2023, e276814, was published with errors.

Where the text reads:

It is the first major cereal crop worldwide while ranking third in Pakistan. Pakistan’s soils are calcic and alkaline, reducing the total existence and availability of numerous nutrients.

It should read:

It is the first major cereal crop in the world. The soils of the district and province of Acobamba – Huancavelica in Peru are clayey, contain good nutrient reserves and the availability of numerous nutrients.

Where the text reads:

This research was conducted in the professional school of agronomy, National University of Huancavelica, Huancavelica – Peru.

It should read:

This research was carried out in the “Occopampa” neighborhood of the district and province of Acobamba – Huancavelica.

Where the text reads:

The soil was collected from the research area professional school of agronomy, National University of Huancavelica, Huancavelica – Peru

It should read:

The soil was collected from the “Occopampa” neighborhood research area of the district and province of Acobamba – Huancavelica.

Where the text reads:

Acknowledgements

All the authors are highly thankful to National University of Huancavelica, Huancavelica, Perú for their moral support.

It should read:

There is no need for Recognition. Will be deleted.

The authors apologize for the errors.

Acknowledgements

All the authors are highly thankful to National University of Huancavelica, Huancavelica, Perú for their moral support.

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Publication Dates

  • Publication in this collection
    13 Nov 2023
  • Date of issue
    2023

History

  • Received
    21 July 2023
  • Accepted
    07 Sept 2023
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