Potato yield and phosphorus nutrition using humic substances in two soil textures

The objective of this work was to evaluate the effect of humic substances (HS) and phosphorus fertilizer on the growth, P uptake, tuber yield, fertilizer P recovery (FPR), and applied P-use efficiency (APUE) of potato (Solanum tuberosum) cultivated in a sandy and in a clayey soils. In both soils, the experiment was carried out in a randomized complete block design, in a 4×3 factorial arrangement, with four replicates. The treatments consisted of four P rates (0, 100, 200, and 400 kg ha-1 P2O5) and of three HS rates (0, 50, and 300 L ha-1). Phosphate fertilization increased the P uptake and tuber yield of potato in both soils. Soil characteristics conditioned the effect of the addition of HS. In the sandy soil, with a lower content of organic matter (OM) than the clayey soil, the addition of HS increases the P uptake and FPR, besides providing a greater tuber yield and APUE, especially under the P absence or with the application of a reduced P rate. In the clayey soil, HS does not affect the response of potato to P fertilization.

Index terms:
Solanum tuberosum; humic acid; mineral nutrition; soil organic matter; soil texture

Authorship

Jéssyca Dellinhares Lopes Martins

Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Agronômicas, Departamento de Produção Vegetal, Campus de Botucatu, Avenida Universitária, no 3.780, Fazenda Experimental Lageado, CEP 18610-034 Botucatu, SP, Brazil. E-mail: dellinhares@hotmail.com, rogerio.soratto@unesp.brUniversidade Estadual PaulistaBrazilBotucatu, SP, BrazilUniversidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Agronômicas, Departamento de Produção Vegetal, Campus de Botucatu, Avenida Universitária, no 3.780, Fazenda Experimental Lageado, CEP 18610-034 Botucatu, SP, Brazil. E-mail: dellinhares@hotmail.com, rogerio.soratto@unesp.br

http://orcid.org/0000-0002-1953-2862

Rogério Peres Soratto ^**Corresponding author: rogerio.soratto@unesp.br

http://orcid.org/0000-0003-4662-126X

Adalton Mazetti Fernandes

Universidade Estadual Paulista Júlio de Mesquita Filho, Centro de Raízes e Amidos Tropicais, Campus de Botucatu, Avenida Universitária, no 3.780, Fazenda Experimental Lageado, CEP 18610-034 Botucatu, SP, Brazil. E-mail: adalton.fernandes@unesp.brUniversidade Estadual PaulistaBrazilBotucatu, SP, Brazil Universidade Estadual Paulista Júlio de Mesquita Filho, Centro de Raízes e Amidos Tropicais, Campus de Botucatu, Avenida Universitária, no 3.780, Fazenda Experimental Lageado, CEP 18610-034 Botucatu, SP, Brazil. E-mail: adalton.fernandes@unesp.br

http://orcid.org/0000-0002-6745-0175

*Corresponding author: rogerio.soratto@unesp.br

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (5)

Thumbnail

Figure 1.
Daily rainfall, irrigation, and maximum and minimum air temperatures recorded from the May to September 2015, in the experimental areas with the sandy (A) and clayey (B) soils, in São Manuel and Botucatu, respectively, in São Paulo state, Brazil.

Thumbnail

Figure 2.
Leaf P (A and B) and leaf Zn (C and D) concentrations, and shoot (E and F), tuber (G and H), and whole plant (I and J) dry matter (DM) of the potato cultivation affected by the use of humic substance (HS) and phosphate fertilizer rates, when cultivated in sandy (A, C, E, G, and I) and clayey (B, D, F, H, and J) soils. Vertical bars indicate the least significant difference to separate HS rates in a same phosphate fertilizer rate, by the Tukey’s test, at 5% probability. *, **Significant at 5% and 1%, respectively.

Thumbnail

Figure 3.
Concentration of P in shoots (A and B) and tubers (C and D), and total P uptake (E and F) of the potato crop affected by the use of humic substance (HS) and phosphate fertilizer rates, when cultivated in sandy (A, C, and E) and clayey (B, D, and F) soils. Vertical bars indicate the least significant difference to separate HS rates in a same phosphate fertilizer rate, by the Tukey’s test, at 5% probability. *, **Significant at 5% and 1%, respectively.

Thumbnail

Figure 4.
Fertilizer P recovery (FPR, A and B) and applied P-use efficiency (APUE, C and D) of the potato crop affected by the use of humic substance (HS) and phosphate fertilizer rates, when cultivated in sandy (A and C) and clayey (B and D) soils. HS rates are: 0 L ha^-1; 50 L ha^-1; 300 L ha^-1. Different lowercase letters indicate a significant difference among HS rates, whereas different uppercase letters indicate a significant difference among phosphate fertilizer rates, by the Tukey’s test, at 5% probability.

Thumbnail

Figure 5.
Number of tubers per plant (A and B), tuber mean weight (C and D), total tuber yield (E and F), and proportion of tubers with a diameter larger than 45 mm (G and H) of the potato crop affected by the use of humic substance (HS) and phosphate fertilizer rates, when cultivated in sandy (A, C, E, and G) and clayey (B, D, F, and H) soils. HS rate: 0 L ha^-1, 50 L ha^-1, 300 L ha^-1; and mean of three HS rates. Vertical bars indicate the least significant difference to separate HS rates in a same phosphate fertilizer rate, by the Tukey’s test, at 5% probability. *, **Significant at 5% and 1%, respectively.

Figure 1. Daily rainfall, irrigation, and maximum and minimum air temperatures recorded from the May to September 2015, in the experimental areas with the sandy (A) and clayey (B) soils, in São Manuel and Botucatu, respectively, in São Paulo state, Brazil.

Figure 2. Leaf P (A and B) and leaf Zn (C and D) concentrations, and shoot (E and F), tuber (G and H), and whole plant (I and J) dry matter (DM) of the potato cultivation affected by the use of humic substance (HS) and phosphate fertilizer rates, when cultivated in sandy (A, C, E, G, and I) and clayey (B, D, F, H, and J) soils. Vertical bars indicate the least significant difference to separate HS rates in a same phosphate fertilizer rate, by the Tukey’s test, at 5% probability. *, **Significant at 5% and 1%, respectively.

Figure 3. Concentration of P in shoots (A and B) and tubers (C and D), and total P uptake (E and F) of the potato crop affected by the use of humic substance (HS) and phosphate fertilizer rates, when cultivated in sandy (A, C, and E) and clayey (B, D, and F) soils. Vertical bars indicate the least significant difference to separate HS rates in a same phosphate fertilizer rate, by the Tukey’s test, at 5% probability. *, **Significant at 5% and 1%, respectively.

Figure 4. Fertilizer P recovery (FPR, A and B) and applied P-use efficiency (APUE, C and D) of the potato crop affected by the use of humic substance (HS) and phosphate fertilizer rates, when cultivated in sandy (A and C) and clayey (B and D) soils. HS rates are: 0 L ha^-1; 50 L ha^-1; 300 L ha^-1. Different lowercase letters indicate a significant difference among HS rates, whereas different uppercase letters indicate a significant difference among phosphate fertilizer rates, by the Tukey’s test, at 5% probability.

Figure 5. Number of tubers per plant (A and B), tuber mean weight (C and D), total tuber yield (E and F), and proportion of tubers with a diameter larger than 45 mm (G and H) of the potato crop affected by the use of humic substance (HS) and phosphate fertilizer rates, when cultivated in sandy (A, C, E, and G) and clayey (B, D, F, and H) soils. HS rate: 0 L ha^-1, 50 L ha^-1, 300 L ha^-1; and mean of three HS rates. Vertical bars indicate the least significant difference to separate HS rates in a same phosphate fertilizer rate, by the Tukey’s test, at 5% probability. *, **Significant at 5% and 1%, respectively.

How to cite

copy

Embrapa Secretaria de Pesquisa e Desenvolvimento; Pesquisa Agropecuária Brasileira Caixa Postal 040315, 70770-901 Brasília DF Brazil, Tel. +55 61 3448-1813, Fax +55 61 3340-5483 - Brasília - DF - Brazil
E-mail: pab@embrapa.br

Acompanhe os números deste periódico no seu leitor de RSS

Versão para download de PDF

PDF

Inglês

Versões e tradução automática

Versão original do texto

English

Tradução automática

Google Translator
Microsoft Translator

Como citar

RIS

BIBTEX

Outros formatos de citação e exportação:

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
E-mail: scielo@scielo.org

Leia a Declaração de Acesso Aberto

Métricas

Potato yield and phosphorus nutrition using humic substances in two soil textures

PlumX

Mensagem

[1] *Corresponding author: rogerio.soratto@unesp.br