Accumulation and exportation of macronutrients by peanut crops under pulse irrigation with brackish water

Cruz, Ruana I. F.; Silva, Gerônimo F. da; Silva, Carla S. da; Silva, Manassés M. da; Menezes, Sirleide M. de; Silva, Samuel; Chaves, Lúcia H. G.; Cruz, Flávio J. R.; Santos Júnior, José A.; Rolim, Mário M.; Araújo, Edmaíris R.

doi:10.1590/1807-1929/agriambi.v28n10e284591

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Original Article • Rev. bras. eng. agríc. ambient. 28 (10) • Oct 2024 • https://doi.org/10.1590/1807-1929/agriambi.v28n10e284591 linkcopy

Accumulation and exportation of macronutrients by peanut crops under pulse irrigation with brackish water¹

Acúmulo e exportação de macronutrientes pelo amendoim irrigado por pulsos e água salobra

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

High salinity levels trigger harmful effects on plant mineral nutrition, causing production losses. The objective of this study was to evaluate effects of using pulse or continuous drip irrigation with brackish water on the accumulation and exportation of nutrients in peanut (Arachis hypogaea) crops. A randomized block experimental design with four replications was used, in a 6×2 factorial arrangement consisting of six levels of electrical conductivity of irrigation water (ECw: 0.2, 1.6, 2.8, 4.0, 5.2, and 6.4 dS m^-1) and two irrigation regimes (pulse and continuous). Accumulation and exportation of macronutrients, sodium, and chloride were quantified at 63 days after sowing. Pulse irrigation mitigated the harmful effects of high salinity levels on peanut crops and promoted greater nutrient accumulation by plants compared to continuous irrigation. The descending order of nutrient accumulation by plants under pulse and continuous irrigation was: K > N > Ca > Mg > P > S. Pulse irrigation is effective in mitigating the detrimental effects of using brackish water on peanut crops.

Key words:
Arachis hypogaea; salinity; nutritional disorder; water management; nutritional management

HIGHLIGHTS:

Nutrient accumulation and exportation by peanut crops decrease under high salinity levels.

High salinity levels increase Na⁺ and Cl^- accumulation in peanut leaves.

Pulse irrigation mitigates the harmful effects of nutritional disorders caused by saline water.

pH	P	Ca⁺²	Mg⁺²	Na⁺	K⁺	Al⁺³	H⁺+Al⁺³	SB	CEC	CECe	Cu	Fe	Mn	Zn	BS	OM
H₂O	(mg dm^-3)	(cmol_c dm^-3)									(mg dm^-3)				(%)	(g kg^-1)
6.5	5.03	1.75	0.55	0.08	0.07	0	0.69	2.45	3.14	2.45	0.1	4	4.1	1.3	78.03	5.53

Source of variation	DF	Mean squares
		Macronutrients						Elements
		N	P	K	Ca	Mg	S	Cl	Na
Regime (R)	1	3.888**	0.032**	6.429**	0.032**	0.070**	0.010**	26.29×10⁵ **	10.087**
Salinity (S)	5	1.414**	0.020**	1.079**	0.020**	0.016**	0.004**	4.13×10⁵ **	3.218**
R × S	5	0.010^ns	0.002**	0.009^ns	0.002**	5×10^-4 ^ns	6×10^-6 ^ns	2.82×10⁴ ^ns	0.447**
Block	3	0.027^ns	7×10^-4 ^ns	0.310**	19.783*	0.003^ns	0.001**	5.23×10⁵ *	0.166^ns
Residue	33	0.022	4×10^-4	0.060	4×10^-4	0.001	2×10^-4	21899	0.098
CV (%)		8.26	10.27	12.21	0.75	11.10	10.34	14.55	20.76

Source of variation	DF	Mean squares
		Macronutrients						Elements
		N	P	K	Ca	Mg	S	Cl	Na
Regime (R)	1	0.470**	0.002**	1.674**	2×10^-4**	0.005**	0.006**	42,061.001**	0.091**
Salinity (S)	5	0.238**	0.002**	0.425**	5×10^-5*	5×10^-4*	3×10^-4^ns	11,866.20**	0.016**
R × S	5	0.006^ns	0.001^ns	0.096**	2×10^-6^ns	6×10^-5^ns	4×10^-6^ns	11,76.272^ns	0.097^ns
Block	3	0.003^ns	0.001^ns	0.0316**	9×10^-6^ns	3×10^-6^ns	0.001^ns	7,680.093*	0.010^ns
Residue	33	0.010	8x10^-5	0.008	1×10^-5	2×10^-5	1x10^-4	951.889	0.001
CV (%)		14.120	18.43	11.37	30.57	24.75	29.55	30.62	22.97

Source of variation	DF	Mean squares
Source of variation	DF	Shoot dry weight	Kernel dry weight
Regime (R)	1	1153.07**	176.03**
Salinity (S)	5	1094.47**	87.25**
R × S	5	6.09^ns	0.15^ns
Block	3	53.68*	1.30^ns
Residue	33	13.59	1.33
CV (%)		6.34	9.33

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Unidade Acadêmica de Engenharia Agrícola Unidade Acadêmica de Engenharia Agrícola, UFCG, Av. Aprígio Veloso 882, Bodocongó, Bloco CM, 1º andar, CEP 58429-140, Tel. +55 83 2101 1056 - Campina Grande - PB - Brazil
E-mail: revistagriambi@gmail.com

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[TFN1] SB - Sum of bases; CEC - Cation exchange capacity; CECe - Effective cation exchange capacity; BS - Base saturation; OM - Organic matter

Accumulation and exportation of macronutrients by peanut crops under pulse irrigation with brackish water1

Acúmulo e exportação de macronutrientes pelo amendoim irrigado por pulsos e água salobra

ABSTRACT

HIGHLIGHTS:

Accumulation and exportation of macronutrients by peanut crops under pulse irrigation with brackish water¹