PRODUCTION AND YIELD OF ONION UNDER DIFFERENT WATER AND NUTRITION MANAGEMENTS

MASSARANDUBA, WENDEL DE MELO; GOMES FILHO, RAIMUNDO RODRIGUES; BRITO, MARCOS ERIC BARBOSA; CARVALHO, CLAYTON MOURA DE; ARAÚJO, RYCHARDSON ROCHA DE; OLIVEIRA, THIAGO HERBERT SANTOS

doi:10.1590/1983-21252022v35n216rc

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Research Paper • Rev. Caatinga 35 (02) • Apr-Jun 2022 • https://doi.org/10.1590/1983-21252022v35n216rc copy

PRODUCTION AND YIELD OF ONION UNDER DIFFERENT WATER AND NUTRITION MANAGEMENTS

PRODUÇÃO E RENDIMENTO DA CEBOLA SOB DIFERENTES MANEJOS HÍDRICO ENUTRICIONAL

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The objective of this study was to evaluate the effect of different irrigation depths applied by drip system and nitrogen fertilization levels that promote higher yield and water use efficiency in onion (Allium cepa L.). The treatments consisted of five irrigation depths (50; 75; 100; 125; 150% of crop evapotranspiration), applied by drip system, combined with five nitrogen fertilization rates (0, 40, 80, 120 and 160 kg ha⁻¹), in a 5 x 5 factorial scheme, in a randomized block experimental design, with four replicates. Irrigation depths estimated at 120.2% and 77.81% of crop evapotranspiration promoted higher yield and water use efficiency for total yield of onion bulbs, respectively. Nitrogen dose of 160 kg ha⁻¹ promoted maximum total yield and water use efficiency.

Keywords
Allium cepa L; Irrigation management; Ammonium sulfate; Crop evapotranspiration

pH	OM	K	P	ESP	V	Ca²⁺	Al³⁺	Mg²⁺	H + Al	SB	CEC	Na⁺
H₂O	g kg⁻¹	%			cmol_c dm⁻³
6.33	11.70	27.10	12.60	0.38	61.60	1.28	<0.08	0.93	1.43	2.29	3.72	0.014

Textural class			Particle size	Bulk density
	Sand	Silt	Clay
Loamy sand	81.4%	12.7%	5.9%	1.57 g cm⁻³

Sources of Variation	Degrees of Freedom	Sum of Squares
Sources of Variation	Degrees of Freedom	TBY (kg ha⁻¹)	WUE Total (kg ha⁻¹ mm⁻¹)
Block	3	319.6^ significant at 1% probability level by F test, CV: Coefficient of variation.	1198^ significant at 1% probability level by F test, CV: Coefficient of variation.
Depth	4	4234.2^ significant at 1% probability level by F test, CV: Coefficient of variation.	10522^ significant at 1% probability level by F test, CV: Coefficient of variation.
N dose	4	7437.1^ significant at 1% probability level by F test, CV: Coefficient of variation.	27427^ significant at 1% probability level by F test, CV: Coefficient of variation.
Depth x N dose	16	445.3^ns ns not significant	1467^ns ns not significant
Residual	72	1454.3	5681
Overall mean	-	39.44	74.97
CV (%)	-	11.39	11.85
Depth	(4)	4234.2^ significant at 1% probability level by F test, CV: Coefficient of variation.	10522^ significant at 1% probability level by F test, CV: Coefficient of variation.
Linear	1	2779.89^ significant at 1% probability level by F test, CV: Coefficient of variation.	6906.88^ significant at 1% probability level by F test, CV: Coefficient of variation.
Quadratic	1	1402.68^ significant at 1% probability level by F test, CV: Coefficient of variation.	3071.54^ significant at 1% probability level by F test, CV: Coefficient of variation.
Deviation	1	13048^ns ns not significant	10363^ns ns not significant
N dose	(4)	7437.1^ significant at 1% probability level by F test, CV: Coefficient of variation.	27427^ significant at 1% probability level by F test, CV: Coefficient of variation.
Linear	1	7365.70^ significant at 1% probability level by F test, CV: Coefficient of variation.	27129.12^ significant at 1% probability level by F test, CV: Coefficient of variation.
Quadratic	1	58.1765^ns ns not significant	233.28^ns ns not significant
Deviation	1	12.36^ns ns not significant	29.72^ns ns not significant

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