Productivity and nutritional aspects in Moringa oleifera plants fertilized with NPK in south-eastern Brazil

IVAN DA COSTA ILHÉU  FONTAN; ENILSON DE BARROS  SILVA; BRUNO OLIVEIRA  LAFETÁ; WEMERSON MARCELO GONÇALVES  SILVA; SANDRA ANTUNES DO  NASCIMENTO; BENTO GIL  UANE

doi:10.56093/ijas.v94i8.147299

Authors

IVAN DA COSTA ILHÉU FONTAN Federal Institute of Minas Gerais, São João Evangelista-MG, Doce River Valley, South-Eastern Brazil
ENILSON DE BARROS SILVA Federal Institute of Minas Gerais, São João Evangelista-MG, Doce River Valley, South-Eastern Brazil
BRUNO OLIVEIRA LAFETÁ Federal Institute of Minas Gerais, São João Evangelista-MG, Doce River Valley, South-Eastern Brazil
WEMERSON MARCELO GONÇALVES SILVA Federal Institute of Minas Gerais, São João Evangelista-MG, Doce River Valley, South-Eastern Brazil
SANDRA ANTUNES DO NASCIMENTO Federal Institute of Minas Gerais, São João Evangelista-MG, Doce River Valley, South-Eastern Brazil
BENTO GIL UANE Federal Institute of Minas Gerais, São João Evangelista-MG, Doce River Valley, South-Eastern Brazil

https://doi.org/10.56093/ijas.v94i8.147299

Keywords:

Moringa, Nitrogen, Phosphorus, Potassium, Productivity

Abstract

Moringa oleifera is an Asian tree species cultivated for its nutritional and medicinal properties. Present study was carried out during 2021 and 2022 at Federal Institute of Minas Gerais, São João Evangelista-MG, Doce River Valley, South-Eastern Brazil to determine NPK doses for Moringa and critical NPK levels in the shoot. The experimental design was a fractional factorial of the type (1/2)4³, with 32 treatments set up in four blocks. The treatments represented combinations of doses of N (0, 40, 80, 160 kg/ha); P₂O₅(0, 45, 90, 180 kg/ha); and K₂O (0, 20, 40, 80 kg/ha). Each experimental unit was composed of four seedlings arranged in a row. Plant shoot harvests were carried out every 60 days (January, March, May, July, September and November) for two consecutive years. The data were analyzed using regression analysis, and the adjusted response surface model was: Y = b0 + b1 N + b2 N² + b3 P + b4 P² + b5 K + b6 K²+ b7 NP + b8 NK + b9 PK. The productivity of fresh and dry matter of the shoot of M. oleifera plants was influenced only by N doses in the first year of cultivation, when the supply of 88.7 and 85.8 kg/ha of N led to the maximum estimated productivity for fresh (10,360.3 kg/ha) and dry matter (2,84.0 kg/ha). The critical contents in the shoot were 3.23 dag/kg (N), 0.41 dag/kg (P), and 2.18 dag/kg (K), while the annual extraction by plants was 78.44 kg/ ha (N), 8.99 kg/ha (P), and 48.81 kg/ha (K).

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