Soil test and targeted yield based primary nutrient management of marigold (Tagetus patula) in an Inceptisol

M LAKSHMI DURGA; D V S RAJU; R N PANDEY; KANWAR PAL SINGH; PRABHAT KUMAR; RENU PANDEY; S GOPALAKRISHNAN; SURESH CHANDRA

doi:10.56093/ijas.v87i4.69418

Authors

M LAKSHMI DURGA ICAR-Indian Agricultural Research Institute, New Delhi 110 012
D V S RAJU ICAR-Indian Agricultural Research Institute, New Delhi 110 012
R N PANDEY ICAR-Indian Agricultural Research Institute, New Delhi 110 012
KANWAR PAL SINGH ICAR-Indian Agricultural Research Institute, New Delhi 110 012
PRABHAT KUMAR ICAR-Indian Agricultural Research Institute, New Delhi 110 012
RENU PANDEY ICAR-Indian Agricultural Research Institute, New Delhi 110 012
S GOPALAKRISHNAN ICAR-Indian Agricultural Research Institute, New Delhi 110 012
SURESH CHANDRA ICAR-Indian Agricultural Research Institute, New Delhi 110 012

https://doi.org/10.56093/ijas.v87i4.69418

Keywords:

Crop response, Fertilizer adjustment equations, Marigold, Nutrient prescription, Soil test

Abstract

Field experiments was conducted on marigold (Tagetus patula L.) var. Pusa Arpita during 2014-16 using Ramamoorthy's inductive methodology for the quantification of soil test and crop requirement based integrated fertilizer prescription of primary nutrients for targeted yield of marigold at ICAR-Indian Agricultural Research Institute, New Delhi. The results of the experiment indicated that 0.46 kg N, 0.07 kg P and 0.49 kg K were required to produce one quintal of marigold flowers in Inceptisols of New Delhi. The contributions (%) from soil, fertilizer nutrients and FYM were found to be 46.33, 45.53 and 21.60 for N; 59.62, 20.42 and 8.87 for P and 47.22, 85.71 and 6.11 for K, respectively. The fertilizer prescription equations were developed and nomograms were formulated based on the equations for a range of soil test values and desired yield targets of marigold. Under NPK + 10 tonnes/ha FYM, 9.3, 10.17, and 3.09 kg/ha of fertilizer N, P₂O₅ and K₂O could be saved for attaining targeted yield of 30 tonnes/ha as compared to NPK fertilizer alone at a given soil test values of 100, 4 and 100 kg of N, P₂O₅ and K₂O, respectively.

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