Author(s):

VP Patel, GJ Patel and CK Desai

Abstract:
A field experiment was conducted to study the response of source and method of nitrogen application on Rabi baby corn (Zea mays L.) under drip system during 2015-16 at Tribal Research cum Training Centre, Anand Agricultural University, Devgadhbaria, Dist.- Dahod. Eight treatment combinations comprising of two method of application {(M₁:- drip nitrogen fertigation and M₂:- Traditional base application (soil application)} and four nitrogen sources (F₁:- Urea, F₂:- Urea Phosphate, F₃:- Calcium Nitrate and F₄: Ammonium Sulphate) were tried under split plot design with four replications. Treatment drip nitrogen fertigation recorded significantly highest growth components viz, plant height at 30 DAS and first picking, number of leaves at first picking, dry matter accumulation at 30 DAS and first picking, crop growth rate 0-30 DAS and 30-58 DAS and maximum value of yield components viz., length of husked and dehusked baby corn, girth of dehusked baby corn, weight of husked and dehusked baby corn per plant, husked and dehusked baby corn yield, green fodder yield and stalk yield of baby corn. Treatment F₄ (Ammonium sulphate) recorded significantly higher growth components viz., plant height at 30 DAS and first picking, number of leaves at first picking, dry matter accumulation at 30 DAS and first picking, crop growth rate 0-30 DAS and 30-58 DAS and maximum value of yield components viz., length of husked and dehusked baby corn, girth of dehusked baby corn, weight of husked and dehusked baby corn per plant, husked and dehusked baby corn yield, green fodder yield and stalk yield of baby corn. The treatment drip nitrogen fertigation of ammonium sulphate gave significantly higher length of husked and dehusked baby corn. The treatment drip nitrogen fertigation of ammonium sulphate recorded 42.59 per cent and 42.56 per cent significantly the husked and dehusked baby corn yield, respectively as compared to traditional application of calcium nitrate. The drip nitrogen fertigation of ammonium sulphate gave maximum value of gross realization and net realization as compared to other treatment. Drip nitrogen fertigation of ammonium sulphate and drip nitrogen fertigation of urea gave maximum value of BCR as compared other treatment.

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