Author(s):

Garima Joshi, MS Pal and Aaradhana Chilwal

Abstract: Presently baby corn is gaining popularity among Indian farming communities mainly due to its short duration, high market rate, nutritive value and also its multiuse. Corn responds high to nutrients because of its fast growth. Therefore integrated nutrient management, efficiency of nutrient supply and economics of baby corn under INM for is of immense importance for higher profitability of corn production. The present study was thus carried out during Kharif season 2015 at the Instructional Dairy Farm (IDF), Nagla, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakhand to study physiological nutrient efficiency and economics of baby corn production under the effect of integrated nutrient management. The experimental design was Randomized Block Design with 11 treatments consisting of sole application of NPK fertilizer, sole application of Azotobacter and Azospirillum, and application of Azotobacter and Azospirillum along with NPK fertilizer. The highest physiological nitrogen efficiency was recorded at seed treatment with Azotobacter that remained non significant with 50% NPK and seed treatment with Azospirillum. Similarly, the highest physiological phosphorus efficiency was recorded at seed treatment with Azotobacter and remained non significant with seed treatment with Azospirillum and the highest physiological potassium efficiency was recorded at seed treatment with Azospirillum. Significantly highest gross return, net return and net profit per day were found at application of 100% NPK+Azot+Azos that remained significantly at par with 75% NPK+Azot+Azos. The treatments applied with 100% NPK+Azot+Azos gave 7.62 and 10.1% higher gross and net returns, respectively than alone application of 100% NPK. The treatments applied with 100% NPK+Azot+Azos gave 3.6% and 2.7% higher gross and net returns, respectively than application of 75% NPK+Azot+Azos. B:C ratio was found significantly higher at 75% NPK+Azot+Azos that remained non significant with 50% NPK+Azot+Azos and 100% NPK+Azot+Azos. The study thus revealed the profitability of combined application of chemical and biofertilizers for nutrient efficiency and economic cron production.

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