Abstract
A field experiment was conducted during kharif 2010 and 2011 at Instructional farm of Rajasthan College of Agriculture Udaipur, Rajasthan, India to study the effect of crop spacing (45 × 20, 60 × 15 and 90 × 10 cm), nitrogen levels (60, 90 and 120 kg ha-1) and plant growth regulators (control, N-acetyl Aspartate (NAA) at 40 ppm and mepiquat chloride at 200 ppm) on yield attributes, yield and economics of baby corn. The crop spacing 60 × 15 cm significantly influenced yield attributes. Maximum green cob yield, baby corn yield and green fodder yield was recorded at 60 × 15 cm spacing which was higher (14.0, 24.3 and 8.8%, respectively) over 90 × 10 cm. Increasing nitrogen levels up to 90 kg ha-1 markably improved the yield attributes, yields and net returns. Application of 90 and 120 kg N ha-1 exhibited significant increase in green cob yield over 60 kg N ha-1. The results revealed that application of nitrogen up to 90 kg ha-1 level significantly increased green cob yield and baby corn yield in tune of 20.5 and 23.6% as compared to 60 kg N ha-1. The mepiquat chloride at 200 ppm exhibited highest yield parameters viz. cob length, cob girth, cob weight, corn length, corn girth, corn weight and cobs plant-1 . The crop sprayed with mepiquat chloride produced highest green cob yield (5903 kg ha-1), baby corn yield (2083 kg ha-1) and this was comparable with application of NAA. In case of green fodder yield, NAA at 40 ppm produced significantly highest green fodder yield (26.9 t ha-1) over mepiquat chloride at 200 ppm (22.1 t ha-1). Key words: Spacing, nitrogen levels, plant growth regulator, baby corn.
Highlights
Baby corn is dehusked maize ear, harvested young especially when the silk have either not emerged or just emerged and no fertilization has taken place or we can say the shank with unpollinated silk is baby corn
A field experiment was conducted during kharif 2010 and 2011 at Instructional farm of Rajasthan College of Agriculture Udaipur, Rajasthan, India to study the effect of crop spacing (45 × 20, 60 × 15 and 90 × 10 cm), nitrogen levels (60, 90 and 120 kg ha-1) and plant growth regulators (control, N-acetyl Aspartate (NAA) at 40 ppm and mepiquat chloride at 200 ppm) on yield attributes, yield and economics of baby corn
The results revealed that application of nitrogen up to 90 kg ha-1 level significantly increased green cob yield and baby corn yield in tune of 20.5 and 23.6% as compared to 60 kg N ha-1
Summary
Baby corn is dehusked maize ear, harvested young especially when the silk have either not emerged or just emerged and no fertilization has taken place or we can say the shank with unpollinated silk is baby corn. Baby corn is an important crop of Thailand and Taiwan and in India; recently, baby corn has gained popularity as valuable vegetable in Delhi, Uttar Pradesh, Haryana, Maharashtra, Karnataka, Andhra Pradesh, Rajasthan and Meghalaya States of India. M ha area with the production and productivity of 21.3 m t and 2507 kg ha-1, respectively (Government of India, 2011). Rajasthan State was first in respect of area, where in this crop occupies 10.5 lakh ha area (12.9%) with production of 19.5 lakh tones and productivity of 18.6 q ha-1 (Government of Rajasthan, 2010)
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