Climate friendly cultivation of baby corn in Gangetic Bengal
Subhajoy Dey, Gopal Dutta, Ratul Chakraborty, Gautam Saha
A field experiment was conducted during pre kharif season, 2017 and 2018 to study the production potentiality of Baby corn in Gangetic Bengal region. Baby corn variety G-5414 was sown on D1 (7th February) and D2 (23rd February) of 2017 and 2018 under three spacing levels S1 (40×25 cm), S2 (30×20 cm), S3 (25×15 cm) and two nitrogen levels N1 (140 kg N/ha) and N2 (120 kg N/ha). All the treatments had crucial role to change the canopy architecture and geometry resulting change in micro environment in baby corn. Through the analysis of canopy ambient temperature differential (CATD) (℃) availability of water during the life span of the crop was measured. Profound effect of different spacing, nitrogen dose, date of sowing was also evident on different micro-climatic parameters like canopy temperature, PAR interception (%). Among the various plant spacing, 25×15 cm showed better response in case growth characteristics such as plant height, no of functional leaves plant-1, cob length, cob diameter and dehusked cob weight. But in case of no of cobs plant-1 and weight of husked cob, 40×25 cm spacing was superior compared to others. A decreasing trend was observed in case of husked, dehusked, and green fodder yield with widening of plant spacing. Maximum husked, dehusked, green fodder yield was recorded 44.5 t ha-1, 9.72 t ha-1 and 27.76 t ha-1 for 25×15 cm spacing whereas it was only 23.0 t ha-1 4.38 t ha-1 and 22.84 t ha-1 for 40×25 cm respectively. Nitrogen level 140 kg N/ha perform better for all yield attributing traits compared to 120 kg N/ha except for plant height. Yield of husked baby corn was maximum for 120 kg N/ha treatment (32.72 t ha-1) followed by 140 kg N/ha (31.86 t ha-1). In case of dehusked baby corn yield and green fodder yield both the nitrogen doses showed more or less same performance.In case of D2 crops shows greater values for all production components compared to D1 in both years. Plant shown on 23rd February (D2) recorded highest value for the yield of husked baby corn (38.05 t ha-1) and dehusked baby corn (7.59 t ha-1) followed by the plants of 1st date of sowing 26.53 t ha-1 and 5.87 t ha-1 respectively.