Vol. 14 No. 3
Estimation of water stress, growth, yield attributes and yield of summer baby corn (Zea mays L.) under different irrigation levels and mulching in Gangetic Bengal
Author(s): T. Manna, G. Saha, M. K. Nanda, A. Saha and D. Dutta
Abstract: A field experiment was conducted in the Instructional Farm, Jaguli, of Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia (Latitude: 22°56´ N, Longitude: 88°32´ E and Altitude: 9.75 m above mean sea level) to study the effect of irrigation levels and mulching on growth, yield attributes and yield of summer baby corn (Zea mays L.) var. G5414 F1 hybrid during 2016 and 2017. Three levels of irrigation (I1= IW: CPE 1.0, I2= IW: CPE 0.8 and I3= IW: CPE 0.6) as main plot and four levels of mulching (M0= control, M1= polythene mulch, M2= paddy straw mulch, M3= geotextile mulch) as sub plot treatments tested under split plot design with three replications. Results revealed that highest baby corn yield (1795 kg ha-1); green fodder yield (37 t ha-1) was obtained by application of irrigation at IW: CPE 1.0 combined with polythene mulch (I1×M1). Irrigation at IW: CPE 1.0 with polythene mulch increased plant height (cm), LAI, CGR, cob weight with and without husk (g) significantly. Canopy-air temperature differential (CATD) recorded highest under IW: CPE 0.6 and control plot (M0) depicting highest moisture stress condition. IW: CPE 0.6 with polythene mulch (I3×M1) had given maximum WUE (19 kg ha-1 mm-1) closely followed by IW: CPE 0.6 and geotextile mulch (I3×M3) (18 kg ha-1 mm-1) and lowest WUE (11 kg ha-1 mm-1) was recorded by IW: CPE 1.0 and without mulch (I1× M0).
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