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International Journal of Agricultural Research
Year: 2007  |  Volume: 2  |  Issue: 8  |  Page No.: 731 - 735

Influence of Herbicides as Growth Regulators on Growth and Yield of Baby Corn (Zea mays L.)

N. Thavaprakaash, K. Velayudham and L. Gurusamy    

Abstract: Field experiments were conducted on sandy clay loam soils during late Rabi (January-March) and Kharif (June-September) seasons of 2002 to study the effect of herbicides at low concentrations as growth regulators on productivity of baby corn. The experiment was laid out in randomized complete block design with three herbicides each at two different concentrations (2,4-D @ 25 and 50 ppm, atrazine @ 50 and 100 ppm and glyphosate @ 5 and 10 ppm) along with control (water spray) and absolute control (no spray). The results were indicative that low herbicide concentrations promoted the growth and yield attributes in baby corn. Application of 2,4-D @ 50 ppm significantly increased growth parameters (plant height, number of green leaves plant-1, LAI and DMP) and yield attributes viz., length of cob and corn, weight of cob and corn, whereas significantly reduced cob-corn ratio, in comparison with 2,4-D @ 25 ppm and both concentrations of either atrazine or glyposate. Phenological stages such as days to tassel emergence and cob initiation and yield attributes viz., width of cob and corn, number of cobs plant-1, No. of cobs ha-1 were not significantly influenced by the herbicides. Increased growth parameters (LAI and DMP), yield attributes (length of cob and corn, weight of cob and corn) due to 2,4-D @ 50 ppm led to higher green cob yield (14.2% over control) and green fodder yield of baby corn over control.

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