EFFECT OF MULCHING AND BORON APPLICATION ON GROWTH, PRODUCTIVITY AND WATER USE OF WINTER NIGER UNDER RED-LATERITIC BELT OF WEST BENGAL
Publication Date : 05/10/2015
A field experiment was conducted at Agriculture Farm, Visva-Bharati, West Bengal, India(23039/N latitude and 87042/E longitude and average altitude of 58.9m MSL) during winter (rabi) season of 2010-11 and 2011-12 to investigate the effect of mulching and boron on the growth, yield and water use of rainfed Niger [Guizotia abyssinica (L.f.) Cass]. The design of the experiment was Split-plot with three replications. Four levels of mulching (no mulching, soil dusting, straw mulching @ 2 t/ha and 7 t/ha) were alloted in the main plots and three levels of 0.2% borax spraying viz. control, at branching only, branching and flowering stages were allocated randomly in the sub-plots. The recommended dose of NPK was 50 kg kg/ha N, 25 kg/ha P2O5 and 25 kg/ha K2O respectively applied as basal. Results showed a significant influence of mulching and boron on growth, yield vis-a-vis water use of winter niger under purely rainfed situation. The highest plant height, dry matter accumulation, leaf area index, crop growth rate, seed yield and stick yield were documented with the application of straw mulching @ 7 t/ha as well as boron spraying @ 0.2% borax at branching and flowering stages. No mulched plots unable to conserve sufficient moisture to grow satisfactory crop and hence recorded the lowest results. Maximum consumptive use and minimum consumptive use efficiency were noticed under no mulching treatment whereas spraying of boron @ 0.2% borax at both the stages recorded higher water use and water use efficiency as comparison to other treatments. Key words: Mulching, Boron, Niger, growth, yield and water use.
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