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首页> 外文期刊>Indian Journal of Weed Science >Effect of weed and nutrient management on weed growth and productivity of maize (Zea mays L.)
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Effect of weed and nutrient management on weed growth and productivity of maize (Zea mays L.)

机译：杂草和养分管理对玉米杂草生长和生产力的影响

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Field investigations were carried out during kharif 1997 and 1998 at Udaipur (Rajasthan) to evaluate the effect of weed and nutrient management on weed control and productivity of maize. The experiment consisted of six weed management treatments inmain plot and five nutrient management treatments in sub-plot which were replicated four times in split plot design. Results of the experiment revealed that atrazine at 0.5 kg ha~(-1) as pre-emergence+intercultivatton at 35 DAS significantly reduced thetotal weed density and weed dry weight over all weed control treatments except intercultivation at 20 and 35 DAS. This treatment also gave maximum valuse of crop dry matter accumulation, number of cobs plant~(-1), grain weight cob~(-1), test weight and grain yield of maize. The mean weed control efficiency of this treatment was recorded 80.55 percent with 92.84 percent increase in maize grain yield compared to weedy check. Amongst different nutrient management treatments FYM involving treatments increased the density of most dominating monocot weed Echinochloa colonum and total weed density as compared to all other treatments. Similar trend was also recorded in respect of dry weight of weeds. Application of 150 percent recommended dose of fertilizer gave the highest values for growth and yield parameters as well as grain yield of maize closely followed by 125 percent recommended dose. Application of 100 percent recommended dose of fertilizer+FYM 10 t ha~(-1) also resulted in significant increase in grain yield of maize over 100 percent recommended fertilizer levels during either years of research.
机译：在1997年和1998年的哈里夫（khadrif）（拉贾斯坦邦）进行了田野调查，以评估杂草和养分管理对玉米杂草控制和生产力的影响。试验包括在主样区进行六种杂草处理，在子样区进行五种养分处理，在分样设计中重复四次。实验结果表明，除在20和35 DAS下进行除草外，除所有杂草控制处理外，在35 DAS时出芽前+间作在0.5 kg ha〜（-1）时的at去津显着降低了杂草的总密度和杂草干重。该处理还最大程度地利用了农作物干物质积累，玉米芯植株数（-1），玉米粒芯（-1）重量，玉米自重和籽粒产量。与杂草检查相比，该处理的平均杂草控制效率为80.55％，玉米籽粒产量提高了92.84％。与所有其他处理方法相比，在不同的养分管理处理方法中，涉及处理的FYM增加了最主要的单子叶杂草E草密度和总杂草密度。在杂草干重方面也记录了类似的趋势。施用150％建议剂量的肥料可获得最高的生长和产量参数值，以及玉米的谷物产量，紧随其后的是125％建议剂量。在这两个研究年度中，施用100％建议剂量的肥料+ FYM 10 t ha〜（-1）也会导致玉米的谷物产量显着提高，超过100％建议肥料的水平。

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