文章基本信息

标题：The Effect of Annual Weed Density and Nitrogen Fertilization on the Yield of Maize (.Zea mays var. Bakti-I)
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作者：Sayed Mohamed Zain S. Hasan ; Mohd Sadni Miro
期刊名称：Pertanika Journal of Social Sciences & Humanities
印刷版ISSN：0128-7702
电子版ISSN：2231-8534
出版年度：1984
卷号：7
期号：1
出版社：Universiti Putra Malaysia
摘要：A field experiment was conducted to study the effects o f different weed density and nitrogen fertilization on yield o f maize /'Zea mays var. Bakti-I), using a 3 x 4 factorial experiment in a randomized complete block design (RCBD) with three replications. A high weed density (338, 980 plants per ha) suppressed maize growth. On an average, the number, length and weight o f cobs, and the height o f maize were significantly reduced by weed competition, when 200 g weed seeds (169,490 weeds) per ha was used. Nitrogen fertilization significantly increased the number, length and weight o f cobs, grain dry weight and height o f the maize crop, and dry weight o f weeds.It is suggested that nitrogen fertilization at about 112 kg N/ha with adequate control o f weed density would give the highest satisfactory yield o f maize.
关键词：Weed Density; Nitrogen Fertilization; Zea mays var. Bakti-I; competition.