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首页> 外文期刊>Indian Journal of Weed Science >Effect of pendimethalin, oxadiazon and metolachlor on weeds and onion (Allium cepa L.) nursery
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Effect of pendimethalin, oxadiazon and metolachlor on weeds and onion (Allium cepa L.) nursery

机译：二甲戊乐灵，草二唑和甲草胺对杂草和洋葱苗的影响

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In onion (Allium cepa L.) nursery, the problem of weeds is very serious due to its slow growth and poor canopy. Research information with respect to herbicidal control of weeds in onion nursery, particularly under agro-climatic condition of centralplain zone of Uttar Pradesh is scanty. The present investigation was undertaken to develop an effective chemical weed control schedule in onion nursery. A field experiment was conducted at Student's Instructional Farm of Chandra Shekhar Azad University of Agriculture & Technology, Kanpur during winter 1997, to develop effective chemical weed control schedule in onion nursery. Three herbicides viz., pendimethalin (0.50, 0.75 and 1.0 kg ha~(-1)), oxadiazon (0.25, 0.50 and 0.75 kg ha~(-1)) and metolachlor(1.0, 1.5 and 2.0 kg ha~(-1)) were compared with untreated check. All these treatments were replicated thrice in randomized block design. Soil of the experimental field was sandy loam in texture, deficient in nitrogen and medium in phosphorus and potassium. Kalyanpur-red round, an improved variety of onion, was used in this study. Fifty gram seeds per plot (2 m X 1 m) were broadcast and incorporated in the raised beds soil on October 23, 1997. Herbicides were applied on third day of sowing with a sprayvolume of 500 1 ha~(-1) through knapsack sprayer Uprooting of nursery was made
机译：在洋葱（Allium cepa L.）苗圃中，由于杂草生长缓慢且冠层较差，因此杂草问题非常严重。关于洋葱苗圃除草控制除草的研究信息，特别是在北方邦中部平原区的农业气候条件下。进行本研究以制定洋葱苗圃中有效的化学除草计划。 1997年冬季，在坎普尔的钱德拉·谢卡尔·阿扎德农业科技大学学生教学农场进行了田间试验，以开发洋葱苗圃中有效的化学除草方案。三种除草剂，二甲戊灵（0.50，0.75和1.0 kg ha〜（-1）），草二唑（0.25、0.50和0.75 kg ha〜（-1））和甲草胺（1.0、1.5和2.0 kg ha〜（-1） ））与未经处理的检查进行比较。所有这些处理均在随机区组设计中重复三次。试验场的土壤质地为沙壤土，氮和磷，钾中等。这项研究使用了改良的洋葱Kalyanpur红圆。每块地播散50克种子（2 m X 1 m），并于1997年10月23日掺入高床土壤中。播种的第三天，通过背负式喷雾器喷洒除草剂，喷洒量为500 1 ha〜（-1）。托儿所已连根拔起

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