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首页> 外文期刊>Indian Journal of Weed Science >Crop-Weed Competition Studies in Tomato (Lycopersicon esculentuni) under Mid-Hills of North-West Himalayas
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Crop-Weed Competition Studies in Tomato (Lycopersicon esculentuni) under Mid-Hills of North-West Himalayas

机译：西北喜马拉雅山中部丘陵区番茄（Lycopersicon esculentuni）的作物杂草竞争研究

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The highest values of all yield attributes were recorded under the plots kept weed-free upto harvest and minimum in the plots which remained weedy upto harvest. Weed dry weight and weed competition index increased with the increase in the duration ofweedy period and decreased with the increase in duration of weed-free condition. Weed-free conditions beyoncl 45 days after transplanting could not bring significant improvement in fruit yield of tomato which indicated that the critical period of crop-weed competition was found to be first 45 days after transplanting. In North-West Himalayan region, tomato is one of the main cash crops grown during March to November as an off-season vegetable which is marketed in the plains to fetch higher prices owingto its great demand and scarcity in the market. Weeds pose serious problem in its successful cultivation. Conducive agro-climatic conditions prevailing in the region, wider spacing, frequent irrigation and liberal use of fertilizers and manure encourageluxuriant weed growth. Singh and Tripathi (1988) and Singh and Singh (1992) have reported reduction in tomato yield upto 70.5% due to weeds. The magnitude of loss in tomato yield due to weeds depends upon their density, type of weeds and duration of crop-weed competition. Removing weeds manually throughout the crop season may not be beneficial and economical. Information on the critical period of crop-weed competition is essential to optimize herbicide use as well as stage of manual/mechanical weeding.Information on critical period of crop-weed competition in tomato under the agro-climatic conditions of mid-hills of North-West Himalayas is meagre. Hence, the present study was undertaken to find out the critical period of crop-weed competition in tomato.
机译：在收获前保持无杂草的地块下记录所有产量属性的最大值，在收获前保持杂草的地块下记录最小值。杂草干重和杂草竞争指数随杂草持续时间的增加而增加，随无杂草持续时间的增加而降低。移栽后45天无杂草条件不能使番茄的果实产量显着提高，这表明作物杂草竞争的关键时期是移栽后第45天。在西北喜马拉雅山地区，西红柿是3月至11月间主要的经济作物之一，是一种淡季蔬菜，由于其需求旺盛和市场稀缺，在平原上可以买到更高的价格。杂草的成功栽培带来严重的问题。该地区普遍存在有利的农业气候条件，更宽的行距，频繁的灌溉以及肥料和肥料的大量使用鼓励了茂盛的杂草生长。 Singh和Tripathi（1988）以及Singh和Singh（1992）报告说，由于杂草，番茄产量降低了70.5％。杂草导致的番茄减产幅度取决于其密度，杂草类型和作物杂草竞争的持续时间。在整个作物季节手动清除杂草可能既无益又经济。有关作物杂草竞争关键时期的信息对于优化除草剂的使用以及人工/机械除草的阶段至关重要。北半球中山丘陵区农业气候条件下番茄作物杂草竞争的关键时期信息西喜马拉雅山是微薄的。因此，本研究旨在找出番茄作物杂草竞争的关键时期。

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