WebThe following points highlight the top five factors affecting weed-crop competition. The factors are: 1. Period of Weed-Crop Competition 2. Weed and Crop Densities 3. Weed and Crop Species 4. Cropping Practices 5. Climatic Influences. Factor # 1. Period of Weed-Crop Competition: Farmers often assume that removing the weeds any time during the … WebIn light of these large dollar figures, it becomes clear that a greater understanding of crop—weed interactions is essential in order to develop cost-effective and sustainable …

Cropping system interaction - SlideShare

WebDec 4, 2015 · Seed yield of field pea was decreased by 50% when weeds were allowed to compete for the entire season. The critical period for weed control was 21-63 days in year 1 and 20-70 days in year 2 to ... WebJun 28, 2001 · The performance of a mechanistic simulation model of crop-weed competition was tested with data on the critical period of weed competition in sugarbeets and both seeded and transplanted tomatoes and suggested that the greater the weed density, the shorter the period of time that a crop could tolerate early-season … body beam

Crop-Weed Competition - an overview ScienceDirect Topics

Webnutrients, light, and possibly carbon dioxide exceed the available supply. Competition may develop between crop and weed plants and also between individual plants of each. The … WebCompetition for Light: Weeds compete with crops for light needed for photosynthesis by shading the young crop seedlings. A visit to the weedy fields of crops like groundnut, cotton, potato, and sugarcane at their seedling stages will easily convince anyone of this phenomenon. Most weeds put forth rapid initial growth, particularly during the ... WebSecond there is exploitation competition, which is indirect, and takes the form of competition for a wide variety of resources such as light, water and nutrients. There … cloning by hybridization