资源 标记: Weed Control
37 条目已找到 (正在显示 31 - 37) 前一个
-
Weeds are important biotic constraint to food production. Weeds compete with crops for the same resources, basically water, nutrients, light and carbon dioxide. Furthermore, they are alternate hosts for crop pests and pathogens. Moreover, some of them lack autotrophy and fully develop only by...
-
Abstract,Outlook on Agriculture. 2017 In order to determine the critical period of weed control in sesame, field studies were conducted during the 2014 and 2015 growing seasons in Estahban, Iran. The experiments were conducted based on factorial arrangement which involved a randomized complete...
-
Access Agriculture Training Video Compost is more powerful than manure. What is less known is that the micro-organisms in compost attack striga seeds in the soil. Compost also decreases the amount of striga that will sprout, and reduces its negative effect on cereal crops. Let us look at how...
- 这也有其他语言版本:
- Français (fr)
- English (en)
- Português (pt)
-
Access Agriculture Training Video It is important to pull striga weeds with your hands before the time it produces seeds and spreads. As it is laborious, better reduce the number of striga plants by applying compost or manure, and by rotating or intercropping with non-cereal crops, such as...
- 这也有其他语言版本:
- English (en)
- Français (fr)
- Português (pt)
-
Access Agriculture Training Video One of the major parasites is striga, a weed that sucks the juice and nutrients from cereal crops such as millet, sorghum and maize and causes great yield losses. A single striga plant can produce hundreds of thousands of seeds. The seeds are so tiny that most...
- 这也有其他语言版本:
- Français (fr)
- English (en)
- Português (pt)
-
2018-11-13 Mistletoes (parasitic shrubs from diverse families), dodders (species of Cuscuta); and witchweeds and their relatives, Striga, Alectra, and Rhamphicarpa species are major constraints on African crops especially in grain and legume production. They are highly specialized weeds so understanding...
-
关键资源 1991-01-19 "Published in co-operation with the Technical Centre for Agricultural and Rural Co-operation" - T.p. verso. Weed Control describes the basic biology of weeds and the characteristics of weed species. The methods of control – manual, animal-powered and engine-drive, cultural and chemical control –...