Tài nguyên được gắn thẻ với: Organic
16 đề mục được tìm thấy (Hiển thị 1 - 10) Tiếp theo
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01-01-2010 This article is from ECHO Asia Note #4 Does rice straw have any value? Looking at the practices of most farmers, it seems not! The burning of rice straw is a common sight during the harvest period in many parts of Asia. Yet a number of farmers think otherwise. One of them is Isidro Prado from...
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- ไทย (th)
- English (en)
- မြန်မာ (my)
- ភាសាខ្មែរ (km)
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EOA Documentary English Subtitles
- Điều này cũng có sẵn trong:
- English (en)
- Kiswahili (sw)
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This is a college text book about organic chemistry.
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College text book of Organic Chemistry
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01-01-1998 In EDN 64-5 we reviewed a report from Lowell Fuglie of the Church World Service in Senegal on his successful project with Moringa oleifera. He has published another book with CTA (Technical Centre for Agricultural and Rural Cooperation ACP-EU) on natural crop protection in West Africa. Part one...
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19-06-1992 The U. S. Department of Agriculture is recommending that home gardeners use a cooking oil spray to control aphids, white flies and spider mites.Researchers claim that the oil spray is only about one-third as costly as commercial pesticides with equivalent effectiveness. Recipe for an oil and soap...
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19-10-1993 Iron sulfate can be used to control slugs. Recent laboratory trials in England support the notion that iron sulfate is rapidly absorbed and is highly toxic to slugs.
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19-02-1998 Kerosene Emulsifiable Concentrate is an insecticide (at times it acts as a fungicide) which has a very wide spectrum as far as dealing with various insects is concerned.
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19-07-1999 The diamondback caterpillar,Plutella xylostella, (larva of amoth) is a very serious pest of cabbage and other crops. When highly fertilized collard greens (B. oleracea, Acephala Group), a related vegetable, are planted completely around a field, moths lay their eggs on the collards rather than on...
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20-01-2002 The conventional view of the relationship between soil nutrients and crop productivity in the tropics is leading to both damaging agricultural policies and inefficient and damaging farm-level practices. There is no need to use the huge quantities of chemical fertilizers that are so often...