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close this bookAbstracts on Sustainable Agriculture (GTZ; 1992; 423 pages)
Open this folder and view contentsAbstracts On Traditional Land-Use Systems
Open this folder and view contentsAbstracts on farming systems research and development
Open this folder and view contentsAbstracts on integrated systems
Open this folder and view contentsAbstracts on cropping system
Open this folder and view contentsAbstracts on agroecology
Open this folder and view contentsAbstracts on agrometeorology
Open this folder and view contentsAbstracts on agroforestry
Open this folder and view contentsAbstracts on homegardens
Open this folder and view contentsAbstracts on seed production
close this folderAbstracts on plant protection
View the documentAcknowledgements
View the document1. Designing integrated pest management for sustainable and productive futures.
View the document2. Biotechnology's bitter harvest: herbicide-tolerant crops and the threat to sustainable agriculture.
View the document3. Chemistry, agriculture and the environment.
View the document4. Mise au point de techniques appropriées de lir qui seront utilisés par les petits agriculteurs traditionnels d'Afrique tropicale.(developing appropriate ipm technology for the traditional small-scale farmer in tropical Africa).
View the document5. Biological control in developing countries: towards its wider application in sustainable pest management.
View the document6. Transforming plants as a means of crop protection against insects.
View the document7. Utilization of va-mycorrhiza as a factor in integrated plant protection.
View the document8. Activity of four plant leaf extracts against three fungal pathogens of rice.
View the document9. A useful approach to the biocontrol of cassava pathogens.
View the document10. Evaluation of the biological activity of flax as a trap crop against orobanche parasitism of vicia faba.
View the document11. Insect pest management.
View the document12. Economic contributions of pest management to agricultural development.
View the document13. The effects of intercropping and mixed varieties of predators and parasitoids of cassava whiteflies (hemiptera: aleyrodidae) in Colombia.
View the document14. Prospects for traditional and cultural practices in integrated pest management of some root crop diseases in rivers state, Nigeria.
View the document15. Studies on cowpea farming practices in nigeria, with emphasis on insect pest control.
View the document16. Effect of various fertilizers and rates on insect pest/pearl millet relationship in Senegal.
View the document17. Insect pests of intercrops and their potential to infest oil palm in an oil-palm-based agroforestry system in India.
View the document18. Using weather data to forecast insect pest outbreaks.
View the document19. Insect pest management and socio-economic circumstances of small-scale farmers for food crop production in western Kenya: a case study.
View the document20. Rodent communities associated with three traditional agroecosystems in the San Luis potosi plateau, Mexico.
View the document21. Grain storage losses in Zimbabwe.
View the document22. Controlling weeds without chemicals.
View the document23. Weed management in agroecosystems: ecological approaches.
View the document24. Manual on the prevention of post-harvest grain losses.
View the document25. Evaluation of efficient weed management systems in pigeonpea (cajanus cajan l.)
View the document26. Weed management in a low-input cropping system in the Peruvian Amazon region.
View the document27. Poblaciones, biomasa y banco de semillas de arvenses en cultivos de maiz zea mays l. Y frijol phaseolus vulgaris l. Efecto de m+todos de control y rotaciones. (Weed population, biomass, and seed bank in maize and bean crops. Effects of control methods and crop rotations).
View the document28. Effects of groundnut, cowpea and melon on weed control and yields of intercropped cassava and maize.
View the document29. Intercropping and weeding: effects on some natural enemies of African bollworm, heliothis armigera (hbn.) (lep., Noctuidae), in bean fields.
Open this folder and view contentsAbstracts on water management
Open this folder and view contentsAbstracts on soil fertility
Open this folder and view contentsAbstracts on erosion and desertification control
Open this folder and view contentsAbstracts on potential crops for marginal lands

23. Weed management in agroecosystems: ecological approaches.

CRC Press, USA, 1988, 354 pp. 15 pp. index

In this book nineteen authors explore many aspects of weed control without toxic herbicides. Altieri's usual comprehensive grasp notes not only impact of weeds, but also their uses and roles. Detailed description of weed physiology tied to ecological notations comes next.

Seed data: seed banks, viability, loss, sources, germination, density, timing are all tied to individually important seeds. How do weeds get here? What makes some so invasive? What kinds of environments trigger or spread them? What natural enemies do they have?

Genetics are the basis on how weeds adapt to their environment.

Allelopathy makes a strong impact; many weeds utilize this trait, but the trait may be turned against them, too. Techniques for this are discussed.

Consider environmental factors. What does water do, or light, or availability of nutrients? Then there are indirect effects of light, temperature, evaporating moisture, changes in nutrients, allelopathy interactions, changes in soil microorganisms.

Vegetation can be analyzed, so one can see that there is a set pattern of change in plants, and a choice of crops successions, rotations, harvesting equipment, drainage decisions, tilling times and depths.

Take a look at the farmer's point of view. Just how much damage comes from weeds? How can you lessen this? What techniques really work and where? Is there a way to get some good out of weeds?

What are the commercially available biological controls? Many are not yet on the market, or are still being studied. Insect response is another item; it is not always true that a diversified ecosystems has fewer pests. A pest may need 2 hosts, so a weed is not always to blame, nor the primary host. You may be thankful for some weeds that house natural enemies.

The last chapters concentrate on organic methods of weed control, special strategies for small scale farming and general guidelines.

This book is crowded with valuable hints.

This is a book one must have.

Abstract by Bargyla Reteaver.

1217 92 - 10/144

Plant protection

Review, book, post-harvest grain losses, GTZ

GWINNER, J. et al.

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