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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
 

20. Rodent communities associated with three traditional agroecosystems in the San Luis potosi plateau, Mexico.

Agriculture, Ecosystems and Environment, 33, 1991, pp. 363-375

This paper analyzes the rodent richness and abundance of the farmed and unfarmed areas of three agroecosystems in the San Luis Potosi Plateau, Mexico.

Increases in weed cover are generally associated with increases in rodent richness. Farms with weedy vegetation between buildings were found to hold larger and more diverse rodent populations than clean farms.

The variation in the rodent communities of agroecosystems is due to the structural differences of the latter. Understanding the relationship between the characteristics of the agrohabitats and the rodent communities should be useful for developing new principles of environmental management which must be the basis of new methods of rodent pest regulation.

The following conclusions can be drawn from this study:

 

- The simple agroecosystems had fewer species than their unfarmed counterparts, in contrast with the most diverse agroecosystem where no impoverishment occured. Only the simple system with abundant resources was subject to a population outbreak. This supports the hypotheses of structural heterogeneity-diversity and diversity-stability. The adoption of diverse agroecosystems might help to reduce rodent pest outbreaks.

- There was no clear edge effect. The edge was richer only when it included the structurally diverse agroecosystem and the very contrasting unfarmed area. Otherwise, it could be different only in numbers, due to a particular habitat found in the edge, but not as a result of the farming operation.

- The croplands had distinct rodent faunas, but although they tended to be more similar to each other than their unfarmed counterparts. No exclusive "farmland species" could be defined.

- Changes in the rodent communities could only be explained by a combination of multiple factors whose changes were a result of the rainfall pattern.

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Plant protection

Review, book, Africa, Zimbabwe, survey, grain storage losses, strategies, traditional methods

KETERERE, M. and D. GIGA

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