Below-ground interactions in tropical agroecosystems: by Meine van Noordwijk, Georg Cadisch, Chin K Ong

By Meine van Noordwijk, Georg Cadisch, Chin K Ong

This ebook offers a synthesis of plant-soil-plant interactions from the plot to panorama scale. It specializes in the method point, that is correct to many sorts of multispecies agroecosystems (agroforestry, intercropping and others). It additionally hyperlinks easy examine to useful software (and indigenous wisdom) in quite a lot of platforms without or with timber, and considers implications of below-ground interactions for the surroundings and international swap matters. The contents contain root structure and dynamics, plant-soil biota interactions, soil biodiversity and foodstuff webs, water and nutrient biking, and the mandatory linkage to modelling methods. on hand In Print

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G. high-density planting and allowing secondary forest to regenerate around the rubber trees instead of clean weeding (Dove, 2000). , 2000). Various terms are encountered in the literature referring to this dichotomy – ‘formal’ vs. ‘informal’, ‘western’ vs. ‘indigenous’ and ‘outsider’ vs. ‘insider’. However, the problem with this sort of frame of analysis is that, in most cases, the knowledge of local people is not some pristine indigenous perception of the world. It is more likely to have been interacting with external knowledge, at least to some extent, for the last 500 years or so (Agrawal, 1995).

4 Soil ‘coolness’ and fertility Farmers also relate soil temperature to fertility. As discussed above, ‘coolness’ and ‘moisture content’ are often conflated by farmers when describing soil.

The greater the availability of other limiting resources in the environment of the multispecies system, the greater the relative importance of a resource in the overall interaction. K. Ong et al. and phosphorus is most probably negative, whereas for nitrogen it is most probably positive. Consequently, in a (sub-)humid climate on nitrogen-deficient soils, the overall effect of alley cropping will most probably be positive, because of the positive nitrogen effect and the negative net effects on other resources (Fig.

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