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

By Meine van Noordwijk, Georg Cadisch, Chin K Ong

ISBN-10: 0851996736

ISBN-13: 9780851996738

This publication presents a synthesis of plant-soil-plant interactions from the plot to panorama scale. It makes a speciality of the method point, that is correct to many varieties of multispecies agroecosystems (agroforestry, intercropping and others). It additionally hyperlinks easy study to sensible 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 worldwide swap concerns. The contents comprise root structure and dynamics, plant-soil biota interactions, soil biodiversity and meals webs, water and nutrient biking, and the mandatory linkage to modelling techniques. to be had In Print

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Extra info for Below-ground interactions in tropical agroecosystems: concepts and models with multiple plant components

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If there are no sources of pathogens in the environment, P will be zero. 12 explain the production benefit associated with a multispecies system at a certain state (time and maturity). The relative net effects on resource availability (Ti) may change when the system grows to maturity. In a newly 11 established simultaneous agroforestry system, competition for light may be relatively low, resulting in a negative effect close to zero. However, the rooting system of the trees is still superficial, resulting in low (negative) net effects on water and nutrient availability.

However, they pointed out that traits that allow species to coexist when 15 exploiting and competing for limited resources do not automatically give rise to greater productivity or stability (because these interactions are also highly dependent on species composition). See Chapter 4 for more discussions of the importance of species diversity and ecosystem performance. Finally, our current understanding of how multispecies agroecosystems function should be integrated into the enormous wealth of local ecological knowledge known to exist (see Chapter 2, this volume).

The effects had on fertility are then assessed in terms of the extent to which yield in those areas improve in subsequent years. By applying different leaf litters separately, these farmers are able to assess their relative performance. In the mid-hills of Nepal, the most significant soil fertility management intervention undertaken by farmers is the use of animal manure, often mixed with crop residues and referred to as Gobar mal. Farmers are aware that animal manure is the main source of soil nutrients available to crops on the rainfed cultivated land (bari), whereas lower slope (khet) land benefits from the deposition of soil washed down from the upper slopes and is left fallow to regenerate its fertility.

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