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Fine root turnover (<2 mm) was determined from repeated measurements of root distribution up to 120 cm soil depth by core sampling in four month intervals. Sole cropped Sorghum bicolor and Acacia saligna were compared with the agroforestry combination in an alley cropping system in semiarid Northern Kenya. Three methods for the calculation of root production were used: the max-min, balancing-transfer...
The use of tree root characteristics as criteria in the selection of agroforestry tree species is hampered both by uncertainties in the definition of an ideal tree root system and by the scarcity of information which relates tree root properties to the effects of the trees on the soil and associated plant species. In the present study, carbon and nitrogen accumulation in roots (under 5 mm in diameter)...
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