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Abstract

A field experiment was conducted at the Agroforestry Farm of Bangladesh Agricultural University, Mymensingh, during the period from December 2003 to April 2004 to find out the effect of planting density of soybean in association with Eucalyptus tree on its yield and yield contributing characters under the cropland agroforestry system. The experiment was carried out in a factorial Randomized Complete Block Design (RCBD) with four replications. The density of soybean was 60 plants/m 2, 50 plants/m2 and 40 plants/m2. Two factors i.e. tree (Eucalyptus) and planting density of soybean was involved in the experiment. In general Eucalyptus tree influenced plant height, no of seed pod-1, seed yield and total dry matter yield of soybean significantly; while no of pod plant-1, length of pod, weight of 1000 seed and harvest index were insignificant. Among the three plant densities of soybean, 50 plants/m2 gave best results in all the yield and yield contributing characters except no of pod plant-1 and harvest index compared to that of 40 plants/m2 and 60 plants/m2. Considering Eucalyptus- Soybean association 50 plants/m2 plant densities of soybean grown as undestroyed crop in association with Eucalyptus is best for higher yield of soybean.

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