Productivity of Soybean under Biofuel tree based Agroforestry system
KrishiKosh
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Title |
Productivity of Soybean under Biofuel tree based Agroforestry system
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Creator |
VISHWANATH, B R
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Contributor |
NAGARAJAIAH, C
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Subject |
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Description |
The experiment was laid out in Randomized complete block design with eight treatments replicated thrice comprising of seven biofuel (oil seed bearing) tree species planted during 2008 at a spacing of 10 m between the plants with nine trees in each plot. Trees include Simarouba glauca, Melia dubia, Azadirachta indica, Melia azadirach, Pongamia pinnata, Madhuca latifolia and Calophyllum inophyllum. In the interspaces of trees, soybean was sown. The observation was made at two directions i.e., towards north and south of tree row and at two distances 0 – 2.5 m and 2.5 – 5 m from the base of each tree. These were compared with sole soybean. Sole crop soybean recorded significantly higher grain yield (1752 kg ha-1). The yield of soybean under agroforestry systems as compared to sole crop varied significantly by 10.0, 12.0, 12.9, 20.3, 26.2, 29.2 and 42.4 per cent in Madhuca, Calophyllum, Pongamia, Simarouba, Melia azadirach, Azadirachta indica and Melia dubia. Lower yield of soybean under agroforestry systems was attributed to significant reduction in growth and development of the soybean plants due to shading effect of trees. Soil fertility was significantly better in association with trees compared to open field. Soil organic carbon (0.60 per cent), available nitrogen (331.68 kg ha-1), available phosphorous (23.50 kg ha-1) and available potassium (304.67 kg ha-1) was significantly higher under agroforestry system. Among different biofuel tree based agroforestry systems, Madhuca, Calophyllum and Pongamia based agroforestry systems yielded high net returns (Rs. 52,115.00, Rs. 50,225.00 and Rs. 44,915.00 ha-1) with benefit to cost ratio of 2.66, 2.60 and 2.43 respectively. |
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Date |
2016-11-02T09:28:00Z
2016-11-02T09:28:00Z 2013-09-12 |
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Type |
Thesis
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Identifier |
Th-10648
http://krishikosh.egranth.ac.in/handle/1/83227 |
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Language |
en
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Format |
application/pdf
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Publisher |
University of Agricultural Sciences GKVK, Bangalore
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