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Raturi, D. P.
- Growth, Biomass Production and Dry Matter Distribution Pattern of Eucalyptus Hybrid Grown in an Energy Plantation
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Indian Forester, Vol 117, No 3 (1991), Pagination: 187-192Abstract
The preeent Investigation waa undertaken to study the growth, biomass production, dry matter distributIon pattern and inter-relationship between the various yield contributes of biomass of Eucalyptus hybrid grown in an energy plantation, under rain-fed conditions In semi-acid zone. The age of plantation was three years. The growth of individual trees in the plantatIon was very heterogeneous. The tree height varied from 550 cm to 990 cm and girth at breast height varied from 5 cm to 35 cm. Although the larger trees, or category A trees, were much fewer in number than the medium size and smaller trees of category B and category C, their contribution to biomass yield was maximum. Further, the biomass of category A trees was superior even qualitatively since it contained higher percentage of bole-wood and utilizable biomass and less at non-utilizable biomass. The total blomsss yield was 44.78 oven-dry tonne per hectare. Bole and brenches constitute the major yield contributes of biomass.- Distribution of Organic Matter and Nutrient Content in a Eucalyptus Hybrid Plantation on Lateritic Soil in West Bengal
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Indian Forester, Vol 110, No 2 (1984), Pagination: 122-128Abstract
Distribution of organic matter and plant nutrients in a 10 yearS old Eucalyptus hybrid plantation raised on lateritic soil in Mauza Barihote, Hoomgarh Range, East Midoapore Forest Division, West Bengal have been discussed. It seems that Eucalyptus hybrid is well suited for this tract when growth with adequate manuring. From the growth rate of this species on average type of soil the crop at the end of the first rotation can be expected to yield about 90 tonnes of usable nood per ha which should increase with better inputs and experience in raising these plantations.- Biomass Production and Energy Conversion Efficiency by Eucalyptus in Energy Planlnations
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Indian Forester, Vol 110, No 2 (1984), Pagination: 150-170Abstract
Studies on growth, assimilation rate, biomass production, solar energy conversion efficiency and seasonal energy conversion efficiency by Eucalypts under energy plantation practices (short spacing, 13m × 13m) have been carried out at six monthly intervals for a period of 36 months under semi-arid non-irrigated conditions in Gujarat. The results show that there exists considerable variation among the population of the trees which increase with increasing age. The total biomass ranged from 5 dt/ha at 12 months to 66 5 dt/ha at 36 months,the utilizable biomass (wood, bark, branch) ranging from 2.25 dt/ha to 43 5 dt/ha for the same periods. There existed a direct correlation between, the leaf biomass and total biomass by different categories of trees. The results on various growth parameters, viz,net assimilation rate, relative growth fate and crop growth fate is also presented. The relationship between D2H and total as well as utilizable dry malter production by trees has been worked out and presented. The solar energy conversion efficiency as found to be maximal at 36 months of the age being 126. The seasonal energy conversion efficiency showed two peaks, one 18-24 ond another 30-36 month., the values being 1.77 and 3.16 per cent of PAR coinciding with lhe period of moisture availability. The high biomass production by trees under energy plantation practices as related to the CO2 profile and energy conversion efficiency is briefly discussed.- Biomass Production in Energy Plantations of Prosopis juliflora
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