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Dimri, B. M.
- Moisture Distribution Pattern in the Soil under Different Tree Plantations
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Indian Forester, Vol 127, No 4 (2001), Pagination: 443-449Abstract
Soil moisture distribution pattern in the soil profiles under Chir, Teak, Shisham, Eucalyptus, Khair plantations, natural Sal and barren land was studied. It is observed that maximum moisture was retained by the soil under Shisham followed by natural Sal, Khair, Chir, Eucalyptus, Teak and the least was under barren land. As far as months are concerned maximum moisture was observed in August followed by September, July, October, November, January, March, February, December, April, June and the least moisture was in May. It has been found that during January, February, July and August moisture content decreased with increasing soil depth while in remaining months moisture content increase with increasing soil depth.
- Soil Potassium Changes at Different Altitudes and Seasons in Upper Yamuna Forests of Garhwal Himalayas
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Indian Forester, Vol 132, No 5 (2006), Pagination: 609-614Abstract
A study was conducted in Yamuna Forest Division of Garhwal Himalayas to determine the potassium status in the soils of different altitudes and seasons, and establish their correlation. The results showed general decrease in potassium down the soil profile with respect to altitude and seasons but increased with higher altitude. The seasonal effect showed higher values in autumn than spring. Total and available potassium showed highly significant positive correlation at all the altitudes and seasons and significant negative correlation with soil depth. In general, the soils at different altitudes are well supplied with potassium.- Soil Moisture Accretion with Progressive Rainfall Under Tectona Grandis (Teak) and Eucalyptus Plantations
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Indian Forester, Vol 125, No 4 (1999), Pagination: 392-400Abstract
Gradual accretion of soil moisture in different depths with the progression of rainfall under Tectona grandis and Eucalyptus plantation at Langha range of Mussoorie Forest Division was studied. When cumulative rainfall rises upto 148.4 mm, water percolates only upto 75 cm depth under both plantation. At CRF 815.2 mm entire profile gets charged and no further increase in soil moisture was observed at 1421.1 m CRF, especially under Tectona grandis. The moisture accretion, in general, was higher in the soils supporting Eucalyptus in comparison to those under Teak plantation and, in particular in the lower depths at and above CRF of 815.2 mm. It was observed that during dry months soil moisture has positive relationship with depth.- Soil Organic Matter Status Under Different Social Forestry Plantations
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Indian Forester, Vol 125, No 9 (1999), Pagination: 883-890Abstract
A study was conducted in Langha Forest Range of Mussoorie Forest Division under 15 years old plantations of Pinus roxburghii, Tectona grandis, Dalbergia sissoo, Eucalyptus, Acacia catechu along with natural Shorea robusta forest and barren land to find out the status of soil organic matter. This study was conducted before and after monsoon to investigate the changes in SOM due to change of seasons. Before monsoon it was observed that SOM content was higher under natural Shorea robusta followed by Dalbergia sissoo, Eucalyptus, Tectona grandis, Acacia catechu and Pinus roxburghii plantations and least under barren land and after monsoon it was higher under Eucalyptus only in top (0-10 cm) layer but over all higher under the soils of natural Shorea robusta followed by Eucalyptus, Dalbergia sissoo, Pinus roxburghii, Acacia catechu, Tectona grandis and least under barren land. In general SOM was observed higher in post-monsoon in comparison to pre- monsoon period.- Soil Nutrient Changes Under Different Ages Eucalyptus Monocultures
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Indian Forester, Vol 122, No 1 (1996), Pagination: 55-60Abstract
Soil nutrient changes were studied under 5, 10, 15 and 20 years old Eucalyptus monocultures, in comparison to natural sal forest. Soil nutrient depletion under 10 and 15 years old monocultures were higher than 5 and 20 years old monocultures, in comparison to natural sal. Soil profile distribution of attribtttes showed gain in clay content and available P and loss in total K and P in all monocultures as compared to natural sal. The soil under 5 year and 20 year monocultures were less depleted because of faster mineralisation of residual organic matter in 5 years old monoculture and a gradation of soil nutrients as the monoculture aged as in 20 years old monoculture.- Relation of Age and Dominance of Tree Species with Soil Chemical Attributes in Kalimpong and Kurseong Divisions of West Bengal
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