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Chaudhari, D. C.
- Supplementing Resin Production by Retapping Healed up Channels
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Indian Forester, Vol 122, No 8 (1996), Pagination: 746-750Abstract
The results of experiments in the retapping by Rill method of the healed up channels in Chir pine already tapped by Cup and lip method, carried out at New Forest, Dehra Dun have revealed that the resin yield was 4.45 kg/blaze which is viabJe from economic point of view. Therefore, the resin production may be supplemented by retapping healed up channels of abandoned pine trees if such trees are available in pine growing states.- Correlation between Diameter and Resin Yield by Rill Method of Tapping
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Indian Forester, Vol 118, No 7 (1992), Pagination: 456-459Abstract
Resin yield increases as the diameter increases upto 45 cm and then it decreases. Based on the model, optimum diameter of trees where yield will be maximum is observed to be 45 cm. This model will be used for forecasting the resin yield from the trees having diameter between 35-55 cm.- Boosting Resin Production with 20% (Volumetric) Acid Mixture Stimulant from Chir Pine (Pinus roxburghii Sargent)
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Indian Forester, Vol 117, No 1 (1991), Pagination: 37-43Abstract
In the personal study a method od preparing 20% acid mixture on volume/volume has been proposed to achive higher resin yeild from pines. In accordance with the proposed method it has been compared to prevalent one. i.e. method based on weight/weight and it has been found that proposed menthod consistently superior method based on weight/weight in all the months under study as well as overall months together.- In-vitro Antimicrobial Activity of Essential Oil of Newly Evolved Eucalyptus Hybrid FRI-5
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Indian Forester, Vol 115, No 4 (1989), Pagination: 264-267Abstract
The essential oil obtained from the leaves of newly evolved Eucalyptus hybrid FRI-5 as such and at varied dilutions viz., 1: 100, 1 : 250, 1 : 500 and 1 : 1000 bas been tested for its antimicrobial activity in-vitro against eight bacteria viz., Bacillus mycoides, B. pumilus, Escherichia coli, Proteus vulgaris, Salmonella paratyphii, Sarcina lutea, Shigella nigesta, Staphylococcus aureus and six fungi viz., Aspergillus niger, Candida albicans, Epidermophyton rubrum, Malbranchea pulchella, microsporum, gypseum, Penicillium notatum. The present investigations indicate that the Eucalyptus hybrid FRI-5 essential oil has potent antifungal as well as antibacterial efficacy being maximum when it is undiluted. The activity decreases as the dilution increase. Even at dilution of 1 : 1000) tbe oil bas been found active against all the test organisms.- In Vitro Antimicrobial Activity of Essential Oil of Newly Evolved Eucalyptus Hybrid FRI-4
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Indian Forester, Vol 114, No 1 (1988), Pagination: 35-38Abstract
The essential oil of newly evolved Eucalyptus/I> hybrid FRI-4 at various dilutions has been tested for its antimicrobial activity against various organisms. The pure oil has been found to be most active against all the test organisms. Even at dilution of 1 : 1000, the oil has been found to be active against all the test organisms exceptEpidermophyton floccosum.It is therefore, recommended for pharmaceutical preparations.- Comparative Studies on the Healing Rant of Blazes Tapped by 'Cup Lip' Method (Channels) and 'Rill method' (Rills) in Pinus roxrurghii
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Indian Forester, Vol 114, No 8 (1988), Pagination: 446-452Abstract
Pines have been commercially tapped for resin by "Cup&Lip method" from the beginning of this century. Recently it has been noticed that considerable damage to the growth and the timber of the pine trees is caused by resin tapping. To solve this problem a new method of tapping called "Rill method" was suggested/evolved by Dr. V.P.S. Verma the then Officer-in-Charge, M.F.P. Branch during the last decade. Studies were undertaken at F.R.I., Dehra Dun to compare the healing rate of blazes tapped by Cup&Lip method and "Rill method" in Pinus roxburghii. The studies revealed that while the rate of healing of blazes made by Rill method ranged from 19.2 to 51.3 cm2 per year in the case of Cup & Lip method it was from 4.8 to 12.2 cm2 per year.- Studies on Harvesting, Processing and Utilization of Calamus tenuis Roxb. (Cane) Grown at Dehra Dun
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