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Krishnaswamy, V. S.
- Storage of Forest Fodder against Seasons of Scarcity
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Indian Forester, Vol 68, No 3 (1942), Pagination: 123-129Abstract
No abstract- The Eighth All-India Silvicultural Conference
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Indian Forester, Vol 78, No 2 (1952), Pagination: 57-67Abstract
No abstract- General Formulae for Measurement of Heights of Trees
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Indian Forester, Vol 78, No 7 (1952), Pagination: 339-347Abstract
No abstract- Recommendations of the Ad Hoc Committee Appointed by the Government of India, on the Immobilization of Rajputana Desert
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M. D. Chaturvcdi
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C. R. Ranganathan
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R. N. Singh
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C. M. Chowdhuri
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B. Pal
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J. Bancrji
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D. D. Saigal
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V. S. Krishnaswamy
,
G. S. Lamba
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Indian Forester, Vol 78, No 8 (1952), Pagination: 414-416Abstract
No abstract- Rajputana Desert - Its Vegetation and Its Soil
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Indian Forester, Vol 78, No 12 (1952), Pagination: 595-601Abstract
No abstract- Protection of Forests of India from Animals
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Indian Forester, Vol 79, No 8 (1953), Pagination: 415-419Abstract
Some animals cause mechanical damage, some by browsing, some by stripping the barks of trees, some by destroying seeds, seedlings and ischolar_mains, while some cause damage by grazing. Elephants, rhinoceros, bison and' pigs cause mechanical damage to the forests. The first two by damaging the fences erected in forests, facilitate the entrance of other animals into the protected area. Bison also does a similar damage, but pigs cause considerable harm by upischolar_maining seedlings, coppice shoots and seedlings. Trenches have been dug in the forest for affording protection against elephants and pigs. In some places stone walls have also been erected for protection against the latter. Fences and crude country bombs have also been tried against the pigs. Elephants, bisons, sambur and black bears are guilty of stripping the barks of trees. Elephants have a partiality for the bark of the Artocarpus integrifolia, while bison strip the bark of Acrocarpus fraxinifolius. Sambur peels off the bark of Chukrasia in addition. Black bears, strip the bark of many deodar, spruce and kail poles to lick the rising sap and the cambium layer. Elephants, bison, sambur, nilgai and members of the deer family, goats and sheep are guilty of browsing many forest species. While there is no direct remedy against damage by elephants and bisons, the other soft skinned game are kept out by game proof fencing. Live hedges are also tried. As camels, goats and sheep are domestic animals the remedy is to prohibit them from entering the forest. Hares and rats cause considerable destruction of seeds and seedlings and ischolar_mains. Their damage can be minimized either by using poisoned baits or by cyanogassing them or by using wire nets. Grazing probably does more injury to the forest than even fire. The damage done by semi-wild cattle is kept down by capturing and selling them. In some places kheddah operations are also conducted to capture them. To minimize the damage done to the forest by the ordinary grazing cattle is rather difficult as it is closely bound with socio-political considerations. So long as regulation of grazing cannot be enforced, damage from excessive grazing by the domestic cattle cannot be minimized. The damage caused to the forests of India by animals are varied. Some animals cause mechanical damage, some by browsing some by stripping the barks of trees; some by destroying seeds, seedlings and ischolar_mains; while some cause damage by grazing. The nature and extent of damage caused by these animals and the measure taken to counter these, are described in this paper.- An Investigation into Thinning Cycles for Young Chir (Pinus longifolia) at New Forest, Dehra Dun
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Indian Forester, Vol 79, No 8 (1953), Pagination: 422-431Abstract
The description and results of a thinning cycle investigation that has been in progress since 1936 in young chir crops at Dehra Dun are given. The thinning cycles under trial are 4, 8 and 12 years, the intensity in all cases being, 'D' grade of ordinary thinnings. The shortest thinning cycle has given maximum diameter increment and largest number of trees in the top diameter classes. Its performance is comparable to that of the 8 years cycle from the view-point of basal area and volume production, while the 12 years cycle has given distinctly poorer results. The treatments have had no influence on height growth and the length of clean bole. The 4 year thinning cycle, therefore, gives maximum diameter increment as well as total volum, without impairing the quality of the timber. The thinning periodicity may be increased to 8 years without adversely affecting total volume production. The investigation also indicates that thinning intensities lighter than the ordinary 'D' grade should be avoided for high quality young chir crops.- Thinning Research in India
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Indian Forester, Vol 79, No 11 (1953), Pagination: 581-589Abstract
No abstract- A Method to Indicate the Percentage of Land which should be under Forest
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Indian Forester, Vol 78, No 11 (1952), Pagination: 537-539Abstract
No abstract- Forest Development of Andhra State
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Indian Forester, Vol 80, No 2 (1954), Pagination: 67-71Abstract
No abstract- Phenological Behaviour of a few Forest Species at New Forest, Dehra Dun
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Indian Forester, Vol 80, No 4 (1954), Pagination: 187-206Abstract
No abstract- Results of an Experiment to Study the Succession of Ground Flora Species under Forest Plantations Raised on Old Agricultural Land in the New Forest, Dehra Dun, India
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Indian Forester, Vol 80, No 9 (1954), Pagination: 522-530Abstract
No abstract- Results of an Experiment to Study the Succession of Ground Flora Species under Forest Plantations Raised on Old Agricultural Land in the New Forest, Dehra Dun, India
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Indian Forester, Vol 80, No 10 (1954), Pagination: 631-648Abstract
Small ground flora quadrats, one each, were laid in plantations of Gmelina arborea, Tectona grandis, Shorea robusta, Pinus longifolia and Dalbergia latifolia at the New Forest and frequencies of almost all the ground vegetation have been recorded over a period of 1928-1949 (in some cases). These data have been examined and an effort has been made to correlate the frequencies of various species with the growth and development of tree species. Although, some correlation seems evident the data, have unfortunately, not been collected clearly enough to bring out exa.ct correlations. These data serve as a guide to lay properly further plots in the area.- The Life of Stumps of some Forest Species under Moist and Dry Conditions
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Indian Forester, Vol 81, No 7 (1955), Pagination: 408-410Abstract
With a view to determining the duration of life of stumps (ischolar_main and shoot cuttings) and the circumstances under which their life could be prolonged, certain experiments were carried out in the demonstration area of the Forest Research Institute, with some forest species. According to these experiments, the stumps of Syzygium cumini, Codrota toona, Datbergia sisoo and Bischofia javanica may be stored for over 3 weeks after they are prepared if they are kept moistened with water. If stored dry they remain good for 3 to 4 days only.- Cover and Nurse Crops in Sal (Shorea robusta) and Teak (Tectona grandis) Plantations at Dehra Dun
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Indian Forester, Vol 82, No 4 (1956), Pagination: 153-170Abstract
This bulletin describes a series of investigations done at the Forest Research Institute, Dehra Dun, on the growing of cover and nurse crops in sal (Shorea robusta) and teak (Tectona grandis) plantations. The investigtions were started to see whether the formation and establishment of sal and teak plantations on exhausted agricultural fields which constituted the estate when it was taken over could be improved and hastened by nurse and cover crops. The experiments lasted from 1927 to 1940. The general conclusions reached are:- 1. None of the species tried prove really efficient as nurse and cover crops for sal at Dehra Dun and it is doubtful whether any are worthwhile - with the possible exception of Leucaena glauca; 2. The following species were successfully raised with sal - Leucaena glauca,Tephrosia candida, Indigofera endecaphylla, Indigofera galegoides and Indigofera tinctoria but none proved successful with teak; 3. The only species that appeared to have any beneficial effect on the growth of sal was Leucaena glauco and even this was doubtful; 4. All species needed intensive weeding to get them established (and their introduction is therefore expensive); 5. Leucaena glauco, Tephrosia candida and Indigofera endecaphylla were all partly successful as weed suppressers, the first named being the most effective, but Leucaena glauco and Tephrosia candida had to be repeatedly cut back in order to prevent them from suppressing the sal in the first few years. But in the case of teak, the growth from stumps, overtopped the nurse crop, Leucaena glauco, very soon. Due to this, the growth of the latter became very irregular and thus was not able to keep down the weeds and grasses; 6. after being partly damaged by frost for the first few years Leucaena glauca, Indigofera endecaphylla and Indigofera galegoides were reasonably efficient as forest nurses for sal; 7.Tephrosia candida was too short-lived and Indigofera endecaphylla too small a plant to be really useful with sal at Dehra Dun. Tephrosia candida raised simultaneously with teak was definitely harmful to the latter; 8. Leucaena glauca can be pruned at almost any height and at any time of the year without adverse results; 9. Tephrosia candida should not be pruned in the later years of its comparatively short life as this merely accelerates its death. It should be pruned early in the year because of its susceptibility to frost damage; 10. Indigofera endecaphylla can be heavily thinned in its third and fourth years without adverse effects; 11. Indigofera galegoides should be pruned early in the year to avoid damage to the new shoots by frost; 12. Indigofera tinctoria apparently will not stand pruning at Dehra Dun; 13. that moisture content in soils from areas with Tephrosia candida as a cover crop in Teak plantations is more reduced than in soils from areas without Tephrosia candida; 14. organic carbon and organic nitrogen are increased in areas with Tephrosia candida used as cover crop with both sal and teak and pH is reduced but not significantly as compared to those in areas without Tephrosia candida; 15. The nitrogen contents seems to be increasing with time on afforestation; 16. nitrogen and nitrogen as nitrates definitely decrease with the increase of the depth of the soil from ground level; 17. Tephrosia candida should be sown 4 to 6 weeks before the break of the monsoon. This early sowing results in slightly better survival per cent and an increase in mean height growth of 95% in the first growing season as compared with sowings made at the break of the rains. Detailed daily meteorological observations were recorded throughout the period of the experiments.- Bamboos - their Silviculture and Management
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Indian Forester, Vol 82, No 6 (1956), Pagination: 308-313Abstract
No abstract- Regeneration of Dry Fuel Forests of Madras State
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Indian Forester, Vol 83, No 1 (1957), Pagination: 3-11Abstract
No abstract- Forest Influences
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Indian Forester, Vol 83, No 7 (1957), Pagination: 416-450Abstract
A study of soil temperatures and humidity was started in the Demonstration area of New Forest, F.R.I. in May I953 with a view to studying the differences in temperatures and humidity due to afforestation as compared to those in open. The interim results drawn from the data collected so far are given under "Conc1usion" at the end.- Pinch of Salt for Chemical Conservation of Moisture
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