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Sen-sarma, P. K.
- Bionomics of Calopepla leayana Latr. (Coleoptera: Chrysomelidae), A Serious Defoliator of Gmelina arborea Roxb Plantations in India
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Indian Forester, Vol 116, No 1 (1990), Pagination: 71-82Abstract
Tbe bionomics of Calopepla leayana Latr. was studied in the laboratory. outdoor wire-meshed cages of insectary as well as well as in the field conditions. Adult beetles after returning from hibernation in the first week of May, lay their eggs on the first available trees of Gmelina arborea. The mating period is observed to be 71.25 ± 22.60 mts. Eggs are laid either on the undersurface of leaf or on the tender stems near the apex of twig in the form of an ootheca. One female is capable of laying as many as 18 oothecae, each producing from 32 to 65 eggs. An exceptionally larger ootheca may contain about 97 eggs. Life-history studies reveals that under normal abiotic conditions, the pests undergoes three generations annually and all the generations overlap considerably. The sex proportion between males and females during different generations was 45.66 ± 2.76% and 54.35 ± 2.75% respectively.
- Pest Management in Indian forestry
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Indian Forester, Vol 111, No 11 (1985), Pagination: 956-964Abstract
India has been loosing nearly 1.5 millions hectares of forest cover annually, which is a warning for increased desertification in the Indian subcontinent. Therefore, while there is a need to increase the acreage under forest cover, it is also necessary to manage intensively our forest resources for increased productivity by following various management practices, including protection from various biological agencies. Among the various such agencies, insects constitute an important single factor, which limit the forest productivity. Various methods were evolved for controlling the forest pests right from the very inception of forest Entomology branch. This paper discusses in details the pest management strategies followed so far and the role played by each method in controlling the forest pests. Future line of researches have been indicated laying greater emphasis of well coordinated integrated pest management through multi-disciplinary or trans-disciplinary approaches.- Insect Pests of Eucalyptus and their Control
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Indian Forester, Vol 109, No 12 (1983), Pagination: 864-881Abstract
no abstract- Laboratory Evaluation of some Insecticides against Third Instar Larvae of Selepa celtis Moore (Noctuidae: Lepidoptera)
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Indian Forester, Vol 108, No 7 (1982), Pagination: 481-486Abstract
>>Twenty-one insecticides were tested as contact poisons against the 3rd instar larvae of Selepa celtis infesting Morus alba. Monocrotophos, chlordimeform, quinalphos and anthio were more toxic than DDT, while ambithion. Dimetheate and endrin were less toxic than DDT. The rest of the 14 insecticides were in the follwing order of effectiveness : carbaryl > endosulfan > pyrethrum > gamma-BHC > dichlorvos > toxaphene > leptophos > malathion > klofos > fenitrothion > dieldrin > aldrin > eythion > DDT.- Application of Remote Sensing Technique in the Enumeration of Sandal Trees
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Indian Forester, Vol 104, No 2 (1978), Pagination: 123-132Abstract
The enumeration of sandal is presently being done by the conventional ground survey method which is time consuming and becomes difficult if sandal is located in not easily accessible areas like valley, hills etc. The feasibility of the application of Remote Sensing Technique for sandal enumeration was, therefore, studied. It has been found that aerial photography is feasible for a rapid but at the same time fairly accurate enumeration of the sandal trees in forest areaS.- Experimental Transmission of Spike Disease of Sandal, Santalum album by the Leaf-hopper, Nephotettix virescens (Distant) (Homoptera : Cicadellidae)
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Indian Forester, Vol 104, No 3 (1978), Pagination: 202-205Abstract
During the current entomolgical investigations on the spike disease of sandal, Nephotettix Virescens (Distant) was incriminated as an insect vector transmitting the spike disease of sandal in nature in some of the areas. Earlier two species of leaf-hoppers namely Coelidin indica Walker (=Jassus indicus Walker) and Moonia albimaculata Walker (Homoptera : Cicadellidae) were reported to have been incriminated as insect vectors of spike disease of sandal. Experimental transmission of spike disease of sandal through the insect vector, Nephotettix Virescens Distant (Homoptera : Cicadellidae) commonly known as "Rice Green leaf-hopper" is presented in this paper. At least sixty leaf-hoppers were required for disease transmission in the transmission cages. The insect transmission of disease was confirmed by biometrical ratios, stain test and retransmission by grafting.- Trinervitermes Biformis (Wasmann), a Mound Building Termite in South India
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Indian Forester, Vol 87, No 4 (1961), Pagination: 252-252Abstract
No abstract- Seasonal Incidence of Wood Destroying Subterranean Termites
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Indian Forester, Vol 88, No 2 (1962), Pagination: 139-141Abstract
Preliminary results of studies on the seasonal incidence of wood destroying subterranean termites carried out at Dehra Dun in the New Forest Insectary Garden of Forest Research Institute are given. The highest incidence of termites occurs from the middle of August to the end of September in Dehra Dun; The relation of rainfall with incidence of termites appears somewhat inverse.- Antitermite Characteristics of Insecticides I- Results of Field Experiments Using Commercial Sample of Shell Liquid of Anacardium Occidentale, Aldrin and Dieldrin
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Indian Forester, Vol 89, No 4 (1963), Pagination: 280-285Abstract
Comparative prophylactic antitermite efficacy of three insecticides, viz., commerical sample of cashew nut shell liquid, Aldrin and Dieldrin was tested for a period of four years. The result shows that both Aldrin and Dieldrin in 1 % and 2% concentration behave satisfactorily for prophylactic protection of timbers against subterranean wood-destroying termites. But highest preference should be given to Aldrin at 2% concentration. Commercial sample of cashew nut shell liquid gave only little protection in the first and second year.- Studies on the Natural Resistance of Timbers to Termite Attack. IV. Qualitative and Quantitative Estimations of Resistance of Sixteen Species of Indian Woods against Neotermes bosei Snyder (Isoptera: Kalotermitidae) Based on Laboratory Tests
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Indian Forester, Vol 91, No 11 (1965), Pagination: 805-813Abstract
no abstract- Studies on the Natural Resistance of Timbers to Termite Attack, V. Laboratory Evaluation of the Resistance of Three Species of Indian Wood to Microcerotermes beesoni Snyder (Termitidae : Amitermitinae)
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Indian Forester, Vol 94, No 9 (1968), Pagination: 694-704Abstract
Natural resistance of three species of Indian woods, namely, 'axle-wood', 'mahua' and 'teak', to Microcerotermes beesoni, a subterranean termite species, has been discussed. Techniques of sampling of wood, culturing of termites and testing of resistance of wood to termites have been given in detail. The heartwood of'mahua' and 'teak' may be classed as very resistant to termites while wood of 'axle-wood' is only moderately resistant to termites.- Important Current Problems of Forest Entomology in India
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Indian Forester, Vol 94, No 1 (1968), Pagination: 112-117Abstract
A review of important current problems of Forest Entomology in India has been given in this paper. The problems included are (1) Teak defoliators, (2) Ailanthus defoliators, (a) Sal heartwood borer, (4) Semul shoot borer, (5) Poplar stem and ischolar_main borer, (6) Deodar defoliator, (7) Insect damages to Eucalyptus and (8) Termite Resistance of wood. Their present position and possible control measures have been discussed.- Studies on the Natural Resistance of Timbers to Termite Attack. VI. Laboratory Evaluation of the Resistance of 'Mundani', 'Anjan' and 'Banati' to Microcerotermes beesoni Snyder (Insecta : Isoptera Amitermitinae)
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Indian Forester, Vol 96, No 1 (1970), Pagination: 75-84Abstract
Heartwood of 'mundani' (Actocarpus fraxinifolius Wight), anjan (Hardwickia binata Roxb.) and 'banati' (Lophopetalum wightianum Arn.) were tested in laoratory under controlled condition of temperature (28° + 1°C) and relative humidity (85-90% r.h.) using laboratory colonies of Microcerotermes beesoni Snyder which builds wood-carton nests in the North India. Each test colony comprised of ca 1000 workers which were measured volumetrically and tested for 60 days. The results show that the heartwood of 'anjan' and wood of 'banati' are very resistant to attack by termites (mean % weight-loss: outer heartwood 0.075 and inner heartwood 2.61 in case of 'anjan' and outer region 0.014 and inner region 0.68 in case of 'banati'). Heartwood of 'mundani, however, proved susceptible to termite attack (mean % weight-loss: outer heartwood 33.95, inner heartwood 54.33).- Biology, Ecology and Control of Ailanthus Defoliator Atteva fabriciella Swed. (Lepidoptera: Yponomeutidae) in Madhya Pradesh
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