Ram Mohan Mishra , Ganga Prasad , Rama Kant Mishra

Abstract

Ailanthus leaf roller Psorosticha zizyphi Stainton is a new record on Maharukh, a nutritious fodder tree. The moths appear each year in January and oviposit singly. Incubation period is 3-4 days, larval period ranges 14-16 days, pupal period is 6-8 days. Life cycle varies from 23-28 days. Foliar spray of 0.25% malathion and 0.005% Fenvelarate in April/May gave effective control of the pest. The fodder can be used for livestock after fifteen days of spraying.

Full Text

     

Pratap Singh , R. S. Bhandari , Massrat Fasih , Ganga Prasad , B. D. S. Tyagl , B. M. Mishra , R. K. Mishra

Abstract

Epidemic defoliation of deodar forests by Ectropis deodarae in Lolab Valley was reported in August, 1982. The population of the pest was monitored in early spring of 1983, by counting pupae on the ground per unit area, the ascending female moth stuck up on sticky bands applied to deodar trees and also larval population per twig. As the population was found to be on the increase and an epidemic was threatened a decision was taken to spray an organophosphorous compound fenitrothion from the air. Two Beaver aircrafts were used for the operation. The dispensing equipment used was boom and nozzle and the insecticide dosage was 1 litre per hectare Pre and Post-treatment counts of the pest population gave 92% kill. Non-target organisms hit by the spray were also monitored. There was no mortality of birds and other vertebrates. A good number of non-target insects including Calosoma beesoni, the predator beetle of Ectropis deodarae were also hit. The dosage can be safely reduced to 775 ml/hectare which will effectively kill tbe pest and cause less harm to predators.

Full Text

     

R. M. Misra , Ganga Prasad , Darshan Singh Rawat

Abstract

Two insecticides, a synthetie pyrethroid fenvalerate (Sumicidin) and a Carbamate (Sevin), were tested against larvae of Atteva fabriciella, the Ailanthus webworm, in Kaluwala Block, Mohand Range. It has been found that fenvalerate and carbamate (Sevin) show promise and provide good control of the pest in 0.01% and 0.02% concentrations.

Full Text

     

Pratap Singh , Ganga Prasad

Abstract

Poplar stem borer, Apriona cinerea is a serious pest of poplars in plantations in the North-west Himalaya and the adjoining plains region. Pest distribution and its host plants are given. All age groups of poplars are attacked. Attacked trees deteriorate in quality and break under wind pressure. Various stages of the borer i.e. adult, egg, larva and pupa, its biology and life history are described. Pruning of affected branches in September-October and fumigation with paradichlorobenzene or other fumigants successfully controls borer population. General purpose persistent insecticide, lindane, can be used for killing adults. Soil applications of Furadan (granular formulation) can protect nursery plants from the borer attack. Collateral hosts of the stem borer should be removed from the vicinity of poplar plantations. Clones best adapted to the ecological conditions of a site should be selected for raising plantations.

Full Text

     

Pratap Singh , Massrat Fasih , Ganga Prasad

Abstract

Exotic pines are being planted on a large scale in the country. With all exotics we face problems from indigerous and introduced pests. By and large except for pine adelgid which got inadvertently introduced into the country sometime back, the exotic pines have no insect pest problems. The other insects recorded from them are casual feeders only. Most of them belong to the order Lepidoptera with lesser numbers in Coleoptera, Hemiptera, Orthoptera, Hymenoptera and Isoptera. Majority of them are defoliators. All of them are potential pests. To check further spread of the pine adelgid no vegetative material should be transported from one region to another. With the passage of time indigenous insects will adapt themselves to their new hosts or insects from their native homes are likely to gain entry in their new homes. Therefore, continued surveillance is necessary for detection of new pest introductions and pest build-up. Relatively insect free conditions of pines today should not lull foresters to compiacency so that they neglect plans for alternate species or for control measures when pest build-up takes place.

Full Text

     

Pratap Singh , Ram Mohan Misra , Ganga Prasad

Abstract

Semul shoot borer is a serious pest of semul plantations. An effort was made to control the pest by using two granular insecticides viz furadan and sevidol. Post treatment evaluation after 48 hours showed that sevidol at 6g/plant (81.25% kill) was found more effective than furadan 6g/plant (52.98% kill) and 8g/plant (59.70% kill).

Full Text

     

P. N. Chatterjee , Pratap Singh , Ganga Prasad

Abstract

no abstract

Full Text