Studies on the effect of Entomopathogens and inert dust on storage insect pests and seed quality during storage under ambient condition
Research Type
AICRP Trials
Experiment Background
Pigeonpea
Pigeon pea (Cajanas cajan (L.) Millsp.) is a principle crop grown for its protein-enriched seed in the Indian sub continent. In India more than 150 insects have been reported on Pigeon pea crop. Podborer, Helicoverpa armigera (Hubner) and pod fly, Melanagromyza btusaMalloch (Agromyzidae: Diptera) are the major pests of pigeonpea. Pests of various species cause havoc on storage grains, resulting in both qualitative and quantitative grain losses. Insect pests feed stored grains and reduce the weight, nutritional content and germination of these grains.Major insect pests of stored grains include lesser grain borer (Rhyzopertha dominica), rice weevil (Sitophilusoryzae), Khapra beetle (Trogodermagranarium), rust red flour beetle (Triboliumcastaneum), long headed flour beetle (Latheticusoryzae), saw toothed beetle (Oryzaephilussurinamensis), rice moth (Corcyra cephalonica), almond moth (Cadracautella), Angoumois grain moth (Sitotrogacerealella), pulse beetles (Callosobruchuschinensis, C. maculates, C. analis). Insect-related losses have been estimated to be between 5 and 10%, with up to 30% in the tropics (Ahmad et al., 2021). Therefore, the present study will be proposed to find out the effectiveness of Entomopathogens and inert dust against major storage insect-pests damaging seeds and to study of the storability of treated seeds.
Sorghum
Sorghum crop is grown all over theworld and is a staple food and fodder crop in India.Among cereals, sorghum is the fourth mostimportant crop after rice, wheat and maize in India.The major sorghum growing areas are in the statesof Maharashtra, Andhra Pradesh, Karnataka,Gujarat, Tamil Nadu and Rajasthan. Near about150 insect species have been reported as pests on
sorghum, of which sorghum shoot fly (Atherigona soccata) and stem borers (Chilopartellus) are themajor pests worldwide. During storage, different species of insect pests such as Sitophilusgranarius (L.), Sitophilusoryzae (L.), Sitophiluszeamais (Motsch.), Rhyzopertha dominica (F.), Oryzaephilussurinamensis (L.), Trogodermagranarium (Ev.), Triboliumcastaneum (Herbst), Sitotrogacerealella (Oliv.) and Cryptolestesferrugineus (Stephens) were observed to cause serious damage to sorghum. The insect pests were reported to cause up to 13.12% weight loss of threshed sorghum and 8.34% weight loss to the unthreshed sorghum.
Experiment Group
Agricultural Entomology
Unit Type
(01)RESEARCH UNIT
Unit
(39)MEGA SEED PULSES AND CASTOR RESEARCH UNIT (NAVSARI)
Department
(292)Nodal officer (megaseed) & Unit Head (seed), Pulses and Castor Research Station
BudgetHead
(328/02704/55/0A)328/26/REG/00257
Objective
1. To evaluate the effect of Entomopathogens and inert dust against major storage insect-pests damaging seeds (For Pigeonpea- C. maculatus & Sorghum- R. dominica)
2. Study of the storability of treated seeds
Season
Annual
Location Unit Type
(01)RESEARCH UNIT
Location Unit
(39)MEGA SEED PULSES AND CASTOR RESEARCH UNIT (NAVSARI)
Location Department
(292)Nodal officer (megaseed) & Unit Head (seed), Pulses and Castor Research Station