Development of an integrated pest management programme for cotton. Part 2: Integration of a lucerne/cotton interplant system, food supplement sprays with biological and synthetic insecticides

2002 ◽  
Vol 48 (2) ◽  
pp. 95-105 ◽  
Author(s):  
R. K. Mensah
2020 ◽  
Vol 153 (1) ◽  
pp. 79-90
Author(s):  
John H. Borden ◽  
Eveline Stokkink

AbstractThree species of ambrosia beetles (Trypodendron lineatum (Olivier), Gnathotrichus sulcatus (LeConte), and G. retusus (LeConte) (Coleoptera: Curculionidae: Scolytinae)) have been estimated to cause annual losses of $95–$189 million in degrade of logs and lumber on the British Columbia coast, in Canada. A consultant-run semiochemical-based integrated pest management programme was implemented in 1982 against these beetles, following fulfilment of four prerequisites: (1) presence of receptive potential clients, (2) availability of semiochemical lures, (3) invention of an operational trap, and (4) proof of concept of mass trapping technology. The programme is based on two broad strategies: maintain the problem at a tolerable level and, if necessary, reduce the problem to a tolerable level. One measure of effectiveness over 12 years of mass trapping at a dryland sort near Sooke, on Vancouver Island, British Columbia, was 16.4 million beetles trapped and an estimated five to one benefit-to-cost ratio. Despite success, several factors have conspired to reduce the programme from 50 sites serviced in early years to 7 in 2018. Timber companies in British Columbia are currently showing renewed interest and are taking steps to incorporate the integrated pest management programme as a formal component of their overall operations.


Author(s):  
K. L. Naga ◽  
A. R. Naqvi ◽  
B. L. Naga ◽  
H. L. Deshwal ◽  
L. Jhumar

Aim: Some genotypes of mothbean were screened for their comparative preference against jassids, whiteflies and thrips. Materials and Methods: The experiment was laid out during Kharif season in Randomized Block Design with three Replications. Ten genotypes (viz., RMO-225, RMO-40, RMO-423, RMO-435, RMO-257, RMO-25, RMO-141, RMO-20-36, RMO-04-01-28 and RMO-28-80) were screened against major sucking insect pests which were replicated thrice. Observations: The observations were recorded after two weeks of sowing at weekly intervals after two weeks of sowing. The pest populations were recorded on five randomly selected and tagged plants per plot in early hours when insect have minimum activity. Results: The data revealed that none of the genotypes ware found free from sucking insect pest attack. On the basis of peak population, the genotypes RMO-25 and RMO-141 were categorized as least preferred to jassids, whiteflies and thrips, whereas, RMO-435, RMO-225 and RMO-04-01-28 as highly preferred to jassids and whiteflies and RMO-435, RMO-225 and RMO-257 as highly resistant to thrips. Conclusion: It is well known that certain genotypes of crops are less attacked by a specific insect-pest than others because of natural resistance. In the integrated pest management programme, growing of varieties (RMO-25 and RMO-141) with less preference to sucking insect-pests is one of the most important tools without additional cost.


Author(s):  
Christopher L Materu ◽  
Essau W. Losujaki

Tomato (Lycopersicum esculentum L.) is one of the important crop in East Africa as a source of food, income and export. Occurrence of different pest including indigenous and alien in tomato fields are considered as a major threat pests to tomato growers. Worldwide pest problems in horticultural investment need to be considered carefully as their presence increase cost of production. Despite of this information in Tanzania there has been little research to update pest list infesting our tomatoes. The study was conducted in Morogoro region in Kauzeni and Bigwa wards whereby farmers grow different varieties of tomatoes. Farmers spray different fungicides and pesticides twice per week to manage different pests. The selected fields were located at S 04˚47ʹ41.7ʹʹ, E 038˚13ʹ11.8ʹʹ and S 06˚53ʹ38.3ʹʹ, E 037˚36ʹ07.4ʹʹ Random sampling using “W” Pattern was used to get representation of the fields. Occurrence of pest population was estimated from ten plants during 2018/19, searching from young, middle and older leaves. Insect specimens were collected using fine forceps, aspirators, and preserved in ethanol 70% for laboratory identification. The results showed no aphids were detected from frequent sprayed tomato fields, other pests observed include the white flies with mean (57) individuals per plant, followed by leaf miner (70) and the highest number was thrips representing (107) Mean population comparison showed a significant differences P< 0.005. Understanding occurrence of different pests in tomato growing areas could assist in planning sustainable Integrated Pest Management programme in tomato growing areas.


Sign in / Sign up

Export Citation Format

Share Document