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Weintraub, P.G., Department of Entomology, Gilat Research Center, Agricultural Research Organization, D.N. Negev 85280, Israel
Kleitman, S., Department of Entomology, Gilat Research Center, Agricultural Research Organization, D.N. Negev 85280, Israel
Mori, R., Department of Entomology, Gilat Research Center, Agricultural Research Organization, D.N. Negev 85280, Israel
Shapira, N., Research and Development, Sapir Center, D.N. Arava 86825, Israel
Palevsky, E., Department of Entomology, Agricultural Research Organization, P.O. Box 6, Bet Dagan 50250, Israel
The predatory mite Neoseiulus cucumeris (Oudemans) (Acarina: Phytoseiidae) successfully controlled the broad mite Polyphagotarsonemus latus (Banks) (Acarina: Tarsonemidae) on two varieties of greenhouse-grown sweet peppers (Capsicum annuum L.). A survey of pre-plant seedlings showed that nurseries were a source of infestation for the broad mite. The predatory mites Were released twice (on day 1 and 5, or 15 days later) on each plant, every second plant or every fourth plant. Broad mite populations were evaluated by sampling young leaves from the top of the plant. The effect of the broad mite on plant height, dry mass and yield was evaluated. Additionally, since N. cucumeris is known to control thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), blue sticky traps and flower sampling were used to evaluate changes in thrips populations. All three release rates of N. cucumeris significantly (P < 0.05) controlled broad mite populations, but when the predatory mites were released only on every fourth plant, the overall height and yield of the plants were adversely affected by broad mites. Releasing N. cucumeris on each or every second plant was as efficacious in controlling broad mites as sulfur treatments in terms of plant height, dry mass and yield. Plants treated with sulfur, however, had significantly higher thrips populations and fruit damage. © 2003 Elsevier Science (USA). All rights reserved.
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Control of the broad mite (Polyphagotarsonemus latus (Banks)) on organic greenhouse sweet peppers (Capsicum annuurn L.) with the predatory mite, Neoseiulus cucumeris (Oudemans)
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Weintraub, P.G., Department of Entomology, Gilat Research Center, Agricultural Research Organization, D.N. Negev 85280, Israel
Kleitman, S., Department of Entomology, Gilat Research Center, Agricultural Research Organization, D.N. Negev 85280, Israel
Mori, R., Department of Entomology, Gilat Research Center, Agricultural Research Organization, D.N. Negev 85280, Israel
Shapira, N., Research and Development, Sapir Center, D.N. Arava 86825, Israel
Palevsky, E., Department of Entomology, Agricultural Research Organization, P.O. Box 6, Bet Dagan 50250, Israel
Control of the broad mite (Polyphagotarsonemus latus (Banks)) on organic greenhouse sweet peppers (Capsicum annuurn L.) with the predatory mite, Neoseiulus cucumeris (Oudemans)
The predatory mite Neoseiulus cucumeris (Oudemans) (Acarina: Phytoseiidae) successfully controlled the broad mite Polyphagotarsonemus latus (Banks) (Acarina: Tarsonemidae) on two varieties of greenhouse-grown sweet peppers (Capsicum annuum L.). A survey of pre-plant seedlings showed that nurseries were a source of infestation for the broad mite. The predatory mites Were released twice (on day 1 and 5, or 15 days later) on each plant, every second plant or every fourth plant. Broad mite populations were evaluated by sampling young leaves from the top of the plant. The effect of the broad mite on plant height, dry mass and yield was evaluated. Additionally, since N. cucumeris is known to control thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), blue sticky traps and flower sampling were used to evaluate changes in thrips populations. All three release rates of N. cucumeris significantly (P < 0.05) controlled broad mite populations, but when the predatory mites were released only on every fourth plant, the overall height and yield of the plants were adversely affected by broad mites. Releasing N. cucumeris on each or every second plant was as efficacious in controlling broad mites as sulfur treatments in terms of plant height, dry mass and yield. Plants treated with sulfur, however, had significantly higher thrips populations and fruit damage. © 2003 Elsevier Science (USA). All rights reserved.
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