EFFECT OF NATURAL ENEMIES ON THE COTTON BOLLWORM, HELIOTHIS-ARMIGERA HUBNER (LEPIDOPTERA, NOCTUIDAE) IN WESTERN TANZANIA

被引：13

作者：

NYAMBO, BT

机构：

[1] Agricultural Research Institute Ukiriguru, Mwanza, SW7 5BD

[2] ICIPE, Mbita Paent Field Station, P.O. Box 30, Mbita

来源：

TROPICAL PEST MANAGEMENT | 1990年 / 36卷 / 01期

关键词：

Heliothis armigera; Natural enemies; Western Tanzania;

D O I：

10.1080/09670879009371432

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The cotton bollworm, Heliothis armigera Hübner, is the most important insect pest of cotton in Western Tanzania and attacks a wide range of food crops grown in the cotton areas including wild host plants. A study to investigate the role of natural enemies in regulating the larvae populations of the pest in the mixed cropping system typical of Western Tanzania was done. The populations and larvae mortality factors were assessed on maize, sorghum, cotton, chickpea, tomato and Cleome sp. Diseases (viral and bacterial) and parasitism were identified as important mortality factors of the larvae populations but neither prevented the pest population from causing economic damage on the crops. Of the viral diseases, a nuclear polyhedrosis virus (NPV) was the most frequent particularly on larvae collected from Cleome and maize. The abundance and distribution of the mortality factors were found to vary between seasons and host plants and it was therefore concluded that more research is needed before H. armigera natural enemies can be exploited for a biocontrol programme in Western Tanzania. © 1990 Taylor and Francis Ltd.

引用

页码：50 / 58

页数：9

共 33 条

[1] Beeden P., Ecology and Pest Status of Heliothis Armigera (Hübner) (Lepidoptera, Insecta) in the Northern States of Nigeria., (1976)
[2] Bhatnagar V.S., Cropping entomology report work 1979-80, ICRISAT, (1980)
[3] Bhatnagar V.S., Davies J.C., Cropping systems entomology, ICRISAT Annual Report 1975-76, (1976)
[4] Bhatnagar V.S., Davies J.C., Cropping systems entomology, ICRISAT Annual Report 1976-77, (1977)
[5] Bhatnagar V.S., Davies J.C., Cropping entomology report of work 1977-78, ICRISAT, pp. 2-5, (1978)
[6] Bilapate G.G., Investigations on Heliothis armigera (Hubner) in Marathwada—XXIII. Key mortality factors on cotton, pigeon pea and chickpea, Proceedings of the Indian National Science Academy, 47, pp. 637-646, (1981)
[7] Bowden J., Migration of pests in the tropics, Mededeling-En Van De Faculteit Landbouwwetenschappen Rijksuniversiteit Gent, 38, pp. 785-796, (1973)
[8] Brown E.S., Swaine G., New evidence on the migration of moths of the African armyworm, Spodoptera exempts, (Wlk.) (Lepidoptera, Noctuidae), Bulletin of Entomological Research, 56, pp. 671-684, (1966)
[9] Cadou J., Soubrier G., Use of a nuclear polyhedrosis in the control of Heliothis armigera (Hb) (Lep: Noct.) in cotton plantations in Chad, Cotton Et Fibre Tropicales, 29, pp. 357-365, (1974)
[10] Callahan P.S., Techniques for rearing the corn ear-worm, Heliothis Zea. Journal of Economic Entomology, 55, pp. 453-457, (1962)

← 1 2 3 4 →