DAMAGE TO COWPEA BY THE LEGUME POD BORER, MARUCA-TESTULALIS GEYER, AS INFLUENCED BY INFESTATION DENSITY IN NIGERIA

被引：6

作者：

OGUNWOLU, EO

机构：

[1] Department of Crop Production, University of Agriculture, Makurdi

来源：

TROPICAL PEST MANAGEMENT | 1990年 / 36卷 / 02期

关键词：

Cowpea; Damage; Economic threshold; Legume pod borer;

D O I：

10.1080/09670879009371457

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

In experiments at Makurdi, Nigeria, to quantify the damage to cowpea by different densities of the legume pod borer (LPB), Maruca testulalis cypermethrin 10 EC was sprayed at 0.2 kg/ha a.i. to control larvae when its infestation in flowers reached 10, 20, 30, 40 and 50% in 1985 and 10, 20 and 30% in 1986. Larval damage to the flowers and pods increased with the percentage infestation and reduced the yield to 72.1% in 1985 and 48.1% in 1986. A provisional action threshold of 40% larval infestation in flowers was established, based on the increased damage caused by this level of infestation in flowers and pods and the reduction in yield compared with a > 10% pre‐spray infestation. © 1990 Taylor and Francis Ltd.

引用

页码：138 / 140

页数：3

共 19 条

[11]

Jackai L.E.N., Daoust R.A., Insect pests of cowpeas, Annual Review of Entomology, 31, pp. 95-119, (1986)

[12]

Jerath M.L., Insecticidal control of Maruca testulalis on cowpea in Nigeria, Journal of Economic Entomology, 61, pp. 413-416, (1968)

[13]

Karel A.K., Yield losses from and control of bean pod borers, Maruca testulalis (Lepidoptera: Pyralidae) and, Heliothis Armigera (Lepidoptera: Noctuidae). Journal of Economic Entomology, 78, pp. 1323-1326, (1985)

[14]

Ke L.D., Fang J.L., Li T.J., Bionomics and control of the legume pod-borer, Maruca testulalis Geyer, Acta En-Tomologica Sinica, 28, pp. 51-59, (1985)

[15]

Koehler C.S., Mehta P.N., Relationships of insect control attempts by chemicals to components of yield of cowpea in Uganda, Journal of Economic Entomology, 65, pp. 1421-1427, (1972)

[16]

Raheja A.K., Assessment of losses caused by insect pests of cowpea in Northern Nigeria, PANS, 22, pp. 229-233, (1976)

[17]

Singh S.R., Van Emden H.F., Insect pests of grain legumes, Annual Review of Entomology, 24, pp. 255-278, (1979)

[18]

Taylor T.A., The bionomics of Maruca testulalis Gey. (Lepidoptera: Pyralidae), a major pest of cowpea in Nigeria, Journal of the West African Science Association, 12, pp. 111-129, (1967)

[19]

Taylor T.A., The philosophy and science of pest management, Discourse of the Nigerian Academy of Science, 7, pp. 1-27, (1986)

← 1 2 →