P. Walker

发表

Crop losses: The need to quantify the effects of pests, diseases and weeds on agricultural production

P. Walker, 1983 .

The Assessment of Crop Losses in Cereals

P. Walker, 1983 .

Insecticide studies on the maize stalk borer, Busseola fusca (Fuller), in East Africa.

P. Walker, 1960 .

European and Mediterranean Plant Protection Organization (EPPO) Meeting on Wheat and Maize Protection in the Mediterranean Area and Iran, Istanbul, Turkey May 1979

P. Walker, 1980 .

Losses in Yield Due to Pests in Tropical Crops and Their Value in Policy Decision-Making

P. Walker, 1987 .

The use of granular pesticides from the point of view of residues.

P. Walker, P T Walker, 1971, Residue reviews.

Heteronychus White Grubs on Sugar Cane and Other Crops

P. Walker, 1968 .

The Relation between Infestation by Lepidopterous Stem Borers and Yield in Maize: Methods and Results1

P. Walker, 1981 .

THE RELATION BETWEEN INFESTATION BY THE STALK BORER, BUSSEOLA FUSCA, AND YIELD OF MAIZE IN EAST AFRICA

P. Walker, 1960 .

Interpreting declines in HIV prevalence: impact of spatial aggregation and migration on expected declines in prevalence

T. Hallett, G. Garnett, P. White, 2008, Sexually Transmitted Infections.

A Review of the Yield Losses in Graminaceous Crops Caused by Chilo spp.

K. S. Seshu Reddy, P. Walker, 1990 .

Developments in maize stem-borer control in East Africa, including the use of insecticide granules.

M. Hodson, P. Walker, 1976 .

Methodology for assessing crop losses due to pests of vegetables.

H. C. Govindu, J. Jenkyn, P. Walker, 1980 .

Action of Insecticides on a Stem Borer of Oats: the Frit Fly

P. Walker, 1953, Nature.

Assessment of crop losses due to pests and diseases (Proceedings of the workshop held from Sept. 19-30 1977 at UAS, Bangalore).

H. C. Govindu, G. K. Veeresh, P. T. Walker, 1980 .

Phorate for Insect Control in Maize

P. Walker, 1965 .

Insecticide studies on East African agricultural pests. III. Seed dressings for the control of the bean fly, Melanagromyza phaseoli (Coq.), In Tanganyika.

P. Walker, 1960 .

Sex Differences in the Pupae of Some African Agricultural Pest Lepidoptera

P. Walker, 1966 .