Rezultaty - Whan, J. H.

A preliminary report : development of strategic spray programmes with copper oxide for the control of coffee leaf rust in Papua New Guinea /

Kolejni autorzy: “…Whan, J. H.…”

Optimum drop size and volume of spray solution for the application of foliar sprays against coffee leaf rust by hand lance and hydraulic nozzle /

Kolejni autorzy: “…Whan, J. H.…”

Evaluation of back pack spray equipment used to apply agricultural chemicals to crops in Papua New Guinea /

Kolejni autorzy: “…Whan, J. H.…”

Factors influencing the effectiveness of fungicides used to control coffee leaf rust in Papua New Guinea /

Kolejni autorzy: “…Whan, J. H.…”

The effect of coffee leaf rust on canopy size and vield of coffee in Papua New Guinea /

Kolejni autorzy: “…Whan, J. H.…”