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Chemical control of potato cyst‐nematode in sandy clay soil
Author(s) -
WHITEHEAD A. G.,
FRASER JANET E.,
STOREY G.
Publication year - 1972
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1972.tb01274.x
Subject(s) - biology , potato cyst nematode , agronomy , nematode , cyst , chemical control , biological pest control , botany , ecology , medicine , radiology
SUMMARY In sandy clay soil in Bedfordshire, potato cyst‐nematode (Heterodera rostochiensis Woll.) was controlled and yields of Majestic potatoes greatly increased when i‐2g aldicarb, 4‐0 g fensulphothion or 10‐3 g diazinon, disulphoton, ‘Isolan’ (i‐isopropyl‐3‐methyl‐5‐pyrazolyl dimethylcarba‐mate) or thionazin per m 2 were incorporated in the top soil before potatoes were planted. Diethyl phosphorothioates controlled H. rostochiensis better than dimethyl phosphates. One hundred and eleven g methyl bromide, 47‐6 g carbon disulphide or 45‐2 g D‐D per m 2 applied to the soil and covered with polyethylene sheeting greatly increased the yield of potatoes, but also increased the number of nematodes in the soil. Estimates of the number of larvae able to invade potato roots in treated soil after harvest and of cysts, total eggs or live eggs selected the same range of treatments as effective in controlling H. rostochiensis.