The potato crop is vulnerable to pests and diseases hence implying a high risk of failure. Growing potatoes requires substantial capital and intensive care. Major insects and diseases of the crop along with their management are discussed as under.HS RANDHAWA...
IT has long been a matter for conjecture as to what insect or insects are responsible in Great Britain for the dissemination of the `virus' diseases affecting the potato plant. Experiments carried out by myself over a period of years show beyond doubt that, out of the normal insect potato ...
Biting and sucking insects have been found to carry the bacilli from one plant to another. The tubers frequently show scurfy or scab-like spots upon their surface, thus greatly depreciating their value for market purposes. The fungus, Sorosporium scabies, which is the cause of the scab, ...
This chapter discusses the major potato diseases worldwide: late blight, early blight, wart, and powdery scab. Late blight, caused by the oomycete Phytophthora infestans, continues to be the main biotic constraint of potato production. Annual losses have been estimated to be about €6.1 billion,...
and water to maintain yield, quality, and protection from diseases and insects. Potato breeding efforts have historically focused on yield, fresh market and processing quality, and storability as well as disease resistance. Genetic variation for these traits in commercial cultivars is low, but relate...
These traits include resistance to viruses, insects, herbicides, abiotic stresses, improvement in quality characters and pharmaceutical possibilities. The main aim of all these developments is to make potato cultivation more efficient, economical and environmentally safe. 展开 ...
Keep the garden and surrounding area free of weeds, which may harbor insects that can spread viruses. Avoid overhead sprinkler irrigation and keep the leaves dry when watering. Remove plant debris from the garden after harvest, since many diseases survive on plant debris from year to year. Do...
Transmission by chewing insects has been reported but none are considered to be specific vectors for PVX. PVX was once studied as a critical problem in seed potato production; however, potato seed certification programmes and the incorporation of disease resistance genes into potato breeding programmes...
PSTVd seems to also be transmitted by pollen and seed and by contaminated mouthparts of several insects not normally considered as virus vectors, e.g., grasshoppers, flea beetles, and bugs. After inoculation of a tuber with PSTVd by means of a contaminated knife or of a growing plant with...
Whitefly adults are tiny, about 1.5 mm long, yellowish insects with white wings. About 114 virus species are transmitted by whiteflies (Homoptera: Aleyrodidae). Of the whitefly-transmitted virus species, 90% belong to the Begomovirus genus, 6% to the Crinivirus genus, and the remaining 4% are...