Control of potato virus Y (PVY) in seed potatoes by oil spraying, straw mulching and intercropping

Abstract

Potato virus Y (PVY) is the potato virus with the highest economic impact on seed potato production. Insecticides are efficient in controlling aphids, which are the vectors of this virus, but rarely limit virus spread in the field. Straw mulching and mineral oil spraying are known as alternatives to insecticides to reduce PVY incidence, but important year-toyear variation in efficacy has been observed with both of these techniques. Preliminary studies revealed the efficacy of intercropping in controlling PVY spread, but more data are needed to validate this observation. A four-year field trial was conducted in Switzerland to assess the potential synergistic effect of combining mineral oil spraying with straw mulching to increase the protection of seed potato crops against PVY spread. Furthermore, the efficacy of intercropping with oat and hairy vetch was examined as a novel way to control in-field PVY spread. The present work demonstrates that the modes of action of mineral oil and straw mulching are complementary and reduce the year-to-year variation observed with oil and straw when used alone as PVY control agents. The results also demonstrate the efficacy of intercropping for the control of PVY, and the mode of action of this novel control method is discussed. Overall, this work shows that it is possible to increase the protection of potato fields against PVY spread by combining control strategies with different modes of action that complement each other, such as mulching, oil spraying and intercropping.

Plant Viruses Infecting Solanaceae Family Members in the Cultivated and Wild Environments: A Review

“…Only some viruses remain infective in soil/water for long period (e.g., Tomato mosaic virus (ToMV)). Otherwise, virus colonization of hosts will start anew [46,47] Plant population life cycles annual for many crops annual/perennial Perennial plants can serve as reservoirs for viruses outside the vegetation period in temperate climate [40] Vegetation density commonly dense, with uniform distances-(controllable)…”

Natuurvriendelijke bestrijding van bladluizen : voorkómen van hoge populatiedichtheden en curatief bestrijden

“…Er waren in dit onderzoek geen tellingen gedaan op de vlinderbloemige in de mengteelt. Dupuis et al (2017) zag in een tweejarig onderzoek lagere virusbesmetting in pootaardappel in een mengteelt met gerst of met gerst en wikke terwijl er geen verschillen waren in aantallen bladluizen.…”

“…Het toevoegen van stro als bodembedekking heeft door de lichte kleur een afstotende werking op bladluizen en is toegepast in (poot-)aardappelen. Dit is met name effectief om het aantal bladluizen te verminderen dat op de plant landt als deze net boven de grond komt (Dupuis et al, 2017;Kirchner et al, 2014;Saucke en Doring, 2004). In Finland reduceerde een bodembedekking met stro het besmettingsniveau met PVY in pootaardappel tot 70%, met dit verschil dat in Finland de zwarte bonenluis (Aphis fabae) de voornaamste virusoverbrenger is (Kirchner et al 2014) en in Nederland de groene perzikbladluis (Myzus persicae) (NAK).…”

Abnormal Cytopathological Induced on Datura Metel L. Tissues Reveals Severe Damage after Potato Virus Y (PVY) Infection

“…Potato virus Y (PVY) is one of the most serious viruses infecting potato and other economic crops [1][2][3]. It has very wide host range include different solanaceous and non solanaceous crops [3,4].…”

“…Potato virus Y (PVY) is one of the most serious viruses infecting potato and other economic crops [1][2][3]. It has very wide host range include different solanaceous and non solanaceous crops [3,4]. PVY causes serious diseases in many economic crops, especially potato as PVY affecting both yield and tuber quality and causes severe reduction in potato yield up to 80% [5][6][7][8].…”