אסיף מאגר המחקר החקלאי

Reducing potato leaf roll virus (PLRV) in potato by means of baiting aphids to yellow surfaces and protecting crops by coarse nets

Year:

1981

Source of publication :

Authors :

Volume :

24

Co-Authors:

Marco, S., Institute of Plant Protection, Volcani Centre, Agricultural Research Organisation, Bet Dagan, Israel

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Abstract:

Surrounding half of the perimeter of potato plots with sticky yellow polyethylene sheets (HPS) stretched vertically at a height of 0.6 m above the soil, reduced the number, of winged aphids by ca. 70% and of PLRV infection by ca. 38%. A YPS mulch cuased an increase in aphid population, PLRV incidence and percentage of misshapen tubers. Covers of white coarse net (2.5×8.0 mesh per inch square ≈ 1×3.1 per mesh per cm square) reduced landing aphids to ca. 2% of those trapped in unprotected plots but increased by factors of ca. 5 to 6000 the number of apterae. PLRV incidence was greatly reduced in protected plots provided that no secondary infection occurred under the net. In plots planted with secondarily PLRV-infected seeds subsequent incidence under the nets was even higher than in the unprotected controls. The use of aphicides in addition to net covers completely prevented the spread of PLRV. © 1981 Kluwer Academic Publishers.

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