Onion Disease Management

More documents

Recommendations

Info

Distribution of Iris yellow spot virus • Previously reported in Netherlands, Israel and Brazil. • First reported in US in Idaho in 1991. • Lesions were reported on onion in Yuma in 2002-3, and were widespread throughout Imperial County in 2003.
Biology • Host Range: Iris, Jimsonweed, green onion, chives, bulb onion. • The virus has not been detected in seed or bulbs. • <strong>Onion</strong> thrips (Thrips tabaci) ) transmit this virus: Western flower thrips (Frankinella occidentalis) ) does not appear to be a vector.
Page 1 and 2: Onion Disease Management Thomas Tur
Page 3 and 4: Downy mildew Peronospora destructor
Page 5 and 6: Disease development • Favorable e
Page 7 and 8: Fungicide efficacy, Imperial County
Page 9 and 10: Treatment, units/acre 2-10 Applicat
Page 11 and 12: Results Ap # 1 2 3 4 5 Date 2-10 2-
Page 13 and 14: Iris yellow spot virus of onion Imp
Page 15: Iris yellow spot virus of onion Ida
Page 19 and 20: Economic loss • In most infected

Onion Disease Management

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?