บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Treatment of seed potatoes with prochloraz for simultaneous control of silver scurf and black dot on progeny tubers.

Denner, F. D. N., Millard, C., Geldenhuys, A. and Wehner, F. C.

Potato Research Year: 1997 Vol: 40 Issue: 2 Pages: 221-227 Ref: 24 ref.

1997

บทคัดย่อ

Treatment of seed potatoes with prochloraz for simultaneous control of silver scurf and black dot on progeny tubers.

Potato seed tubers infected with Helminthosporium solani and Colletotrichum coccodes were treated with prochloraz (as Omega 450 g a.i./litre EC) and/or prochloraz manganese chloride (as Octave 25 g/kg DP), and were planted in 2 separate fields not previously cultivated with potatoes. Dipping seed 28 days prior to planting in 2, 4 or 6 g a.i./litre Omega, and dusting with 500 or 750 g Octave/100 kg seed, significantly reduced silver scurf and black dot incidences on progeny tubers. In one field, the higher concentrations of prochloraz or prochloraz manganese chloride gave slightly better control than the lower prochloraz concentrations. At the second site, postharvest application of 4 g a.i./litre Omega or 750 g Octave/100 kg seed limited development of both diseases on progeny tubers, with slightly better control when an additional prochloraz manganese chloride was applied 14 days before planting. None of the prochloraz treatments adversely affected plant stand or tuber yield.