Effects of different herbicides on weed control, grain yield and hull rate in naked oats

doi:10.11686/cyxb2015105

Abstract

Abstract: In order to select safe and effective herbicides and to determine optimal application rates for oat production, a field trial was conducted in central Gansu. Seven hormonal herbicides were trialed:72% 2, 4-D Butyl ester, 20% Fluroxypyr, 48% Dicamba, 50% Benazolin, 50% Quinclorac, 40% Bromoxynil octanoate plus MCPA-sodium (MCPA-sodium content by 20% plus Bromoxynil content by 20%) and 55% Tribenuron-methyl plus Carfentrazone plus MCPA-sodium (Tribenuron-methyl content by 2.6% plus MCPA-sodium content by 50% plus Carfentrazone content by 2.4%) and one non-hormonal herbicide 75% Tribenuron-methyl. The herbicides were tested at low, medium and high dosages with naked oats to determine their effects on weed control, grain yield and hull rate. The 72% 2, 4-D Butyl ester was harmful to oat production and caused significant increases in hull rates, indicating that it should not be used with this crop. The effectiveness of weed control increased with increases in herbicide dosage. Grain yield also fluctuated with dosage levels. Considering safety, weed control and grain yield, 40% Bromoxynil octanoate plus MCPA-sodium at 1350 mL/hm², 55% Tribenuron-methyl plus carfentrazone plus MCPA-sodium at 750 g/hm² were the best options, showing higher and longer weed control and improved grain yield (21.26% and 18.41% compared with the control, respectively).

SONG Xu-Dong, ZHAO Gui-Qin, CHAI Ji-Kuan. Effects of different herbicides on weed control, grain yield and hull rate in naked oats[J]. Acta Prataculturae Sinica, 2016, 25(1): 171-178.

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