ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Tillage, fertiliser and glyphosate timing effects on foxtail barley (Hordeum jubatum) management in wheat.

Blackshaw, R. E., Semach, G., Li, X., O'Donovan, J. T. and Harker, K. N.

Canadian Journal of Plant Science Year: 2000 Vol: 80 Issue: 3 Pages: 655-660 Ref: 32 ref.

2000

บทคัดย่อ

In a field study conducted at Champion, Alberta, Canada, between 1993 and 1997, the effects of tillage intensity (tillage or no-tillage), N rate (0, 60 or 120 kg N/ha as urea) and placement (banded or broadcast), and glyphosate (at 800 g/ha) application timing (preharvest, when grain moisture was 30%; or postharvest, one month after harvest in October) on foxtail barley growth and seed production, as well as on spring wheat yield and quality, were investigated. Tillage reduced the density (in 3 of 5 years), biomass and seed production (in all years) of foxtail barley, and increased wheat yield (in 4 of 5 years) compared to no-tillage. Wheat protein content was unaffected by tillage treatments. Generally, foxtail barley biomass and seed yield increased with added N, but this was affected by placement method; biomass and seed yield were lower with banded than broadcast N in 2 of 5 years. Wheat yield and protein content usually increased with added N, but in 3 of 5 years, the yield was greater when

 N at either rate was banded than when broadcast. In 1995 and 1997, the yields were similar when N was banded at 60 kg/ha and broadcast at 120 kg/ha. Preharvest and postharvest glyphosate applications resulted in similar wheat yields and control of foxtail barley in 2 of 3 years.