Details

Autor(en) / Beteiligte

• TEICH, A. H.
• SAMPSON, D. R.
• SHUGAR, L.
• SMID, A.
• CURNOE, W. E.
• KENNEMA, C.

Titel

YIELD, QUALITY AND DISEASE RESPONSE OF SOFT WHITE WINTER WHEAT CULTIVARS TO NITROGEN FERTILIZATION IN ONTARIO, CANADA

Ist Teil von

• Cereal research communications, 1987-01, Vol.15 (4), p.265-272

Ort / Verlag

Cereal Research Institute

Erscheinungsjahr

1987

Beschreibungen/Notizen

• Soft white winter wheat cultivars; Augusta, Frankenmuth, Fredrick and Houser, were grown in field trials at applied nitrogen (N) levels of 0, 40, 80, 120 and 150 Kg N ha−1. Cultivar variation in yield response to levels of N was minor and non-significant (P < .05) and the estimated advantage of individual cultivar N prescriptions for economic optimum yield varied from 0 for Frankenmuth to $1.12 ha−1 for Augusta. Lodging tended to increase with increasing N, more for Houser than Augusta and Fredrick. Grain protein also tended to increase with increasing N, especially for Fredrick. Powdery mildew tended to increase with increasing N, with cultivars varying little in their rate of increase. Leaf rust tended to increase with increasing N, but Fredrick and Augusta's rates of increase were considerably less than the rates for Frankenmuth and Houser. Scab tended to increase with increasing N for Augusta and Houser but not for Frankenmuth and Fredrick. At the level of N for optimum economic yield, 77 Kg N ha−1, the other traits studied were generally at acceptable levels.