NITROGEN-FERTILIZER EFFECT ON BREADMAKING QUALITY OF HARD RED SPRING WHEAT IN EASTERN CANADA

被引:76
作者
AYOUB, M
GUERTIN, S
FREGEAUREID, J
SMITH, DL
机构
[1] MCGILL UNIV, DEPT PLANT SCI, Ste Anne De Bellevue H9X 3V9, PQ, CANADA
[2] AGR CANADA, PLANT RES CTR, OTTAWA K1A 0C6, ON, CANADA
关键词
D O I
10.2135/cropsci1994.0011183X003400050038x
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
The production of bread-quality wheat (Triticum aestivum L.) in eastern Canada might be possible through correct fertilizer management. Field experiments were conducted for 2 yr at each of two sites in Quebec. The influence of N fertilizer level and timing on breadmaking quality and grain ash of four hard red spring wheat cultivars (Columbus, Katepwa, Max and Hege 155-85) known to have potential as bread wheat was investigated. The soil types were fine, mixed, non-acid, frigid Humaquept at Ste-Anne-de-Bellevue and typic, non-acid, frigid Humaquept at Ste-Rosalie. Four rates of N (0, 60, 120, and 180 kg N ha(-1)) were applied at seeding time or 60% at seeding and 40% at anthesis, resulting in a 4 x 4 x 2 factorial experiment with four replications. Increasing N reduced grain and flour ash concentrations and increased flour protein concentration, Hagberg falling number and flour absorption of water. Splitting the N application increased flour protein concentration and bread loaf volume. Cultivar by N level interactions often occurred for farinograph variables. Farinograph readings for Max and Hege 155-85 were improved with N fertilizer addition, but this was generally not the ease for Katepwa and Columbus. In general, all cultivars tested could produce flour suitable for bread wheat production in eastern Canada but the N management required for this varied with cultivar. Despite its high grain and flour yield, Hege 155-85 may not be economical to produce because high N fertilizer applications are required to achieve the appropriate protein concentrations and flour might have to be supplemented with gluten to achieve the required protein concentration.
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页码:1346 / 1352
页数:7
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