ESTIMATION OF CROP YIELD LOSS DUE TO INTERFERENCE BY MULTIPLE WEED SPECIES

被引：84

作者：

SWINTON, SM

BUHLER, DD

FORCELLA, F

GUNSOLUS, JL

KING, RP

机构：

[1] UNIV MINNESOTA,DEPT AGRON & PLANT GENET,ST PAUL,MN 55108

[2] USDA ARS,N CENT SOIL CONSERV RES LAB,MORRIS,MN 56267

[3] UNIV MINNESOTA,DEPT AGR & APPL ECON,ST PAUL,MN 55108

[4] USDA ARS,PLANT SCI RES UNIT,ST PAUL,MN 55108

来源：

WEED SCIENCE | 1994年 / 42卷 / 01期

关键词：

BIOECONOMIC MODEL; COMPETITION; COMPETITIVE INDEX;

D O I：

10.1017/S0043174500084241

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Previous efforts to model crop yield loss from multiple weed species constructed competitive indices based on yield loss from individual weed species. Our model uses a multispecies-modification of Cousens' rectangular hyperbolic yield function to estimate a nonlinear competitive index for weed-crop interference. Results from 13 Minnesota and Wisconsin data sets provide measures of the relative competitiveness of mixed green and yellow foxtails, common lambsquarters, redroot pigweed, velvetleaf, and several other weed species. Competition coefficient estimates are stable over years, but not locations.

引用

页码：103 / 109

页数：7

共 34 条

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AULD BA, 1987, WEED CONTROL EC

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