WILD POINSETTIA (EUPHORBIA-HETEROPHYLLA) INTERFERENCE WITH PEANUT (ARACHIS-HYPOGAEA)

被引：27

作者：

BRIDGES, DC ^{[1
]}

BRECKE, BJ ^{[1
]}

BARBOUR, JC ^{[1
]}

机构：

[1] UNIV FLORIDA,CTR AGR RES EDUC,JAY,FL 32565

来源：

WEED SCIENCE | 1992年 / 40卷 / 01期

关键词：

COMPETITION; CRITICAL PERIODS OF COMPETITION; INTERSPECIFIC COMPETITION; INTRASPECIFIC COMPETITION; EPHHL;

D O I：

10.1017/S0043174500056915

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Research was conducted during 1988 and 1989 in Georgia and Florida to determine the density-dependent effects and critical periods of wild poinsettia interference with peanut. Peanut yield loss ranged from 0 to approximately 50% over the wild poinsettia density range from 0 to 32 plants 9 m-1 peanut row. Predicted peanut yield losses across 2 yr in Georgia were 0, 4, 8, 12, 15, 26, 40, and 54% for season-long wild poinsettia interference at densities of 0, 1, 2, 3, 4, 8, 16, and 32 plants 9 m-1 of row, respectively. Across 2 yr in Florida, predicted peanut yield losses were 0, 9, 14, 22, 30, 37, and 41% for wild poinsettia densities of 0, 1, 2, 4, 8, 16, and 32 plants 9 m-1 row, respectively. Peanuts had to be maintained poinsettia free for 10 wk after peanut emergence to prevent yield loss. Wild poinsettia that interfered with peanut for more than 2 wk after peanut emergence reduced peanut yield.

引用

页码：37 / 42

页数：6

共 11 条

[1]

BANKS PA, 1988, P SO WEED SCI SOC, V41, P63

[2]

BANNON J. S., 1976, WEEDS TODAY, V8, P1

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