EFFECTS OF ROOT-FEEDING NEMATODES ON ABOVE-GROUND NET PRIMARY PRODUCTION IN A NORTH-AMERICAN GRASSLAND

被引：45

作者：

INGHAM, RE

DETLING, JK

机构：

[1] COLORADO STATE UNIV, NAT RESOURCE ECOL LAB, FT COLLINS, CO 80523 USA

[2] COLORADO STATE UNIV, DEPT RANGE SCI, FT COLLINS, CO 80523 USA

来源：

PLANT AND SOIL | 1990年 / 121卷 / 02期

关键词：

Agropyron smithii; carbofuran; grass production; Poa pratensis; root consumption; Schizachyrium scoparium;

D O I：

10.1007/BF00012321

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The impact of nematode consumption on aboveground net primary production (ANPP) was addressed by treating two areas of mixed-grass prairie with the nematicide carbofuran. Monthly assessments of shoot biomass and nematode populations were made from each treated and control site for two growing seasons. Seasonal mean density of root-feeding nematodes was reduced approximately 82% by carbofuran. ANPP was significantly greater in the treated plots for both seasons in Site 1 but only for the second year in Site 2. Increases in ANPP averaged 51% in Site 1 and 26% in Site 2. It was estimated that root-feeding nematodes reduced ANPP by 16 times more than they consumed. © 1990 Kluwer Academic Publishers.

引用

页码：279 / 281

页数：3

共 11 条

[1] EFFECTS OF SIMULATED GRAZING BY BELOW-GROUND HERBIVORES ON GROWTH, CO2 EXCHANGE, AND CARBON ALLOCATION PATTERNS OF BOUTELOUA-GRACILIS [J].