SOIL-MOISTURE RELATIONS AT THE TREE CROP INTERFACE IN BLACK LOCUST ALLEYS

被引:14
作者
SSEKABEMBE, CK
HENDERLONG, PR
LARSON, M
机构
[1] Department of Agronomy, The Ohio State University, Columbus, 43210-1086, OH
[2] School of Natural Resources, The Ohio State University, Columbus, 43210-1086, OH
关键词
ALLEY CROPPING; BLACK LOCUST; COMPETITION; HEDGEROWS; LOCATION IN ALLEYS; SOIL MOISTURE;
D O I
10.1007/BF00705673
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
A study was undertaken in Ohio to determine whether the presence of black locust hedgerows would increase water shortage on crop land. Water was applied to bare soil which had carried pure stand maize in the previous growing season, and to the previously established alley cropping plots, some of which had 100 cm deep below-ground fiberglass partitions to prevent root competition for soil moisture in the alleys. Direct soil evaporation was reduced by covering the soil with a black polyethylene sheet. Soil moisture remaining in the top 45 cm soil depth was monitored for 8 days. Soil 1 had a higher organic carbon content and contained more moisture than Soil 2, which had more gravel than Soil 1. In Soil 2 there was significantly less water in alleys without below-ground partitions than on bare soil. In alleys without below-ground partitions, the hedgerows reduced soil moisture content of the alleys by about 8% on Soil 1 and 32% on Soil 2, after 8 days following water application. In the top 45 cm depth of Soil 1, the influence of the hedgerows in the same treatment was large within 76 cm of the hedgerows but declined farther inside the alleys. For Soil 2 which had more gravel in the lower soil layers, which prevented deep growth of black locust roots, the influence of the hedgerows was pronounced throughout the alleys but was also most marked within the 76 cm distance from the hedges.
引用
收藏
页码:135 / 140
页数:6
相关论文
共 8 条
[1]  
Babalola O., Lal A., Subsoil gravel horizon and maize root growth. I. Gravel concentration and bulk density effects, Plant and Soil, 46, pp. 337-346, (1977)
[2]  
Babalola O., Lal A., Subsoil gravel horizon and maize growth. I. Effects of gravel size, inter-gravel texture and natural gravel horizon, Plant and Soil, 46, pp. 347-357, (1977)
[3]  
Budelman A., Zander P.M., Land-use by immigrant Baule farmers in the Tai region, South-West Cote d'voire (Ivory Coast), Agroforestry Systems, 11, 2, pp. 101-123, (1990)
[4]  
Cholick F.A., Welsh J.R., Cole C.V., Rooting patterns of semi-dwarf and tall winter wheat cultivars under dryland field conditions, Crop Science, 17, pp. 637-639, (1977)
[5]  
Kang B.T., Grime H., Lawson T.L., Alley cropping sequentially cropped maize and cowpea with Leuceana on a sandy soil in Southern Nigeria, Plant and Soil, 85, pp. 267-277, (1985)
[6]  
Lal R., Agroforestry systems and soil surface management of a tropical alfisol. 1. Soil moisture and crop yields, Agroforestry Systems, 8, pp. 7-29, (1989)
[7]  
Rao, Sharma M.M., Ong C.K., A study of the potential of hedgerow intercropping in semi arid India using a two-way systematic design, Agroforestry Systems, 11, 2, pp. 243-258, (1990)
[8]  
Ssekabembe C.K., Henderlong P.R., Below-ground interactions in alley cropping. Appraisal of first-year observations on maize grown in black locust (Robinia pseudoacacia) alleys, Proceedings of the Second Conference on Agroforestry in North America, 18–21 August, 1991, Springfield, Missouri, pp. 58-73, (1991)