Tillage and tractor traffic effects on soil compaction in horticultural plots used for urban agricul

来源 :第四届城市、工业、交通和矿山土壤国际会议(The 4th International Conference on Sol | 被引量 : 0次 | 上传用户:oyocean1
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Urban agriculture has sprouted among residence of many towns in South Africa and Botswana due to economic and food security concerns by urban communities.A system is used where tractor operations are hired from nearby farmers and used to mange horticultural fields located in urban and peri-urban areas.This study was prompted by concerns that soil compaction in horticultural fields due to the use of conventional tillage practices with tractors was,not only limiting the performance of fruits and vegetables,but also affecting the quality of water resources due to erosion.Soil penetrometer resistance and bulk density were measured in the profiles of three fields (vegetable,orchard & vineyard) that were adjacent to each other but had used a similar tillage traffic system over the years for tractor traffic was used for seedbed preparation and weeding respectively in the vegetable and orchard fields while in an adjacent vineyard was not trafficked.Higher soil compaction was evident in the orchard and vegetable fields compared to the vineyard.The location of compacted layers within the profiles was related to the nature of tractor traffic applied.There was subsoil compaction in the orchard and vegetable fields while shallow compaction was observed in the vineyard.Apart from tractor traffic,low organic matter content and the hardsetting behavior of the soil could have exacerbated the compaction.It was concluded that tillage practices are diminishing the quality of soils used for horticulture production in urban areas in the study area.It was therefore recommended that controlled tillage and other management strategies,especially those that increase the organic matter content of the soils,be adopted that not only ameliorate the existing compaction,but also sustain the productivity of the soils used for urban agriculture.
其他文献
会议
会议
会议
会议
The paper studied the change of land use and its impact on soil quality and then predicted the change of land use and cover in structure and space.Based on the study above this paper predicted the imp
The geochemistry and mineralogy of urban soils are influenced by various superimposing anthropogenic and geogenic factors.Urban development starts on natural soils originally reflecting the geogenic g
Soil contamination and vegetation condition complex assessment within the Vladimir city area applying surface methods,statistic data analysis,mathematic modeling and remote sensing methods has been ca