Controlled traffic for irrigated double cropping in a semi-arid tropical environment: Part 1, Machinery requirements and modifications

Research was undertaken to assess the potential of using controlled traffic for irrigated double cropping in a semi-arid tropical environment. The research was carried out on a cracking clay soil, in a region where the climate and availability of irrigation water give the potential to grow two crops per year. The controlled traffic system required a number of specific implements to ensure that raised beds could be formed and maintained. Stubble retention, in conjunction with controlled traffic, required the use of planting machinery not usually associated with the conventional farming systems used in the area. A tractor and harvester were fitted with narrow section tyres to minimize the likelihood of damage to the edges of raised beds.