Abstract
This study aim was to obtain a potato farming conservation technology package that can increase productivity and income of potato farming, and to reduce soil erosion rate. The research had been conducted at area of 15,000 m2 in the sloping upland of Tosari Village - Tosari Subdistrict - Pasuruan during the dry season of 2016. The experiment was designed in randomized block, consisting of 3 treatments of conservation agronomic practices with 4 replicates. The treatments: (1) improved technology package (uni-directional slope beds and ridges contour, combined with green leeks + Setaria Sp. feed grass + recommended fertilizer); (2) agreed technology package (uni-directional slope beds and ridges contour, combined with green leeks, and agreed fertilizer); and (3) farmer’s technology package (uni-directional slope beds, combined with green leeks, and farmer fertilizer). The results showed that the weight of potato tubers 14.17 t ha−1 (increased 49,94%) and leek 0.84 t ha−1 and the pruning of Setaria grass 117 kg ha−1, while the agreed technology the increased of potato tubers weight by 41,05% compared to the farmer’s technology package of 9.45 t ha−1. Application of improved technology obtained the highest profit of Rp. 23,103,500 (equal to 1,714.80 USD), R/C 1.51, and efficiency of chemical fertilizers.
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