PENGARUH MULSA BATANG JAGUNG DAN STRIP RUMPUT TERHADAP EROSI TANAH PADA LAHAN KERING

Abstract

EFFECTS OF CORN STALK MULCH AND GRASS STRIPS TOWARD SOIL EROSION OF DRY LAND

Soil conservation has a very important role in the prospect of land development to overcome the problem of land degradation. This study aimed to determine the effects of corn stalk mulch and grass strip toward soil erosion of dry land. Study about some research data from Nurdin (2012) entitled "Combination of Soil Conservation Techniques and Its Effect on Corn Yield and Soil Erosion in Dry Land of Biyonga Sub-watershed, Gorontalo Regency", and Jaka (2017) entitled "Effect of the Treatments of Corn Stalk Mulch and Strip of Reinforced Terrace of Surface Runoff, Erosion and Farming Results" has been carried out on dry land farming of Keduang Sub-watershed, Bengawan Solo Watershed in Sendangsari Village, Batuwarno Sub-District, Wonogiri Regency were then analyzed descriptively by the researcher. Results showed that Biyonga Gorontalo Sub-watershed has an erosion value without treatment obtained from the calculations of USLE Method was 150.09 tons ha^-1year^-1, whereas in Keduang Solo Sub-watershed the value of soil erosion on untreated soil was 12.77 tons  ha^-1year^-1. The combination of given treatments was the provision of mulch and grass strips. The erosion category of both Biyonga and Keduang Sub-watersheds was classified as heavy, but with the application of vegetative soil conservation technology (mulch and grass strips) can reduce the level of land degradation even more and the rate of erosion occurs.