Prediksi Laju Erosi Guna Penerapan Metode Konservasi Tanah dan Air pada Aktivitas Pertanian Daerah Lereng Warmare

Abstract

<em>This study aims to determine the rate of soil erosion in the agricultural sloping are at Warmare to plan the improvement that can be done so that farming activities can be done without incurring great risk in the damage to the environment and human safety. The study was carried out by conducting ground survey techniques and description of the results of the soil survey and land evaluation. The prediction of erosion rates is done by using the equation of the Universal Soil Loss Equation (USLE). The results showed the actual rate of soil erosion in the area slopes Warmare for each SPT: SPT 1 (56.24 tonnes/ha/year) in the secondary forest land use, SPT 2 (2552.63 tonnes/ha/year) existing land use cultivation, SPT 3 (2325.03 tonnes/ha/year) in the area of the former land use shifting cultivation, and SPT 4 (9.88 tonnes/ha/year) on the use of secondary forest land. The main trigger factor increasing rate of soil erosion on some of SPT is the slope degree and length, as well as agriculture activity without concerning conservation. The improvement necessary for the application of soil and water conservation in the agriculture activity namely (1) slope modifications by using mechanical and civil engineering methods such as terrace, rorak and vertical mulching application; (2) soil surface protection from raindrops and runoff by �using vegetative methods; (3) cultivation techniques collaboration by using agronomic methods.</em>