ANALISIS PENGARUH CURAH HUJAN TERHADAP EROSI PADA TANAH TANPA MULSA DAN DIBERI MULSA

Tesa Gloria Tumangkeng, Verry R.Ch, Warouw, Jody M. Mawara

Abstract


Abstract

The purpose of this study is to know how rainfall affects soil erosion without mulch and soil erosion with mulch treatment.
It is one of the resources that play an important role in the survival of organisms. Rainfall is one of the great climatic elements that
play a role in avalanches and erosion (sutedjo and kartasapoetra, 2002). Rainwater that falls on the earth will result in erosion of
the soil in its path. One of the techniques for land and water conservation is that of mulsa (pratiwi, 2007). The method used in this
study is a secondary data analysis method. The number of data studied by as many as 34 samples through simple, linear regression
analysis methods. Studies suggest that there is a tendency that the higher the precipitation, the more soil erosion is produced. As
for the linrelation equation, it is Y1 = - 1304.4+ 81.411X with r efficiency = 0986 and Y2 = 58,891X - 933.26 with an r.0,985.
Research obtained a value of significance by as high as,000 < 0.05; It could be concluded that the hypothesis (h1) that reads "rainfall
has a positive effect on erosion with and without any kind of mulch," is accepted. Regression coefficient effect of rainfall on erosion
with mulsa treatment is y2 = 81.411-22.5. Can be seen that the regression coefficient of dx is <001. This shows very clearly the
contrast in mulched soil erosion, its erosive drop by as much as 2.2.5 grams.
Keywords: Rainfall, Mulch, Erosion.


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