PENGARUH PEMBERIAN LAPISAN LEMPUNG TERHADAP PENINGKATAN LENGAS TANAH PADA LAHAN MARGINAL BERPASIR

Abstract

Various methods for water or soil humidity conservation include the use of
chemicals (synthetic matter) and plastic or asphalt layer at certain depth
under soil profile to hold irrigation or rain water entering into the soil to
prevent rapid disappearance from root zone. The present study observed
the role of fine texture soil (clay fraction) in increasing water capacity, and
releasing power of water for the need of plantation in marginal soil with
sand easily pressed structure, and sensitive to water and wind erosion.
The study was carried out in Glagah Coast, Kulon Progo, Yogyakarta. The
results conclude that the addition of 10 cm of clay layer at the depth of 20-
30 cm may optimally increase the humidity of sandy soil.