Abstract

AbstractThe experiment was conducted to elucidate the influence of slope and levels of straw addition on characters of soil surface crust under natural rainfall. Special metal containers were used with two slope 2% and 6% and three levels of straw (0, 2000 and 4000 kg-h). The results showed decrease in crust thickness, penetration resistance which coincide with land slope increasing and levels of straw addition. The influence of straw levels were significant in crust thickness, penetration resistance, bulk density and increases in moisture content of crust and under crust at the second and third levels in comparison with first level of addition.

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