CHANGES IN SOIL AGGREGATE, BULK DENSITY AND SOIL PERMEABILITY RATE AS THE INDICATORS OF SOIL CRUST PROCESS THROUGH THE USE OF CHICKEN MANURE AND PAM UNDER INTENSE RAINFALL WITH ONE DAY DRAINAGE PROCESS = PERUBAHAN AGREGA

Abstract

Soil crust is a soil surface layer which is more compact, hard, and brittle when dry than underlaying material. Soil aggregate stability, bulk density and soil permeability rate are closely related to this process. This experiment was conducted to evaluate the effects of chicken manure doses and certain chicken manure with PAM (Polyacrile Amide) on soil aggregate, bulk density and soil permeability rate. The result of this research, are: (1) an incremental addition of chicken manure into soil will increase soil aggregation percentage, soil stability and soil permeability rate, (2) the combined incremental additions of chicken manure with PAM were found to be more effective than only an incremental additions of chicken manure, increasing the aggregation percentage, soil aggregate stability, from the soil one day drainage process, but another case in decreasing the bulk density permeability rate from the soil with the same process