| Achoimre: | This research was purpose 1) to study the difference of soil physic properties in paddy soil that
was cultivate in organic and conventional, 2) to know interrelationship among soil properties
and, 3) to compared the effect of organic and conventional paddy soil to soil physic properties.
The soil physic properties were collected from 6 location of organic farm, 6 location conventional farm and each location with 3 depth i.c 0-20 c, 20-40 cm, and 40-60 cm. To know
the effect of farming system on soil physic properties, the data were analyzed by Anova at 5% level of significant and then continued by DMRT test, and to know interrelationship among
soil physic properties, the data were analyzed by correlation and regression in SAS 9.1. Result the research showed that 1) Soil physic properties i.e original bulk density, dry bulk density,
permeability, rapid pore drainage, and slow pore drainage in organic farming were smaller than
conventional, whereas particle density, index stability aggregate, and relative slaking index organic farming were higher than conventional, 2) Increased of organic matter content effected
on decreased of bulk density, relative slaking index, dry MWD, and increased of wet MWD.
Increased of clay content effected on decreased of bulk density and other hand increased relative slaking index, dry MWD, and wet MWD, and 3) organic farming improved soil physic
properties than conventional farming.
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