Abstract
The study was conducted to establish the par-tially shallow tilling and sowing (PSTS) method by using the modified rotary in order to plow and sow under the highly humid soil conditions. The modified rotary was replaced rotary helloes of sowing parts of which with cultivator blades. The study evaluated the emergence rate, the growth and yield of soybean, when the PSTS method was used. The results showed that the emergence rate was higher in PSTS method re-gardless of how much or little it rains. In addi-tion, the main stem length was longer, the lowest podding position was higher, and yield was also higher with PSTS method than those with usual method.
