1981. Reference : MM-1-12-315

seedbed

| Implementation of the dry seedbed method utilized in the Northern Philippines. | Punch card

1982. Reference : MM-1-12-316

Japanese Techniques

| Japanese utilization of the technique of tillage-irrigation (TI). TI aimed to soften the soil, to hasten organic decomposition, and to mix soil and fertilizer. During crop growth, in the autumn and the winter, they plowed deeply. Later, they plowed in summer. Irrigation would soften soil and clean the plant roots before transplantating to the seedbed. | Punch card

1983. Reference : MM-1-12-317

Plowing and later activities

| Stubble burning was the best after harvest. | Punch card

1984. Reference : MM-1-12-318

Plow and Transplant

| The seedbed was productive if it was plowed. Usually a tractor was utilized to plow in order to kill weeds. | Punch card

1985. Reference : MM-1-12-319

Rice ecology in Japan

| The different levels of basic vegetable growth. Environmental response and response to temperature of different varieties of rice in different areas. | Punch card

1986. Reference : MM-1-12-320

Ecology and cultivation experiment

| The conclusion is that climactic and soil conditions effect the method of cultivation. There was a unique method which could be applied in all conditions, which was dependent on the water level and water retention following the harvest. It might also be productive for the next plantation cycle. | Punch card

1987. Reference : MM-1-12-322

Areas of cultivation

| Areas of cultivation | Punch card

1988. Reference : MM-1-12-324

Government administration of Bantu

| Custom means a behavior pattern which members of a group consider correct. However, members of the same society have different expectations for economics, politics, and religion. | Punch card

1989. Reference : MM-1-12-325

Buganda.

| The government and labor force at Buganda. | Punch card

1990. Reference : MM-1-12-326

Land

| 80% of Thai farmers are land owners, and 90% of the land was agricultural. | Punch card