Development of Soybean Rolling Injection Planter

Rattana Karoonboonyanan; Nopparat Seehawong; Kadit Kwrangtrakul

Authors

Rattana Karoonboonyanan Department of Mechanical Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand.
Nopparat Seehawong Department of Mechanical Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand.
Kadit Kwrangtrakul Department of Mechanical Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand.

Keywords:

Soybean planter, Rolling injection planter, Notillage planter, Direct drilling machine

Abstract

This project was designed to develop a soybean rolling injection planter mounted on a power tiller to be used in untilled fields from which paddy had just been harvested without burning. The planter was modified from a double row of rolling injection planter operated by human power. The modified prototype had an increase in length of puncher from 6.5 cm to 8.5 cm that can penetrate the soil of a field with rice straw. The prototype dimensions were 100 cm in width, 94 cm in length and 52 cm in height. It was a double row seeder with variable interrow spacing of 30 to 75 cm and holetohole spacing of 20 to 30 cm. The prototype was set with an interrow spacing of 50 cm and the holetohole distance of 25 cm. It was tested in an untilled field after harvesting rice. The field capacity of the planter was 0.12, and 0.15 ha/h at traveling speeds of 1.4, and 1.7 km/h, in field with unburnt and burnt straw, respectively. The corresponding field efficiencies for the two fields were 86% and 90%, respectively. The fuel consumption rate was 4 liter/ha. The seed application rate was 56 to 69 kg/ha. Seed damage rate by the planter was 1.5%. The breakeven area for planter compared with the traditional method was computed to be 0.7 ha.

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