Abstract            Volume:12  Issue-7  Year-2024         Original Research Articles

Online ISSN : 2347 - 3215 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcret@gmail.com

Direct-seeded systems with appropriate conservation techniques have the potential to produce rice while addressing labor and water shortages. The study included three selective direct-seeded rice planters under wet (hill drop and broadcasting) and dry (drilling) field conditions. The hill drop and broadcasting experiments were conducted at Yamagata University Faculty of Agriculture's Takasaka farm. In contrast, the drilling experiment was carried out in the Mikawa area in a farmer's field with three replications, and the Japanese rice variety 'Haeunki' was used. The field size for the hill drop planter was 0.024 ha, while that for the broadcasting and drilling planters was 0.3 ha. The total working and operating time (hours), operating speed (km/h), planting width (m), and seed rate (kg/ha) data were collected and evaluated to assess the fieldwork efficiency and accuracy of the planting machines. The drilling planter with an average working speed of 2 km/h produced the highest fieldwork efficiency (78.1%). To evaluate the effect of planting methods on grain yield, three subtest plots were randomly selected at the harvesting stage for the hill drop experiment, with 60 hills per test plot, broadcasting (3.0 m²), and drilling (3.24 m²) per test plot area. The drilling experiment produced the maximum grain yield (7.1 tons/ha). Even though the highest grain yield was obtained during drilling, we proposed a hill drop planting machine for rice cultivation due to its resource savings (time, labor, and seeds), low weed density, appropriate input application and field management, and ease of operation.

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