Impact of Rice Variety and Cultivation Regime Through ANOVA

This chapter identified the impact of rice variety and cultivation regime on paddy yield in the large-scale farms. The study objects were 351 fields in a farm corporation of over 113 hectares, locating in the Kanto Region, and the yield was measured by smart combine harvester The ANOVA result indicated that rice variety was a significant factor affecting yield; although the cultivation regime was not significant, it had a significant interaction with the effect of rice variety. According to the result of Duncan’s new multiple range test (DNMRT), the rice varieties were divided into three groups. Further analyses using four factors and the ANOVA results showed that the time of transplanting or sowing, growth duration from transplanting or sowing stage to earring stage, total nitrogen amount, and field area were determining factors. Finally, the key points for higher paddy yield were summarized.