Influence of varietal characteristics and uptake of nitrogen on the growth, yield and quality of rice in Fukuoka prefecture [Japan], 5: The pattern of nitrogen uptake by yield on rice variety of 'Tsukushiroman'
2006
Araki, M.(Fukuoka-ken. Agricultural Research Center, Chikushino (Japan)) | Yamamoto, T. | Mizda, Y. | Uchikawa, O. | Tanaka, K.
We clarified the varietal characteristics of nitrogen (N) uptake in case of the rice variety 'Tsukushiroman.' bred in Fukuoka Agricultural Research Center. The results showed that the indexes of N uptake on a yield of 560gm(-2) were 7 - 8 gm(-2), 10 - 11gm(-2), 10 - 11gm(-2) till the panicle formation (PF) stage, full heading (FH) stage and harvest (H) stage, respectively. Furthermore, N content m the brown rice at this point was 11.5 - 11.8gkg(-1) The amount of N necessary for obtaining a yield of 520gm(-2) were 5 - 6 gm(-2), 8 - 9 gm(-2), 9 - 10gm(-2) till the PF stage, FH stage and H stage, respectively. And N content in the brown rice was 11.3 - 11.5gkg(-1). The amount of N necessary for obtaining a yield of 480gm(-2) were 3 - 4 gm(-2), 6 - 7 gm(-2), 8 - 9 gm(-2) till the PF stage, FH stage and H stage, respectively. And N content inthe brown rice was 11.0 - 11.3gkg(-1). These indexes are useful for fertilizing to achieve a target yield.
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