Heading and maturity habit, and optimum number of spikelets per unit field area for improvement of grain quality in rice [Oryza sativa] cultivar 'Hohoemi'
1998
Tanaka, K. (Fukuoka-ken. Agricultural Research Center, Chikushino (Japan)) | Matsue, Y. | Harada, K.
To elucidate the characteristics of 'HOHOEMI', a comparative study with 'NIPPONBAE'. and 'MINEASAHI' was made on heading and maturity date, and the number of spikelets per unit field area. 1) variations of periods of heading and maturing by changing transplanting periods were similar to those of 'MINEASAHl'. 2) The number of spikelets per unit field area was greater than that of 'NIPPONBARE'. In the case of fertile land and high fertilization, the number of spikelets per unit field area tended be in excess resulting in a decreased yield and poor grain quality. The target for an optimum spikelet number per square meter was 31,000. 3) The palatability exceeded that of 'NIPPONBARE', similar to 'KOSHIHIKARI' with a 1.3% nitrogen content for brown rice. The optimum amount of nitrogen application was the same as 'MINEASAHI' for the improvement of grain quality
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