Studies on methods of lowland rice culture on upland fields under irrigation I Adaptability of lowland rice varieties to the cultivation on upland fields under irrigation II Differences in the growth and physiological characteristics between lowland rice and upland rice cultivated on upland fields under irrigation

Y.yama, Hirokata

Proceedings Crop Science Society Japan: 349-353


Accession: 025563087

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Earlier work with many varieties of lowland rice grown under irrigation in upland fields showed that early varieties with the same heading date as upland varieties Rikuto Norin No. 12 or No. 24, were the most productive. A group of lowland varieties were later found to be highly adaptable to irrigated upland. The lowland variety proved to be superior in number of spikelets per panicle, percentage of ripened grains and ratio of ear weight to straw. The lowland type also contained a large amount of starch under higher level of N after heading. The yield on irrigated upland can also be increased by planting in drills with a heavy application of fertilizer.