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Vertical Distribution of Meteorological Factors in a Model Population of Rice Plant.
Five rice cultivars, three Japonica and two hybrids of Japonica-Indica, were grown in pots to examine the influence of low night temperature (10°C) on photosynthesis and transpiration during the perio...
Field and laboratory experiments were carried out in 1987 and 1988 in order to study the effects of pyroligneous acid and mixture of charcoal with pyroligneous acid (pyroligneous acid 1: charcoa1 4; S...
This study was undertaken to clarify the effects of root pruning on the organic constituents and early growth in each organ of seedling after transplanting, using 6 leaf aged seedlings without prunin...
The effect of ambient humidity on the photosynthetic rate of a rice plant population model (area: 120×60 cm, Planting density: about 40 plants/dm2, leaf area index: 6∼7, plant height: about 30 c...
The amount of N in plants increased exponentially at the early growth stage (y=abx) and linearly at the middle and late growth stages (y=a+bx). The crossing point of the two equations coincided with t...
Investigations were made on the effect of isoprothiolane (diisopropyl-1, 3-dithiolan-2-ylidene malonate, IPT) on the ripening of rice (Oryza sativa L.) under the low temperature conditions. The simil...
This study was carried out to clarify the effect of controlled rhizophere sizes on various characteristics of each organ at the heading and maturing stage in paddy rice plants (Oryza sativa L., cv. N...
This experiment started from the observation that the cross section of a rice hill was ellipse in shape. When two rice plants cv. Koshihikari were transplanted in a 1/2000 are Wagner pot, the rice hil...
Three cultivars of rice plants were grown in pots in a shading frame of 50% light intensity and on shadowed place at high altitude of 303m in hillside during the different period from tillering to ear...
Field experiments on the response of rice plants to slow release fertilizer (Meister 10, MS10) were conducted from the 1986 wet season (WS) to the 1987 WS at IRRI, with ammonium sulfate (AS) as contr...
The emergence and elongation of the tiller buds of rice plants are greatly affected by the environmental temperature, especially by the temperature around the culm-bases where the tillers differentiat...
Auricles developing on the leaves of main stem in var. Koshihikari were the longest in the fourth leaf from the flag leaf. The length of auricle continued to become shorer than the one below and fina...
In sample survey on field experiment, samples have to be sampled at random in principle, but samples are often taken systematically due to restriction of time, labor and plot area. In order to get inf...
Under the two types of nitrogen dressing which prevail in Miyagi prefecture, rice cv. Sasanishiki was cultivated in the paddy field, and the tillering pattern was analyzed. One type of nitrogen dress...

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