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Effects of nitrogen top-dressed at full heading time and air temperature during ripening period on rice quality were investigated from the viewpoints of the texture of cooked rice and protein, amylose...
Twenty-one samples of hard and soft wheats (both grain and flour at 60% extraction rate) were analyzed for N, P, K, Mg, Ca, Zn and Mn and comparisons in contents and balance between hard and soft whe...
The purpose of this study is to determine if there is an interaction of nitrogen nutrition and water stress on apparent photosynthesis (APS), transpiration (Tr), and water-use efficiency in rice (Oryz...
The influence of soil conditions on increase of nitrogen assimilation and yield as a result of supplemental nitrogen fertilizer application at flowering were examined with soybean (Glycine max L. Merr...
The effect of nitrogen top-dressing (ntd) on the gibberellin (GA3, GA) - induced abnormality of spikelets was investigated during the two years, 1986 and 1987, with using the rice cultivar Sachikaze. ...
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...
Effects of (NH4)2SO4 top-dressing at the flowering stage to soybeans were investigated in view of its nitrogen fixation and assimilation. Possibility of estimating nitrogen fixation by time course mea...
In order to clarify the inter-hill competition at the maturing stage. Using the tracer 15N method. The growth characteristics of rice plants (Oryza Sativa L., cv. Suweon no. 258 and TKM-6) grown in po...
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...
Effects of planting density on nitrogen fixation activity (acetylene reduction activity, ARA), yield and yield components of soybeans (Glycine max (L.) Merr.) were evaluated in the field experiment c...
Measurement of Ammonium Nitrogen Volatilization Retes from Rice Leaves during the Ripening Period.
Rice seedlings of 7.2 in leaf age were transplanted into pots containing culture solution. The control plants received the complete solution and the N-deficient plants received the -N solution. Sample...
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...
An applicability of nitrogen-deep placement culture (NDPC) in warmer area suffered from poor number of spikelets and low sink-source ratio, and responsibilities of NDPC for not only japonica rice cult...
Two experiments were carried out to analyze the expression of some agronomic characteristics by semidwarfing gene sd-1, which has played an important role in improvement of rice productivity per area....

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