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KMID : 0903519690110010173
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
1969 Volume.11 No. 1 p.173 ~ p.184
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Effects of Amo - 1618 on the Yield , Behavior of Mineral Nutritions and Uptake Ratio Employing P - 32 Labelled Double Calcium Super - phosphate in Rice Plants
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Abstract
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To elucidate the effect of Amo-1618(4-hydroxyl-5-isopropyl-2-methlphenyl trimethyl ammonium chloride, 1-piperidine carboxylate) known as a kind of growth retardant, on the growth, grain yield, increasing the efficiency of nitrogen fertilizer, behavior of mineral nutritious and the rats of phosphorus utilization, this experiment was conducted pot culture method in a vinyl house.
Two nitrogen level, namely, practical nitrogen level(1N) and three times nitrogen level(3N) was made and labelled double-calcium-superphosphate Ca(H₂P^(32)O₄)₂. 2H₂O) as a source of radioactive phosphorus(P-32) was employed 80 μc/pot, respectively.
Rice seedlings, variety $quot;Suwon No. 82$quot;, was transplanted to a 1/50,000 a china pot on June 13 in 1968.
For treatment, at early stage of tillering, 10,000 ppm solution of Amo-1618 was foliar strayed only one time.
The Duncan´s new multiple-range test was adopted for statistical analysis evaluating experimental data at 5% level significance.
The results obtained may be summarized as follows:
1) No significant difference was found among the treatments in plant height, but in plot of Amo-1618 treatment and 3 N level, number of tillers was significantly increased than that of others.
2) Weight of 10,000 kernels and seed-setting rate was also remarkably increased in same treatment above.
3) Grain yield per pot was significantly increased in Amo-1618 and 3 N level application.
This results seemed to be due to the increased the factors on the yield.
4) Contents of nitrogen and phosphorus per cent in the grain was likewise increased in Amo-1618 and 3 N application.
There is, however, no difference among treatments in the content of nitrogen and phosphorus in the leaves and culms of rice plants.
5) On the other hand, the contents of potassium and magnesium, no distinctly tendeny showed among treatments.
6) The rate of phosphorus utilization was significantly increased in the plot of Amo-1618 and 3 N application.
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