The effect of silicon on the growth of the different groups of rice [Oryza sativa] plants
1992
Miyake, Y. (Okayama Univ. (Japan). Faculty of Agriculture)
The experiments were carried out to study the effect of Si on the growth of the different groups of rice plants: Nipponbare (Japonica), RP-9-3 (Indica) and Tiehu-ai-I (China group). These plants were grown in a solution cultured with 100 ppm SiO2 and without silicon in the medium respectively. The composition of the basal nutrient solution was the same as the Kimura B solution. The results were as follows: 1) The growth and yield of the silicon-free rice plant was markedly inferior to the silicon-supplied plant in all groups, respectively. 2) The pH of the culture solution was decreased remarkably by the silicon-free treatment after the active tillering stage for each of the groups. On the other hand, the phosphorus content of the tops of the silicon-free plant was remarkably high compared to that of the silicon-supplied plant
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