Physiological and Ecological Studies on the Regrowth of Herbage Plants : 18. The effect of top dressing and mutual shading on the regrowth of several herbage grasses with the development of stage

DOI JASI Web Site

Bibliographic Information

Other Title
  • 牧草の再生に関する生理・生態学的研究 : 第18報数種イネ科牧草の生育段階別再生量におよぼす追肥および相互遮蔽の影響
  • 数種イネ科牧草の生育段階別再生量におよぼす追肥および相互遮蔽の影響
  • スウシュ イネカ ボクソウ ノ セイイク ダンカイ ベツ サイセイリョウ ニ オヨボス ツイヒ オヨビ ソウゴ シャヘイ ノ エイキョウ

Search this article

Description

In order to study the effect of top dressing of N. P. K fertilizer and mutual shading on the dry weight of regrowth of oats and Rhodesgrass with the development of stage, top dressing treatment, simulated population treatment and control were arranged in the experiment. Dry weight of regrowth was higher at top dressing treatment than the other treatment in both grasses. Dry weight of regrowth of oats decreased with the development of stage at all treatments, and top dressing and mutual shading had no effect on the regrowth of oats at special stage. As to Rhodesgrass, dry weight of regrowth was lower at vegetative stage, and higher at maturing stage, and almost the same degree at internode elongation stage, heading stage and ripening stage in all treatments. So the pattern of dry weight of regrowth was similar at all treatments. But at vegetative stage of Rhodesgrass in simulated population treatment, the dry weight of regrowth was very little. It was supposed that the causes of this phenomenon was as follows. 1. T.A.C. content was lower at vegetative and internode elongation stages of simulated population treatment than the other stages. 2. Vegetative tillers were smaller in number at vegetative and internode elongation stages of simulated population treatment than the other plots. 3. In all treatments, there was no dry weight of regrowth by new tillers at vegetative stage. At vegetative stage of Rhodesgrass in simulated population treatment, all these causes were piled up, and the dry weight of regrowth at this stage was very little.

Journal

Details 詳細情報について

Report a problem

Back to top