00200504

open access

Version of Record

スイデン テンカンバタ ニオケル シリョウ セイサン ダイ2ホウ トウモロコシ ノ ブイベツ コウセイ ワリアイ オヨビ シリョウ セイブン ガンユウリツ ニ オヨボス ジュクセイ ハイスイ システム オヨビ サイショク ミツド ノ エイキョウ

II. Effect of Hybrid Maturity, Underdrainage System and Planting Density on Plant Components and Chemical Consitituents of Forage Maize

Japanese (日本語)

神戸大学農学部研究報告

18(2)

173-180

神戸大学農学部

1989-01

2006-09-15

本文ファイルは、国立情報学研究所CiNiiより提供されたものです。

We reported here the effect of hybrid maturity, underdrainage system and planting density on relative proportion of plant part and chemical constituents of maize (Zea mays L.) cultivar P3732 and P3432. The chemical constituents were analysed only for cultivar P3732. Results obtained were as follows, Symbols of treatment are shown in table 1. 1. Dry weights of leaf blade (LB), leaf sheath+culm+tassel (STEM) and shank+cob+husks (ear residue, ER) were in the order of cultivar P3432>P3732,but the reverse was observed for grain weight. There were the same order for the relative proportion of dry weight of each plant part to dry weight of whole plant. In both cultivars, the dry weight of all of the plant parts decreased with decreasing drainage. The relative proportion of LB and STEM increased and that of grain decreased with decreasing drainage. In both cultivars, the dry weight of all of the plant parts decreased with increasing density and the extent of decrease was in the order of cultivar P3432>P3732. The relative proportion of LB increased and that of grain slightly decreased with increasing density. 2. Moisture content of LB, STEM and whole plant decreased with decrease in drainage. Irrespective of density, crude protein content was in the order of plot 201 and 202<101 and 102,and crude fiber, lignin and crude silicate contents were in the order of plot 201 and 202>101 and 102. Crude fat content was in the order of plot 202<101,102 and 201 in low density. NDF content in all of density and crude ash content in high density were in the order of plot 202>101,102 and 201. Drainage treatment had little effect on the content of the other constituents. 3. The moisture content of LB and STEM were in the order of high<medium and low density. Irrespective of drainage treatment, crude protein content was in the order of iow>medium and high density; ligin content was in the order of low and medium<high density; and crude silicate content was in the order of low<medium and high density. In plot 201 and 202,crude fiber content was in the order of low<medium and high density, and ADF and NDF contents were in the order of low and medium<high density. Crude fat content was in the order of low>medium and high density in plot 101 and low and medium>high density in plot 202. Density had little effect on the content of the other constituents.

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