ダウンロード数 : ?
言語
英語
著者
Matsumoto, Takuya
Osman Cifuentes
内容記述(抄録等)
Soil properties in Andosols of the western highlands of Guatemala were investigated and evaluated in relation to maize (Zea mays L.) productivity in comparison to the standard of soil diagnosis for Andosols in Japan to provide basic information. The soil samples were collected from maize fields in 28 sites at a soil depth of 0 to 30 cm in 2008. A maize cultivation experiment was conducted with the same treatment of fertilizer application at 23 sites to discuss the influence of soil properties on maize productivity. The soils were characterized by sandy loam texture, acidic pH, low available phosphorus (P) reflecting high phosphate sorption coefficient, low exchangeable calcium (Ca) and magnesium (Mg), and high exchangeable potassium (K). Cation imbalance derived from relatively low exchangeable Mg and high exchangeable K was observed. Maize yield of the cultivation experiment ranged widely from 0.75 to 6.39 Mg ha−1. Principal component analysis summarized the soil properties into four components relating (1) organic matter and P sorption capacity, (2) soil texture, (3) exchangeable Mg and (4) P availability. Multiple regression analysis indicated that the first component generally related negatively and the third and fourth components related positively to maize yield, and these three components explained as much as 49% of the total variance of maize yield. These results suggested that soil properties greatly influenced maize productivity and low P availability due to high P sorption coefficient, and low exchangeable Mg to K ratio were the main constraints to maize cultivation in this region.
主題
exchangeable cation status
Guatemala
maize productivity
phosphorus availability
soil properties
掲載誌名
Forest Science and Technology
12
3
開始ページ
195
終了ページ
207
DOI
資料タイプ
学術雑誌論文
ファイル形式
PDF
著者版/出版社版
出版社版
業績ID
e19955
部局
生物資源科学部