About PAN W L
About Washington State Univ., WA, USA
About TILLMAN B A
About Univ. Alaska, AK, USA
About ULLRICH S E
About Washington State Univ., WA, USA
About Plant and Soil
About Hordeum vulgare
About Wheats and barleys
About Plant nutrition
About Influence on plants
About 耕起
About 無耕起
About 根
About 日変化
About オオムギ
About 遺伝子型
About アンモニウム
About 硝酸塩