Specific Difference in Root Penetration into the Compacted Soil Cakes in Crop Plants

Japanese Journal of Crop Science

Toshihiro MOCHIZUKI¹  Tadahiko FURUYA¹  Shigemi TANAKAMARU¹  Shinichi HAYASHIDA¹ 

关键词: Main root;    イネ科作物;    Root penetration;    主根;    Seminal root;    種子根;    Soil cake;    土壌貫通;    Soil hardness;    土壌貫入;    Tap root;    マメ科作物;   

DOI  :  10.1626/jcs.67.63

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Artificially compacted soil cakes were used to examine the penetration of seminal roots in cereal and tap roots in leguminous crops.Using an oil pressure pump, compacted soil cakes 1 cm in thickness were mode from sandy loam sois which had been sieved through a 2.54-mm screen and had about 13% moisture by volume.The penetration of seminal and tap roots of 30 common and forage crops was examined at 25°C.All crops except maize(Zea mays L.)could penetrate soil cakes with a hardness of more than 11 kgcm<:-3>l:.Among the crops used, the seminal root of six-row barley(Hordeum vulgare L.)could penetrate the hardest soil cake(73 kgcm<:-3>l:).Of the leguminous crops, the tap root of moth bean(Phaseolus aconitifolius Jacq.)could penetrate a soil cake of 59 kgcm<:-3>l:.The seminal roots of 7 crops and tap roots of 4 crops penetrated completely through soil cakes of 11 kgcm<:-3>l:.Among cereal crops except maize, there is a tendency of the larger the diameter of the seminal root, the stronger the penetration force.On the contrary, among leguminous crops except white clover(Trifolium repens L.), the smaller the diameter of the main root, the stronger the penetration force.

【 授权许可】

Unknown