Evaluation of Soil Contamination on the Washed Root Samples of Cereal Crops under Pot Experiment

Japanese Journal of Crop Science

Akira YAMAUCHI¹  Yasuhiro KONO¹  Toshihiro NONOYAMA¹  Jiro TATSUMI¹ 

关键词: Cereal crop;    イネ科作物;    Root parameter;    根重;    Root weight;    土壌;    Soil;    根のパラメータ;   

DOI  :  10.1626/jcs.57.65

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

To examine the effect of contaminating soil on the measurement of root weight, roots of several cereals grown in pots were recovered from soil and determined their soil contents. Soil remained on the washed root samples at ripening stage (heading stage in 1977, full-ripe stage in 1981) varied from 27.0% to 63.8% on the average of 41.3% of 4 species examined in 1977, and from 13.7% to 36.6% on the average of 25.2% of 4 species and 2 varieties in 1981. Soil on the washed root samples at vegetative stage ranged from 5.6 to 14.3% on the average of 9.0% of 2 species and 2 varieties. When roots were washed after separated from their mother stems soil contamination was decreased to the extent within 10%. Further washing by cutting roots into segments decreased soil contamination significantly within 5%, although the loss of fine roots and tips by the impairment increased up to around 30%. Although an thorough washing efficiently reduces soil contamination within 5% in the present study, determination of the ash free organic matter of root samples is recommended to avoid errors caused by the differences in soil property as well as in plant conditions.

【 授权许可】

Unknown