About KOYAMA YUTAKA
About 公益財団法人日本植物調節剤研究協会
About MORITA HIROHIKO
About 秋田県立大学生物資源科学部
About CHIBA KAZUO
About Cyperaceae
About weed
About biological classification
About morphology(form)
About population occurrence
About reproduction
About tuber
About seed
About habitat distribution
About habitat
About habitat environment
About salt tolerance
About weed control
About herbicide
About soil erosion
About soil conservation
About heavy metal pollution
About removal
About phytoremediation
About soil remediation
About Scirpus maritimus
About Bolboschoenus koshevnikovii
About sulfonylurea herbicide
About paddy field weed
About Botany in general
About Plant physiology in general
About Plant ecology
About Plant damage caused by weeds
About Control of plant diseases and insect damages in general
About 雑草
About モノグラフ
About コウキヤガラ
About Scirpus