The Covering Cultivation System of the Direct Sowing in Sugar Beets. 4. Weeding method in cover culture of beets

von KUWABARA, N.
Veröffentlicht in Tensai Gijutsu Renraku Kenkyūkai Happyō (36. : 1996 : Sapporo) Dai 36kai Tensai Gijutsu Renraku Kenkyūkai Happyō ronbunshū (Heisei 8nen) (1997)