Pengaruh ekstrak gulma terhadap patogenisitas Plasmodiophora brassicae W. pada tanaman petsai.
1991
Djatnika I.
Controlling of P. brassicae by several methods was used, but none was effective. The experiment was conducted at greenhouse in Segunung Horticulture Research Station from February until April 1988. The results showed that Ageratum sp. extract could decrease gall size in several spore concentration, but the extract of Galinsoga parviflora, Artemia vulgaris, Eleusina indica and Cyperus sp. could not.
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