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Efficacy of Ricinus communis Fruit Meal with and without Bacillus Species on Suppression of Meloidogyne incognita and Growth of Tomato
Author(s) -
Mashela P. W.,
Nthangeni M. E.
Publication year - 2002
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1046/j.1439-0434.2002.00770.x
Subject(s) - ricinus , biology , meloidogyne incognita , population , nematode , meal , horticulture , agronomy , veterinary medicine , botany , food science , zoology , ecology , demography , sociology , medicine
Abstract The efficacy of ground Ricinus communis fruit, with and without Bacillus species, was tested on suppression of Meloidogyne incognita , growth of tomato, soil electrical conductivity (EC) and soil pH. At harvest, 85 days after applying Ricinus organic amendment, Ricinus and initial population nematode density (P i ), accounted for 64–74% of the total treatment variation (TTV) in final population nematode density (P f ) and 53–89% of the TTV in dry shoot weight. Ricinus , P i and electrical conductivity accounted for 49–69% of the TTV in fresh fruit weight, whereas Ricinus , P i and Bacillus accounted for 65–82% of the TTV in plant height. Because Bacillus × Ricinus interaction was not significant (P > 0.05) for any variable measured, the efficacy of Ricinus fruit meal was independent of microbial activities.