Animal manure and mycorriza applied singly and in combination for the control of the rice root-knot nematode (Meloidogyne graminicola Golden and Birchfield) in green onion (Allium fistulosum L.)
2000
Diongzon, M.L.D. | Gapasin, R.M. (Camarines Sur Agricultural Coll., Pili, Camarines Sur (Philippines))
The different animal manure (cow, chicken, goat, sheep and pig) improved the growth of green onion. However, the chicken and cow manure at 5 to 10 tons/ha significantly reduced the number of galls, egg masses and nematode population in roots and in soil compared to the lower rate of 2 tons/ha. Vesicular arbuscular mycorrhiza (VAM) combined with the animal manure increased the number of spores and mycorrhizal infection that resulted in a lower number of galls, egg masses and nematode population in roots and in soil. VAM-chicken manure gave the highest reduction of these parameters that ranged from 69 to 92%. When VAM and the animal manure were applied 2 and 4 weeks before the nematode, the number of VAM spores and percent VAM infection were higher which resulted to 84-89% reduction in galls and egg masses. Likewise, nematode population in roots and in soil was also reduced in these treatments. Top and root weights were higher in plants pre-inoculated with VAM and animal manure
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