Spatial and temporal pest dynamics
2004
Duque, U.G. | dela Cruz, M.S. | Marquez, L.V. | Martin, A.R. | Tiongco, E.R.
More natural enemies were significantly recorded in 2001 and 2002, while insect pest populations (stem borers; green and zigzag leafhoppers; brown and white-backed planthoppers) were low, thus, no significant damage. This may be due to the conservation of natural enemies (coccinellid beetles; web and non-web-forming spiders; and wasps) by farmers through using insecticides at an average of only 1.5 per season. Tungro and bacterial leaf and sheath blights were negligible, but the seed-transmitted bakanae disease was recorded at 5% to 30% incidence in field planted to PSB Rc82
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