Community structure of arthropods in Agusan del Norte lowland ricefields

Lina  T. Villacarlos,; Rowena  P. Varela,

Community structure of arthropods in Agusan del Norte lowland ricefields

Abstract:

Varela, R. P. and L. T. Villacarlos. 2006. Community structure of arthropods in Agusan del Nor: lowland ricefields. Ann. Trop. Res. 28(1):36-47 The structure of insect pests and natural enemies associated with white stec-borer (Scirpophaga innonata Walker) in the irrigated and rainfed lowland ricefields i= Agusan del Norte was studied for two cropping seasons. Sweep net method was usec to sample the populations of the various arthropods. More species of arthropods were sampled in rainfed lowland ricefields than in irrigated ricefields, however, difference i; the diversity was not significant. Number of species and populations of arthropods were affected by cropping husbandry practices particularly weeding and application o pesticides. Climate did not significantly affect the arthropod diversity due to the errau: climatic conditions at the onset of the El Nino phenomenon.

References:

ALIERI, M. A. 1994. Biodiversity and Pest Management in Agroecosystems. Food Products Press. NY. 25-113 pp.
CHANDLER, R. F. Jr. 1979. Rice in the Tropics: A Guide to the Development of National Programs. 46-47 pp.
DALE, D. 1994. Insect pests of the Rice Plant - their biology and ecology. In: Biology and Management of Rice Insects. E.A. Heinreichs, (ed.) Wiley Eastern Ltd., India. 363-372 pp.
BLAZEGUI, F. A., J. SORIANO, L. BANDONG, L. ESTORNINOS, I. JONSON, P. S.TENG, B. M. SHEPARD, J. A. LITSINGER, K. MOODY and H. HIBINO. 1990. Methodology used in the IRRI integrated pest survey. Paper presented at the International Workshop on Crop Loss Assessment to Improve Pest Management Rice and Rice-based Cropping Systems in South and Southeast Asia. 11-17 October 1987. IRRI. Los Baños, Laguna, Phils.
HEINREICHS, E. A., KATANYUKUL, W., A. N. M. RESAUL KAREEM and B. C. MISRA 1986. Management of the Insect Pests in Rainfed Lowland rice. In: Progress in Rainfed Lowland Rice. IRRI.Los Baños, Laguna, Phils.
EONG, K. L., G. B. AQUINO and A. T. BARRION. 1991. Arthropod Community Structures of Rice Ecosystems in the Philippines. Bul. Entomol. Res. 81:107-116.
MILRICE. 1988. Accomplishment Report for 1988. Philippine Rice Research Institute, Muñoz, Nueva Ecija.
PRICE P. W. 1984. Insect Ecology. (2^nd ed.). Wiley, New York.