Effects of releasing two batches of ducks on the population of rice insect pests and natural enemies

Issue Date

10-2016

Abstract

The rice-duck production system is a traditional practice in China, Japan and Korea. It was introduced to the other Asian countries several years ago. The common practice is that 100-150 ducklings are introduced into the paddies at 10-15 days after transplanting. The ducks are then withdrawn from the rice paddies at heading stage. Results from previous studies at PhilRice showed that 500-1,000 ducks/ha stocking densities are technically and economically feasible. The versatility of ducks as biological control agents paved the way for a more ecological and safer approach to pest management. Planthoppers and defoliators are emerging late season pests which can result in high yield loses. Integrating another batch of ducklings into the rice paddies at heading stage may provide protection against late season pests and will provide additional income. To determine the effect of the release of two batches of ducks as biological control agents, a field experiment was established during 2015 dry and wet seasons at the experimental field of PhilRice Central Experiment Station. The results revealed that arthropod populations in plots without ducks were higher starting at 60 DAT but the effect was insignificant on pest damage.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

30

Issue

2

Page

184

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

FULGOROIDEA; DUCKS; PEST INSECTS; ORYZA SATIVA; RICE; CROPPING PATTERNS; CROPPING SYSTEMS; INTEGRATED CONTROL; INTEGRATED PEST MANAGEMENT

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