Leafrollers

Farmers battled Terran immigrants like tarnished plant bugs, sawflies, wooly aphids, coddling moths, leafrollers, lesser apple worms, and the arch enemy: plum curculio. ❋ Dozois, Gardner (2006)

Twenty clumps in the small plots and 50-100 clumps in the large plots were inspected for rice planthoppers, 500 clumps were examined for rice borer, 40 clumps in the small plots and 100 clumps in the large plots were examined for rice leafrollers, and 50 clumps in the small plots and 200 clumps in the large plots were examined for rice sheath and culm blight. ❋ Unknown (1995)

Fish are able to reduce populations of rice hoppers and rice leafrollers 2-6 times. ❋ Unknown (1995)

A survey in Xiaoshan on 8 July 1986 showed that there were 90.5 rice leafrollers (second generation) per 100 clumps in the ricefields with fish. ❋ Unknown (1995)

An investigation in Rugao County showed that in rice-fish fields there were 30% fewer eggs of the yellow stemborer, Tryporyza incertulas, the rate of white ears was 50% lower, there were 50% fewer rice planthoppers, the rate of rice leafrollers was 30% lower, the rate of white leaves was decreased by 30%, and the number of rice leafhoppers was 30% lower. ❋ Unknown (1995)

The reasons that fish-farming increased the number of rice leafrollers in the ricefields were that the fish did not eat the larvae. ❋ Unknown (1995)

The survey on 22 September 1987 indicated that there were 15.4 rice leafrollers (fourth generation) per 100 clumps in the late ricefields with fish, an increase of 1.9 times compared with the ricefields without fish. ❋ Unknown (1995)

This was a 6. 5-times increase compared with 12 rice leafrollers in the ricefield without fish. ❋ Unknown (1995)

The company's insecticide products mainly control lepidopterans such as loopers, leafrollers and armyworms, and sucking pests like mites, aphids, whiteflies and thrips.

The number of rice leafrollers in the rice-fish fields was 4.1 heads per 100 hills compared with 5.7 and 4.3, respectively, in the fields with RCT and RCNT (Table ❋ Unknown (1995)