1. Agent orange is a powerful defoliator.

2. Pineus armandicola Zhang is an important defoliator of armand pine ( Pinus armandi ).

3. Ivela ochropoda is one of the main defoliator pest occurred in Ulmus pumila, and is very serious in Wuqi County.

4. The key pests and rat and pine moth, forest rats, defoliator of the poplars , bristletail.

5. The Separatists, however, sought to blast the Lurmen village out of existence in a field-test of their new defoliator capsule weapon.

6. The main results were as follows:1 Biological characteristics and harm circumstances of main defoliator and mulberry longicoru on poplars1.

7. The major pests which did harm to poplar were wood borer and defoliator. The pests and diseases of poplar in Xinyang City were introduced.