TY - CHAP A1 - Bernard Dell A2 - Daping Xu A3 - Pham Quang Thu ED1 - Ali R. Bandani Y1 - 2012-04-11 PY - 2012 T1 - Managing Threats to the Health of Tree Plantations in Asia N2 - Crop losses by pests (insects, diseases and weeds) are as old as plant themselves but as agriculture are intensified and cropping patterns including the cultivation of high yielding varieties and hybrids are changing over time the impact of the pests becoming increasingly important. Approximately less than 1000 insect species (roughly 600-800 species), 1500 -2000 plant species, numerous fungal, bacterial and nematode species as well as viruses are considered serious pests in agriculture. If these pests were not properly controlled, crop yields and their quality would drop, considerably. In addition production costs as well as food and fiber prices are increased. The current book is going to put Plant Protection approaches in perspective. BT - New Perspectives in Plant Protection SP - Ch. 4 UR - https://doi.org/10.5772/34494 DO - 10.5772/34494 SN - PB - IntechOpen CY - Rijeka Y2 - 2020-11-27 ER -