21. Green beans can tolerate up to 30 percent defoliation without a change in yield. 22. After 6 to 9 years of moderate to heavy defoliation , the trees die. 23. Some notodontids cause noticeable defoliation of their hosts. 24. The major concern with almond scab is partial or complete defoliation of the tree. 25. Some methods of control have been defoliation in areas in both Oregon and California. 26. It is true that pears can be plagued with leaf spot diseases that trigger defoliation . 27. The disease can cause defoliation , and the spores can overwinter on the fallen leaves. 28. It said defoliation was worst in Germany, Poland, the Czech Republic and Slovakia. 29. And Virginia reported its first defoliation since 1995, with 71, 000 acres affected. 30. By attacking mature passion fruit trees, these lesions cause intense defoliation and fruit rot.
