4.Life Cycle 1)Small brown planthopper Overwinter as 3rd or 4th nymphs in fields of wheat,green-manure or weeds growing in near channels and rivers. *4-8 generations annually in different paddy planting areas;4-5 in northern China. 1) Small brown 1) Small brown planthopper planthopper ™ Overwinter Overwinter as 3rd or 4th nymphs in fields nymphs in fields of wheat, green of wheat, green-manure or weeds growing manure or weeds growing in near channels and rivers. in near channels and rivers. ™ 4-8 generations annually in different 8 generations annually in different paddy planting areas; 4 paddy planting areas; 4-5 in northern 5 in northern China. 4. Life Cycle 4. Life Cycle