Fig. 4From: Ecological fitness of brown planthopper, Nilaparvata lugens (Stål), to rice nutrient managementRelationship of Nilaparvata lugens nymphal duration with plant tissue nutrient concentration. a nitrogen (N), phosphorus (P), potassium (K), and silicon (Si), b soluble protein (SP), and total free sugar (TFS) content in rice plant (n = 27)Back to article page