Efektivitas Ekstrak Biji Pinang (Areca Catechu L.) Terhadap Mortalitas Wereng…

ABSTRACT Rice plant (Oryza sativa L.) is the main food source that provides calories and nutrition which is the staple food for Indonesian society. Rice plant cultivation is inseparable from pests the disturbance. One of the main pest that attacks rice plants is the brown planthopper (Nilaparvata lugens Stal.) because it can cause decrease in rice production up to 100% by causing hopperburn sy…