APLIKASI FORMULASI DOSIS MIKORIZA DENGAN KONSENTRASI AIR KELAPA DAN PENGARUHNYA TERHADAP PERTUMBUHAN BIBIT KAKAO (Theobroma cacao L.) DI MEDIUM ULTISOL

Abstract

The problem in large scale cacao nurseries is the limitated top soil as a planting medium. The use of ultisol as a medium requires improvement with the aim of producing quality cocoa seeds.The study used a non factory completely randomized design (CRD) with 9 treatments of mycorrhizal (g) formulations with coconut water (%): 5 g and 50%, 7,5 g and 50%, 10 g and 50%, 5 g and 75%, 7,5 g and 75%,   10 g and 75%, 5 g and 100%, 7,5 g and 100%, 10 g and 100%. The result showed that the treatment mycorrhizal with coconut water had an effect on seedling height, root volume, and dry weight of cocoa seeds. Mycorrhizal dose of 10 g per polybag with 50% coconut water gave the best cocoa seed yield and could increase number of leaves, seedling weight, root volume and dry weight of cocoa seedlings.

Key words:Nursery, Theobroma cacao L., Mycorrhiza, Coconut water, Ultisol