The studies on the Crop Water Productivity (CWP) of cocoa to increase productivity in the midst of water scarcity and climate change are currently underdeveloped. Thus, this study aims to find out the trends in climate, productivity, crop water use and CWP of cocoa plantations. The methods included ...

The genetic diversity of candlenut Aleurites mollucana need to be analysed using molecular study for plant breeding purpose. Primer selection are basic steps for molecular study especially in analysis of genetic diversity. The aim of this research was to obtain RAPD primers were able to amplify...

The accurate water use information at each stage of plant growth is important to better understand the efficient and precise crop water requirement for optimal plant productivity. Nurseries of palm oil are a phase where young palm oil requires extra maintenance, particularly in meeting the plant...

Flavonoid and terpenoid compounds are known as theplant secondary metabolites that have high antioxidant activity. Flavonoids and terpenoids plants have the potential as a source of natural antioxidants. Therefore, this study aims to prove the presence of flavonoid and terpenoid compounds in the...

Jelutung is a tree species of the family Apocynaceae that is famous for its latex use as material for chewing gum. In Indonesia there are two species, namely jelutung land (Dyera costulata) and jelutung swamp (Dyera polyphylla). Until now, information on the differences in the two types of jelutung ...

Eurycoma longifolia (EL) is a species that has economic benefits as medicinal ingredients for human health. This species grows in tropical forest areas with high rainfall. Research on the ecology of EL has been done a lot. Still, research related to ethnotaxonomic bioecology that includes...

Hypsiphyla sp. include the Order Lepidoptera, Family Pyralidae. These insects is one of the important pests on mahogany plants (Swietenia macrophylla King.). This pest has been found to attack S. macrophylla plants in North Sulawesi, especially in the area of mahogany plant centers namely North...

This study aims to examine the rooting ability of 24 clones of Pinus merkusii with high resin yield. The explants were propagated by shoot cutting that produced callus. The variables of root cuttings ability were root percentage, cutting height growth, number and length of primary roots, number and ...

The tree improvement research of nyamplung has entered the selection stage at the individual levels having high quality and oil yield properties. In order to maintain the superiority of this characteristics, a proper vegetative propagation techniques is required to multiply selected trees. The...

This study aimed to assess genetic structure of Calophyllum inophyllum mother trees using simple sequences repeats (SSR) markers to control genetic diversity at a provenance seed stand. Leaf samples were collected for DNA templates and 6 SSR primers were used. Genetic data of 280 trees were...