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PJ (Pueraria Javanica)

Legume Cover Crops (LCC).

Planting legumes cover crop as ground cover is intended to cover the surface of the soil, so that the growth of weeds can be suppressed and reduce nutrient competition with palm trees later on.

Legume cover which often used in oil palm plantation are : Calopogonium Caerulium (CC), Pueraria Javanica (PJ), Calopogonium Mucunoides (CM), Centrosema Pubescens (CP), Mucuna Cochinchinensis (MC), dan Mucuna Bracteata (MB).

In general, the function of legume cover plants in oil palm plantations can be classified as plants that are generally useful (class A). Benefits of legume cover crop in the palm plantation is as follows:
a) Adding organic matter to improve soil structure.
b) Improve soil nutrients status, especially as nitrogen element fixation from the air.
c) Maintaining soil humidity, produce organic matter
d) Improving soil properties due to the land burning (land clearing)
e) Protecting the soil surface and reduce the danger of erosion, especially on steep ground.
f) Reducing the weeds maintenance cost.
g) To boost the growth of major crops and increase production

Type Pueraria Javanica ( PJ )

Originating from Thailand, A very popular cover crop worldwide. especially in coffee, oil palm, citrus and rubber plantations. It is a vigorous twiner and creeper that can be propagandized by seeds and cuttings. The Plant can stand strong sun and smothers weeds ever Chromolena. The seed rate is about 3-4.5 kg/ha

Advantages :
- Good soil acidity and shade tolerance
- Persistent
- High nutritive value, thus secondary use as hay, silage and cut and carry forage