23 October 2014 , 06:06 WIB | Read : 1029 | By : Sylvia Madusari, Walman Sibatuara

Palm oil could not be separated to the destructive plant organisms (DPO). One of them is rat. Accoding to Widodo (2008) rat generally consumes food and it is 10% of its weight. But rat will take the food to its nest and will be 40 times doing it in every single day.

In palm oil plantation, rat which attacts the plants is tree rat (rattus tiomanicus), paddy rat (rattus argentiventer) and house rat (rattus diardi). In the certain palm oil plantation, according to Madry (1996), broken palm oil plantation could be 20% - 30%. The damages happening in the  palm oil are the midrid, the growing spot in the early yield and the fruit in the productive plants.

To avoid the damage, it needs strategy which refers to the collective pest control (CPC). To control rat, it could be done mechanically, chemically, hunting or biologically by using the enemy of it. One natural control is by using Tyto alba owls.

The immortal enemy of rat is Tyto alba owl and it is widely spread. The owl is as the predator of the rat because owl is the rapeor which hunts the other animal for getting food. Mardy (1996), owl could adapt well, has incredible sight, good hearing, unheard flying, and has strong claws and pecker.

Owl lays egg twice to three times in a year for about 5 – 8 eggs. Tyto alba owl is one kind potential predator for it has. . .

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