Benefits of Palm Bunch Ash Fertilizer.


Palm Bunch Ash

Palm bunch ash is the result of slowly ashing from empty bales in the incinerator. The ash production of cassava is about 0.5% of FFB. Palm bunch ash has a high potassium (K) nutrient content and can be used as a substitute for MOP fertilizer. One kilo gram of long ash is equivalent to 0.6 kg of MOP.

Research has been carried out on the utilization of Palm bunch ash from palm oil mill waste as a source of potassium for rice plants. Palm bunch ash contains 18.48% K2O, 3.51% Mg, 2.40% Ca, and 1.95% P2O5. Based on the K nutrient content, the application of 325 kg/ha of long ash was equivalent to the application of 100 kg/ha of KCl fertilizer. Field experiments were carried out in Ciparay, at an altitude of 672 m above sea level, from October 1998 to March 1999.

The study used a randomized block design with seven treatments and three replications. The treatment consisted of long ash with a dose of 81.25; 162.50; 243.75; 325, and 406.25 kg/ha, KCl fertilizer at a dose of 100 kg/ha, and controls. The results showed that the administration of long ash at a dose of 406.25 kg/ha gave the highest yield on production, production components (number of panicles/clump, number of grains/panicle, and weight of 1000 grains (pig grain), K content in plants and dry weight. In the experiment, the administration of long ash at a dose of 325 kg/ha can replace inorganic KCl 100 kg/ha KCl.

The results of this study provide benefits to the production of rice plants and protect the environment. The effectiveness of the management of cassava as a source of potassium fertilizer needs to be supported by government policies.

Benefits of Palm Bunch Ash

The application of palm bunch ash aims to replace MOP fertilizer and as a liming material to increase soil pH. The results showed that fertilization with long ash on peat soil was more effective than MOP fertilization.

Traits of Janjang Ash

Janjang ash has several properties, including the following.

– Very alkaline (pH = 12).
– Very hygroscopic (easy to absorb moisture from the air).
– Irritating to employees' hands (causing itching and exacerbating wounds).
The nutrients contained in it are very easily soluble in water.

Because of the properties of palm bunch ash, it must be applied quickly (not stored for long), stored properly (in plastic bags, not directly in burlap sacks) and always treated with care.

The application of ash is prioritized for peat/acid soil areas. On peat soil, in addition to TM, palm bunch ash was also given to TBM in the 2nd and 3rd years. In mineral soils, the ash is only given to TM.

For peat soils and acid-sulphate soils, loose ash is applied annually. For areas with non-acid-sulphate acid soils (pH 4-5), long ash is only given once every 6 months.

Oil palm empty fruit bunches as solid waste can be burned and produce bunch ash. The ash was found to contain 30-40% K2O, 7% P2O5, 9% CaO and 3% MgO. It also contains micro nutrients, namely 1,200 ppm Fe, 1,000 ppm Mn, 400 ppm Zn, and 100 ppm Cu.

As an overview, a mill that processes palm oil with 1,200 tons of FFB/day will produce 10.8% bunch ash or around 129.6 tons of ash/day, equivalent to 5.8 tons of KCL, 2.2 tons of Kiserite and 0.7 tons of TSP. With the addition of certain polymers to the bunch ash, granular fertilizers with K2O content of 30 – 38% with a pH of 8 – 9.

The scarcity of KCL fertilizer that is often faced by plantations can be overcome by replacing it with bunch ash. The production cost is also lower than the price of KCL fertilizer.

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