Utilization of extract tailings and cow manure for increasing of soil quality and uptake of micronutrients of Xanthosoma sagittifolium (L.) schott on sub optimal land of wondama

Abstract

Xanthosoma sagittifolium (L.) Schott has a great potential to be developed as alternative food, particularly for local Papua people. Taro plants that grow in Teluk Wondama regency, generally can grow in mineral soil with less nutrients and high rain fall, so the nutrient tend to be low due to the wipe of the rain water. The low available nutrients need to be improved by applying integrated nutrient management through the addition of enzymatic nutrient from tailing extract and amelioration of organic matters from livestock manure. Study findings indicated that tailing extract containing micronutrient Cu, Fe, Mn, and Zn can be utilized as nutrition and enzymatic nutrients source that plays a role in electronic transport and as catalyst and activator of enzymatic reactions. The test of optimum fertilizer formula in Taro seeding indicated that organic fertilizer enriched by tailing extract at composition of A2 (95%: 5%) significantly increased the growth of Taro seeding. The sequence of micro nutrient absorption level, which was stated in coefficient of transfer value from soil to Taro was Zn>Cu>Mn>Fe.