SOIL CHEMISTRY CHARACTER, N, P AND K UPTAKE, AND GROWTH AND PRODUCTION OF CORN (Zea mays L.) DUE TO THE GRANTING OF SAGO PALM WASTE COMPOST AND LIQUID ORGANIC FERTILIZER (LOF) IN ULTISOLS

Elizabeth Kaya, Adelina Siregar, Diane Matulessy, Masita Hasan, Arsando Akollo

Abstract


Ultisol is one type of marginal land that is acidic because formed on the parent material wry such as granite, sandstone, and loose materials that have undergone further weathering (Hanifah, 2009), but many efforts are made to the area of Agriculture. Nevertheless, this type of soil has a lot of obstacles mainly from the chemical, physical, and biological soil. Some chemical constraints encountered in land use podsolic include: low soil pH (acid soil reaction), especially the nutrient content of P is low and the concentration of Al interchangeability high. To improve soil fertility, then organic matter is one of the alternative courses of action. Organic matter (compost Sago palm waste and Liquid Organic Fertilizer) to the soil has major benefits is to improve the physical condition of the soil (soil structure, save water), and chemical (binding and provide nutrients, increase CEC). The purpose of this study are: 1. Improve the chemical properties Ultisol, 2. Increasing uptake of NPK plant and crop growth and yield of corn. Research conducted in the field, namely in Telaga Kodok Village. The experiment was designed with 4x3 factorial design, arranged according to a randomized block design (RBD) with three replications. The first factor is the provision of compost Sago palm waste, namely: K0 = without compost, K1 = 30 ton/ha, K2 = 45 ton/ha, K3 = 60 ton/ha.  The second factor is the provision of liquid fertilizer (C), namely: C0 = without fertilizer Liquid, C1 = 10 L/L solution, and C2 = 20 mL/L. The results showed that the compost combined with Liquid Organic  Fertilizer can improve pH, Al can be exchanged, total-N and P-available soil, Uptake-P, Uptake-K, and dry weight of seed corn. While the treatment of sago palm waste compost and liquid fertilizer independently able to raise the K available soil, N-uptake, and affect plant growth (height and trunk diameter) of corn.  Sago palm waste compost treatment dose of 60 ton ha-1 and liquid organic fertilizer dose of 20 mL/L solution is able to increase the Al can be exchanged, total-N and P-available soil respectively 0.56 cmol(+)/kg, 0.21% and 31.00 ppm; also able to increase the uptake of P, K uptake, and weight dry seed corn respectively 0.21% and 1.26%, and 121.33 g plant-1.  Sago palm waste compost treatment dose of 60 ton/ha and liquid organic fertilizer dose of 10 mL/L solution is able to increase the  pH soil of 5.70.
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Keywords


Compost Sago Ela; Soil Chemestry Character; Ultisols; POC; Corn

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DOI: http://dx.doi.org/10.5400/jts.2022.v27i2.%25p

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