Optimalisasi Lahan Kering Kecamatan Bayan-Lombok Utara Menggunakan Asam Humat Terimmobil dalam Rumput Laut sebagai Pelengkap Pupuk pada Tanaman Jagung (Zea Mays L)

Dhony Hermanto, Siti Raudhatul Kamali, Rina Kurnianingsih, Nurul Ismillayli


Title : The Optimization of Bayan District Dry Land –North Lombok Used The Immobilized Humic Acid in Seaweed as Fertilizer Supplement  for Maize Plant (Zea Mays L). A study on optimization of dry land used the immobilized humic acid in seaweed as fertilizer supplement for maize plant (Zea Mays L) has been done in Bayan District North Lombok Regency Nusa Tenggara Barat Province. It was known that humic acid could increase availability and uptake of nutrient (N, P, K and Corganic) at maize plant in dry land of Bayan District. It was needed a modification technique that lower quantity of humic acid using without diminishing it’s utility, by immobilized humic acid in seaweed. Research design began with the preparation of immobilized humic acid in seaweed via entrapment technique (gel) and covalent bending (liquid). Immobilization result was characterized by infrared spectrophotometer. Agircultural land was mapped according to number of treatments, then each of them was analized physical and chemical properties before planting was done. Bayan agricultural land has sandy and loose texture, reddish brown colour, and neutral acidity (pH 6.97 at depth of 0-20 cm and a pH of 6.80 at depth of 21-40 cm). It has low availability nutrient of soil (Corganic, N, P, K) at 0-20 cm depth and 21-40 cm respectively are 2.950% and 2.860%, 0.067% and 0.076%, 0.001% and 0.004 %, 0.310% and 0.390%. While the cation exchange capacity value at a depth of 0-20 cm and 21-40 cm respectively are 20.95 and 22.16 me. Based on FTIR spectra, humic acid can be immobilized on seaweed as evidenced by absorption shift, especially in the carboxylic acid and amine groups. Humic acid was able to increase nutrient availability and uptake at maize plant through it’s ability in binding, adsorbing and exchanging nutrients. Application of humic acid in soil showed increasing of plant growth (plant height, weight and nutritional value of corn). Availability and uptake of N, P and K are highest in treatment 0.1% humic acid immobilized on seaweed 100 kg ha-1 (gel) and 0.1% humic acid immobilized in seaweed (liquid) with fertilizer 100% NPK dose.


dry land; fertilizer supplement; humic acid; immobilization; seaweed

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Bai N. R., Banu N. R.L. Prakash J.W., Goldi S.J. 2007. Effects of Asparagopsis taxiformis extract on the growth and yield of Phaseolus aureus. J. Basic Appl. Biol. 1(1): 6-11.

BPS. 2002. Nusa Tenggara Barat Dalam Angka. Kerjasama Kantor Perwakilan Biro Pusat Statistik Propinsi NTB dengan Kantor Bappeda Tk.I NTB, Mataram.

Chen, Y., Magen, H. and Clapp, C.E. 2001. Plant growth stimulation by humic substances and their complexes with iron. Proceedings of International Fertiliser Society. Israel. Pp.14

Csizinszky A.A. 1994. Yield response of tomato, cv. Agriset 761, to seaweed spray,micronutrient, and N and K rates. Proc. Fla. State Hort. Soc. 107: 139-142.

Hermanto, D., Kamali, S.R., Kurnianingsih, R. 2012. Pengaruh Asam Humat sebagai Pelengkap Pupuk pada Tanaman Jagung terhadap Efiiensi Pemupukan di Lahan Kering Kec. Bayan – NTB. Jurnal Ilmu-Ilmu Pertanian. 16(2): 100-107.

Jones, J.B., Wolf, Jr.B., and Mills, H.A. 1991. Plant Analysis Handbook. A Practical Sampling, Preparation, Analysis, and Interpretation Guide. Micro-Macro Pub,Inc.

Malcolm, R.E. and Vaughan, D. 1979. Humic substances and phosphatase activities in plant tissues. Soil Biol. Biochem. 11: 253- 259.

Reitz S.R. and Trumble J.T. 1996. Effects of cytokinin-containing seaweed extract on Pheasolus lunatus L. Influence of nutrient availability and apex removal. J. Bot. Mar. 39: 33-38.

Sangeetha M., Singaram P., Devi R.D. 2006. Effect of lignite humic acid and fertilizers on the yield of onion and nutrient availability. Proceedings of 18th World Congress of Soil Science July 9-15. Philadelphia. Pennsylvania. USA.

Sultana V., Ehteshamul-Haque S., Ara J., Athar M. 2005. Comparative efficacy of brown, green and red seaweeds in the control of root infecting fungi and okra. Int. J. Environ. Sci. Tech. 2(2): 129-132.

Tan, K.H. 1978. Effects of humic acid and fulvic acids on release of fixed potassium. Geoderma, J. 21: 67-74.

Tan K.H. 2003. Humic Matter in Soil and Environment, Principles and Controversies. Marcel Dekker, Inc. Madison. New York.

Vaughan, D. and Ord, B.G. 1991. Influence of natural and synthetic humic substances on the activity of urease. J. Soil Sci. 42: 17-23.

DOI: http://dx.doi.org/10.15608%2Fstjssa.v10i2.145

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