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LA KARIMUNA -
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Agriculture, Biological Sciences & Forestry

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PENGEMBANGAN BIOTEKNOLOGI PUPUK HIJAU PLUS BERBASIS VEGETASI SEKUNDER UNTUK MENINGKATKAN PRODUKSI KACANG TANAH LOKAL PADA LAHAN KERING MARGINAL NINI MILA RAHNI; LA KARIMUNA -
Jurnal Agroteknos Vol 4, No 2 (2014)
Publisher : Jurnal Agroteknos

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The objective of this study was to increase growth and yield of three local peanut genotypes by application of green manure. The pot experiment was carried out at Watuputih, Muna, Southeast Sulawesi. Completely Randomized Design was used in a factorial pattern, replicated three times.  The first factor was genotype of local peanut, consisted of 3 genotypes, namely : (1) Wadaga, (2) Lasehao and (3) Parigi, and the second factor was green manure, consisted of 4 application rates, namely : (1) 0 ton ha-1, (2) 5 ton ha-1, (3) 10 ton ha-1 and (4) 15 ton ha-1.The experiment results showed that application of green manure had significant effects on increased N and P nutrient uptake, nitrat reductase enzymes, yield components and yields.  Parigi genotype response to application of green manure was better than Wadaga and Lasehao. Key words : Genotype, Peanut, Ultisols, Green manure.
KAJIAN PEMUPUKAN KALIUM DENGAN APLIKASI JERAMI PADI TERHADAP PERTUMBUHAN DAN PRODUKSI PADI SAWAH PADALAHAN SAWAH BUKAANBARUDI KABUPATEN BUTON, SULAWESI TENGGARA ASMIN1 -; LA KARIMUNA -
Jurnal Agroteknos Vol 4, No 3 (2014)
Publisher : Jurnal Agroteknos

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Productivity of paddy rice in paddy field in the newly openedland is generally very low due to the low levels of soil fertility and high content of iron that is toxic to plants. Fertilization and appropriate amelioration is needed to improve and increase the productivity of paddy rice. The purpose of this study was to analyze the effect of the combination of K fertilization and rice straw on growth and yield of paddy rice and economic  feasibility of the wetland new openings, and to obtain the proper dosage for hay substituting K fertilizers in paddy fields of new openings. This study was conducted on farmers' fields in the hamlet Aweli,Wakangka village; subdistrict Kapuntori, Buton, Southeast Sulawesi, which was performed from June 2012 to December 2012.The experiment was arranged in a randomized block design with eight treatments and three replications. The treatments were seven straw combinations with K fertilization rate based on the results of soil analysis (HCl extract 25%)  coupled with the control (the farmers’ method). The treatments were as follows: (1) 100 kg KCl without rice straw; (2) 75 kg KCl ha-1+ rice straw 2.5 t ha-1; (3) 50 kg KCl ha-1+ rice straw 5 t ha-1; (4) 25 kg KCl ha-1+ rice straw 7.5 t ha-1; (5) 0 kg KCl ha-1+ rice straw 10 t ha-1; (6) 75 kg KCl ha-1 + rice straw compost 1.0 t ha-1; (7) 75 kg KCl ha-1 + 1.0 t manure ha-1; and (8) 0 kg KCl ha-1 + 1.0 t manure ha-1 (Farmers’ method.The research results showed that the rice straw 2.5 t ha-1 reduced the need of KCl, from 100 kg ha-1 to 75 kg ha-1 and effectively increased grain yield. Provision of 10 t of rice straw can substitute potassium fertilizer application and the results obtained did not differ significantly with administration of 100 kg KCl ha-1, while effectively reducing the level of iron poisoning. Wetland management of technological innovation of new openings by using rice straw with Potassium fertilization increased the yield of paddy and increased the value of the RC ratio of 1.9 to 2.1-3.1, or the value of BC ratio increased to 2-12 times fold higher compared with the treatment of farmers’ method.The highest profits obtained in the application of 75 kg KCl fertilizer ha-1 in combination with rice straw 2.5 t ha-1was in the amount of Rp. 11.597 million ha-1, followed by potassium fertilization with 100 kg KCl ha-1 without straw, and treatment of 0 kg KCl + 10 t rice straw ha-1, Rp.9.951.000 ha-1 and Rp.9.645.000 ha-1, respectively.
KAJIAN POTENSI SUMBERDAYA LAHAN SAWAH, PERMASALAHAN DAN PENGELOLAANNYA DALAM UPAYA PENINGKATAN PRODUKSI PADI DI SULAWESI TENGGARA Asmin .; La Karimuna -; Suharno -
Agriplus Vol 24, No 3 (2014)
Publisher : Fakultas Pertanian Universitas Halu Oleo

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Abstract

Wet land is a sort of land which has a specific character of water availability as a long planting period.  Potency of wet land natural resources in Southeast Sulawesi province is high, where   wet land cropping system has been practiced for a long time by the farmers.  Rice productivity earned for the last ten years from 2004 to 2013 was still relativity low amounted to 2,667 - 4,225 t ha-1.  The objective of this paper was to study the potency of wet land used for rice cultivication, problems faced and management strategies to increase soil productivity for rice cultivication of Southeast Sulawesi province, through reference studies and description methods.  Based on the results of studies indicated that the main problems for increasing rice productivity in the study region were the shortage of using superior variety of rice, low level of soil fertility and discret of application technology based recommendation. In order to increase rice productivity of farming system, various strategies should be applied through the use of high potency of rice variety from the stock seed rice which released by source seed management unit (UPBS) classified as Foundation Seed (FS) and Stock Seed (SS) class; the application of appropriate wet land management through soil and water management, efficiency of fertilizer management (wise use of organic and inorganic fertilizers) and integrated nutrient management and crops in improving sustainable crop production.
Co-Authors Asmin . ASMIN1 - Nini Mila Rahni Suharno -