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All Journal Indonesian Journal of Agricultural Science Jurnal Zeolit Indonesia
M. Al-Jabri
Indonesian Soil Research Institute
Agriculture, Biological Sciences & Forestry Education

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SOIL PROPERTIES OF THE ALLUVIAL PLAIN AND ITS POTENTIAL USE FOR AGRICULTURE IN DONGGALA REGION, CENTRAL SULAWESI Al-Jabri, M.
Indonesian Journal of Agricultural Science Vol 8, No 2 (2007): October 2007
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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Abstract

Agricultural lands of Donggala region are extensively distributedin alluvial plain. However, information on soil properties andfertility constraints has not been known in detail. An investigationof soil resources was conducted in September 2003 andDecember 2004 to characterize surface soil properties of alluvialplain and to evaluate soil fertility constraints. For this study,55 representative soil profiles consisting of 187 soil sampleswere selected for physical, chemical, and mineralogical analyses.The soil profiles were classified as soil groups of Ustifluvents,Haplustepts, Eutrudepts, and Endoaquepts. All the soil physicaland chemical data were calculated as weighted average based ontop 30 cm soil layer analyses. The results showed that soil textureranged from sandy loam to loam. In ustic moisture regime,the average pH was neutral (7.0-7.2), but in udic moisture regimeit was slightly acid (5.5-6.2). In all soil groups, the organiccarbon content was very low to low (0.58-1.44%), P retentionwas very low (3-18%), and soil cation exchange capacity (CEC)was very low to low (9-14 cmol(+) kg-1). In contrast, all the soilgroups showed very high content of potential phosphate (81-118 mg P2O5 100 g-1) and potassium (338-475 mg K2O 100 g-1),but the available phosphate and potassium were 16-47 mg kg-1P and 0.18-0.35 cmol(+) kg-1, respectively, which were consideredto be low to medium range. The very high P2O5 and K2O wereprobably derived from weathered mica-schist and granite rocks,but low exchangeable K was probably due to K fixation. Thesand mineral fraction was composed of relatively high (> 20%)weatherable minerals of acid parent materials, such as orthoclaseand sanidine, while the clay mineral was composed ofsmectite and illite. The low soil-CEC, low organic matter, andexchangeable K contents were the main soil fertility constraints.Therefore, soil management should be directed to organic matterapplication to increase soil carbon content, CEC, and nutrientavailability. Fertilizer recommendation for wetland rice and severalupland crops is suggested based on the soil properties.
THE UTILIZING OF ZEOLITE MINERALS AS AGRICULTURE SOIL CONDITIONER IN RELATION TO ITS STANDARIZATION AND INCREASING FOOD CROP Al-Jabri, M.
Jurnal Zeolit Indonesia Vol 9, No 1 (2010)
Publisher : Jurnal Zeolit Indonesia

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Abstract

The used of zeolite mineral as soil ameliorant on agricultural had been known since long time ago. Cation exchange capacity (CEC) of zeolite is ≥ 100 cmol(+) kg-1 which regulated on SNI No 13-3494 1994 is a determining quality of zeolite test. However, it is very reasonable to be revised. There are several reason why determining CEC of zeolite on SNI No 13- 3494-1994 must to be revised, because there is an error as possible as on determining CEC of soil. The research aimed to study the measurement of CEC zeolite for agricultural which conducted on five laboratories were (1) Bogor Agricultural University by using stirring (shaking)-sentrifusi decantation methods, (2) Service Soil Laboratory at Indonesian Soil Research Institute by using percolation method that measured by calorimetric auto analyzer, (3) Soil Laboratory at Indonesian Soil Research Institute by using percolation method that measured by spectrometry, (4) PT. Sucofindo, and (5) Research and Development Centre for Mineral and Coal Technology by using percolation method. The result from quality test of CEC zeolite A and zeolite B from five laboratories was significant different, because the difference procedures of the method such as zeolite quality (grade and types), zeolite fineness, and ratio of zeolite to ammonium acetate solution. The criteria of CEC zeolite for agricultural on SNI recommended to be revised on five types are (1) ≥ 100 cmol(+) kg-1(class A); 100 - 80 cmol(+) kg-1 (class B); 80 – 60 cmol(+) kg-1 (class C), 60 – 40 cmol(+) kg-1 (class D), < 40 cmol(+) kg-1 (class E). The result from test of zeolite effectiveness on green house condition showed that distributing of zeolite soil ameliorant could improving grain yield pithy about 19,41% with the average weight of grain pithy with zeolite are 73,30 gram/pot, while without zeolite are 61,22 gram/pot. Giving the combination of ZKK with manure increasing higher the dry weight loose maize is 8,44 tons/ha than without giving the ZKK is 5,65 tons/ha.
OVERCOME LAND DEGRADATION WITH SOIL AMELIORANT APPLICATION (STUDY OF FARMER PERCEPTIONS IN MALANG, EAST JAVA) Al-Jabri, M.
Jurnal Zeolit Indonesia Vol 7, No 1 (2008)
Publisher : Jurnal Zeolit Indonesia

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Abstract

Improving the quality of soils degradation can be achieved using the soil ameloirant (i. e. Zeolite, manure, compost, etc.), conservation farming systems, organic management, system balanced fertilization specific location, and efficiency of water use. This study aimed to determine: (1) the type of soil ameloirant that is still used by farmers, sources of information, and its use of doses, (2) constraints and benefit of use, (3) fertilizer efficiency, and (4) development opportunities. This study conducted by survey method that is structured interview included: farmer characteristics, identification, and soil ameloirant development prospects in the future. Identification of soil ameloirant, such as: type of soil ameloirant used by farmers, sources of information, applications, the impact of the use, benefits and constraints of use. The results showed that: the distribution age of respondent ≤ 55 years (80.7%) and > 55 years (19.3%). Dissemination through counseling, pilot project on farmers land in order to developing the confidence of farmers will benefit and importance of the use soil ameloirant to repair land degradation, increasing productivity, and agricultural production. The soil ameloirant have been used by 24% of respondents farmers is zeolite granules (Agro-88) and dolomite; measurement of soil ameloirant for rice field: 500 kg of zeolit /ha and 577 kg dolomite/ha; garden: 219 kg zeolite/ha and 409 kg dolomite/ ha; mixedgarden: 600 kg of zeolit/ha and 143 kg dolomite/ha. Soil ameloirant benefits is for increasing the production: paddys, corns, and vegetables (cauliflower, peppers, tomatoes) around 10-30%, improving the soil fertility and reducing dosage of urea fertilizer as much as 15-30% and SP-36 as much as 30%.
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