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INDONESIA
Jurnal Tanah dan Iklim
Published by Balai Besar Penelitian dan Pengembangan Sumberdaya lahan Pertanian
ISSN : 14107244     EISSN : 27227723     DOI : http://dx.doi.org/10.21082/jti.v44n1.2020.19-29
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal TANAH dan IKLIM memuat hasil-hasil penelitian bidang tanah dan iklim dari para peneliti baik dari dalam maupun dari luar Balai Besar Litbang Sumberdaya Lahan Pertanian. Jurnal ini juga dapat memuat informasi singkat yang berisi tulisan mengenai teknik dan peralatan baru ataupun hasil sementara penelitian tanah dan iklim.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 4 Documents
 1 
Search results for , issue "No 22 (2004): Desember 2004" : 4 Documents clear
MICROMORPHOLOGICAL CHARACTERISTICS OF VOLCANIC SOILS IN BANTEN AREA I, FAUZI A.; ZAUYAH, S.; STOOPS, G.
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 22 (2004): Desember 2004
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n22.2004.%p

Abstract

Four pedons derived from acid and intermediary tuffs in Banten area had been described and sampled for a pedogenesis study. Micromorphological features related to pedogenesis processes were observed through thin sections of some representative horizons using a petrographic microscope. Mineralogical, chemical, and physical data were also used to support interpretation. The results showed that microstructures of soils developed on intermediary tuff had more porous structures and homogenous finemass than those on acid tuff. Groundmass of the soils on intermediary tuff was characterized by dominant fine mass yellowish to reddish brown color, andwith few opaque and weathered minerals. Whereas the soils on the acid tuff had light to strong brown finemass and many coarse quartz particles. Pedofeatures were found as clay coatings on pores especially in the soils with clear dry season climate. Pumice particles and some fresh plagioclase in the surface horizons of the soils was predicted to come from Krakatau ash of the eruption in 1883. Generally, micromorphological, mineralogical,chemical, and physical characteristics of the soils indicated that weathering process and soil genesis more intensive on the intermediary tuff than on the acid tuff. This research is expected to give more knowledge about micromorphological characteristics and pedogenesis processes of the volcanic soils and the influence of Krakatau ash in Banten area.
EFFECT OF AMELIORATION AND K FERTILIZATION ON POTASSIUM Q-I RELATIONSHIP PARAMETERS ON ACID MINERAL SOIL SUBIKSA, I GUSTI MADE; ADININGSIH, J SRI; SUDARSONO, .; SUBIHAM, SUPANDI
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 22 (2004): Desember 2004
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n22.2004.%p

Abstract

Relationship between cations adsorbed in solid phase (Qfactor) and those in soil solution (I-factor) can be expressed by quantity-intensity (Q-I) relationship curve of K that was introduced by Beckett. A laboratory experiment to study the effect of amelioration and K fertilization on K Q-I parameters was carried out on three soil families of acid upland mineral soil from Cigudeg, Kentrong, and Papanrejo. The experiment was arranged using completely randomized design with 2 factors. The first factor was three kinds of ameliorant and the second factor was three levels of K fertilization. The result suggested that amelioration with dolomite and steel slag increased K buffering capacity (PBCK) due to the increase in cation exchange capacity (CEC) and Ca and Mg concentration of the soil solution.Conversely, amelioration decreased equilibrium activity ratio of K (ARKe) due to alteration of K-Ca?Mg equilibrium. Amelioration, however, did not affect labile-K, except for Cigudeg soil. The application of K fertilizer increased K availability in terms of ARKe and labile-K. Those three soil families performed different changes in K availability effect, where soil with higher CEC showed smaller change than the lower one, also tended todecrease K buffering capasity (PBCK). The implication of this study is amelioration practice must be followed by K fertilization in order to avoid plant deficiency in K nutrient.
P Extraction Method and Fertilizer Requirement of Soybean on Typic Kandiudox in Papanrejo, Lampung DEDI NURSYAMSI; M.T SUTRIADI; UNDANG KURNIA
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 22 (2004): Desember 2004
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n22.2004.%p

Abstract

Field experiment to select extraction method, determine nutrient availability class, and estimate P fertilizer recommendation for soybean on Typic Kandiudox was conducted in Papanrejo, Lampung. The experiment applied single location approach with two steps of activities. The first step conducted in dry season 2002 was to make artificial soil P status by adding P: 0X (very low), 1/4X (low), 1/2X (medium), 3/4X (high), and X (very high status), where X was amount of P required to attain 0,2 μg P l-1 in soil solution. The second step, conducted in the following season (wet season 2002/2003), was P treatment in each artificial soil P status by using P fertilizer: 0, 20, 40, 80, and 160 kg P ha-1 from SP-36 with 3 replicates. The result showed that Mehlich, Olsen, Truogh, Bray 1, and Bray 2 could be used to estimate P fertilizer requirement for soybean on Typic Kandiudox. Among the extractions, Bray 1 was the best. The levels of soil P availability extracted using Bray 1 were classified into: low (<8 ppm P205), medium (8–20 ppm P205), and high (>20 ppm P2O5), while soil P availability extracted using Bray 2 were <12, 12–36, and >36 ppm P2O5 for low, medium, and high classes, respectively. P fertilizer recommendation for soybean on Typic Kandiudox with low, medium, and high soil P availability classes was 58, 45, and 16 kg P ha-1 or equal to 355, 279, and 97 kg SP-36 ha-1, respectively.
Properties of Low Activity Clay Soils from South Kalimantan BAMBANG HENDRO PRASETYO; NATA SUHARTA
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 22 (2004): Desember 2004
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n22.2004.%p

Abstract

Soils with low activity clay is one of the problem soils in Indonesia. These soils consisted of Ultisols, Oxisols, Alfisols, and some Inceptisols, occupied about 34.5% of total Indonesian land, distributed in almost all Indonesian islands, and derived from various parent materials. To evaluate the properties of low activity clay soils, 6 pedons of Oxisols and Inceptisols, derived from clay stone, andesitic rock, ultra mafic rock and lime stone,from South Kalimantan were studied both in the field and in the laboratory. The analyses consisted of texture, organic carbon content, pH (H2O and KCl), potential P and K, available P, P retention, exchangeable bases and acidity, cation exchange capacity and mineralogical composition. The results showed that low activity clay dominated by opaque and quartz as primarilyresistant mineral. Clay fraction was dominated by kaolinite, and to a lesser extent goethite, hematite, and gibbsite were also present. The mineralogical composition of the low activity soils indicated a low natural potential nutrient reserve and an advanced stage of soil weathering. Chemically, the low activity clay soils were acid, low content of bases, low cation exchange capacity, high P retention, and some of them show a high aluminum saturation. A complete fertilizer application is necessary for a sustainable use. Although soil fertility constraints on the low activity clay soils can be corrected by liming and appropriate fertilization, socioeconomic condition of the local farmer is another constraint.

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