Universitas Sebelas Maret Surakarta, Fakultas Pertanian UNS: Journal Systems
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The Use of Banana Corm Extract and Phosphate Rock to Increase Available-P in Alfisol
Get PDFThe aim of this research is to study the approprite formula and applied method of banana corm and phosphate rock on available-P in Alfisols. The research was arranged in factorial completely randomized design with 3 factors. The first factor is the dosage of banana corm extract, which is consisted of: E1 = 100 ml of banana corm extract, E2 = 200 ml of banana corm extract, and E3 = 300 ml of banana corm extract. The second factor is the dosage of the phosphate rock which is consisted of B1 = 100 gr of phosphate rock, B2 = 200 gr phosphate rock, and B3 = 300 gr of phosphate rock. The third factor is application method, which is consisted of M1 = directly applied into the soil. M2 = incubated before applied into the soil. The observation of soil includes: soil pH, soil organic matter content, cation exchange capacity, total-N, total-P, available-P and the population of phosphate solubilizing bacteria. Result shows that available-P in the Alfisols is very low. The interaction amongs the treatment significantly affect the population of phosphate solubilizing bacteria. Banana corm extract and phosphate rock applied directly into the soil increase soil pH
Pengaruh Dosis Inokulum Azolla, Fosfat Alam dan Abu Sekam terhadap Sifat Fisika Tanah dan Hasil Padi pada Alfisols
Get PDFTITLE : THE EFFECT OF AZOLLA INOCULUM, PHOSPHATE ROCK AND RICE HULL ASH DOSAGES ON RICE YIELD AND SOIL PHYSICAL OF ALFISOLS. The use of agrochemical materials to increase rice yield in a long term may cause soil, environment damages and have low productivity. One of the ways to increase the rice yield and improve soil health is organic rice cultivation by applaying organic fertilizer inputs derived from azolla. This research objective is to find out the effect of azolla, phosphate rock and husk ash dosages, as well as the best combination of azolla, rock phosphate and husk ash which is best for soil physical and yield of rice on Alfisols. The experimental design used was Completely Randomized Design (CRD), consists of 5 treatment and repeated 5 times. Data analysis using the F test (Fisher test) with 95% level confidence. Variables measured were field capacity, maximum moisture content, bulk density, aggregate stability, plant height, dry weight of harvest rice and milled rice. The results showed the treatment combination of azolla 250 g m-2, rock phosphate equivalent with 150 kgha-1 SP-36 and husk ash equivalent with 100 kgha-1 KCl give the highest aggregate stability
Aliran Permukaan, Erosi dan Hara Sedimen Akibat Tindakan Konservasi Tanah Vegetatif pada Kelapa Sawit
Get PDFTitle : Runoff, Erosion and Nutrient Sediment due Vegetative Soil Conservation Applied on Oil Palm Plantation. Land cover crops play an important role in influencing erosion. Cover crops provide protection against the destruction of soil aggregates by rain and runoff. This research aims to study the effectiveness of vegetation as soil conservation in controlling erosion and runoff. This study was a field experiment on erosion plots measuring 10 m x 5 m were arranged in Split Plot design with replications as blocks, consists of a combination of two factors: the age of the oil palm and slope as the first factor, and vegetative soil conservation techniques as a second factor. The results showed the soil conservation techniques in oil palm cultivation can reduce the rate of surface runoff, soil erosion and nutrient loss. Soil conservation with upland rice planted with soybean sequence + strip Mucuna bracteata (T3) most effectively reduce runoff and prevent soil erosion and nutrient loss
Penentuan Indeks Kualitas Tanah Agroforestri Berdasarkan Sifat Kimia Tanah di Sub-DAS Bengawan Solo Hulu Wonogiri
Get PDFTitle : Determination of Soil Quality Index Based on Soil Chemical Properties at The Upstream of Bengawan Solo River Basin Wonogiri. Land conversion extended to the upper of the watershed for residential and agricultural so soil’s ability is decreased to support the soil quality. To solve these problems, in the region upstream of Bengawan Solo, enforced by Agroforestry plantings. Research carried out at the upstream of Bengawan Solo Wonogiri and Laboratory of Chemistry and Fertility of Soil Faculty of Agriculture, Sebelas Maret University Surakarta, in June 2013 until March 2014. Research used a survey method by descriptive and exploratory. Determination of the location of the site sample is done by a stratified random sampling based onland map unit. Sampling was done by a purposive sampling method. The soil quality index is determined by summing the scores for each variable which has selected from Principal Component Analysis (PCA), and then it multiplied by the weight index. The result of the study show that the soil quality of Agroforestry in the upstream of Bengawan Solo Wonogiri based on the chemical properties of the soil is low. The value of soil quality index in the secondary forest is 2.6. While in the Agrosilvopastoral is 2.3 and in the Agrisilviculture is 2.1, which are lower than the secondary forest. Whereas in the Silvopastoral is 3.0, which is higher than the secondary forest
Organic Fertilizer from Silk Tree litter (Albizia falcataria L.) to Enhance Magnesium Availability for Paddy (Oryza sativa L.) in Alfisol
Get PDFThe research had been done in Pereng, Mojogedang, Karanganyar. The aim of the research is to know the influence of organic fertilizer enrichment with the addition of Silk Tree litter (Albizia falcataria L.) to improve the availability and the uptake of Mg on the paddy (Oryza sativa L.) fields in Alfisol. The research used Complete Randomized Block Design (CRBD) with two factors that were dose treatments and cultivation systems. The data analysis used F test, Kruskal-Wallis test, DMRT test, Mood Median test, and correlation test at the 5% significance level. The results of the research showed that the availability and uptake of Mg in conventional cultivation system are higher than the SRI cultivation system. Mg uptake in conventional cultivation systems amount to 0.015 g/plant. The highest Mg availability can be achieved in the D6B1 treatment (50% organic fertilizer + 100% dose recommendation + Silk Tree litter amount 15% of the weight organic fertilizer) amount to 2.34 cmol(+)/kg. Organic fertilizer with the addition of Silk Tree litter cannot enrich the availability and uptake of Mg, but conventional cultivation systems can influence the availability and uptake of Mg. Conventional cultivation systems influencing the availability and uptake of Mg are higher than the SRI cultivation system
Dampak Abu Vulkanik Erupsi Gunung Kelud dan Pupuk Kandang terhadap Ketersediaan dan Serapan Magnesium Tanaman Jagung di Tanah Alfisol
Get PDFThe impact of Volcanic Ash of Kelud Eruption and Manure on Availability and Magnesium Uptake of Corn in Alfisols. Impact of fresh volcanic ash on soil fertility is rarely studied mainly on nutrient availability, uptake and on plant growth. Fresh volcanic ash is primary mineral that takes time and agents such as organic materials to mineralized before it contribute to soil fertility. This study aimed to study the effect of the thickness of fresh volcanic ash of Kelud Mountain and dosage of manure on availability and uptake of Magnesium and chlorophyll content of corn in Alfisol. This is greenhouse experiment arranged in factorial completely randomized design with two treatment. The first factor is the thickness of volcanic ash: 0, 2. 4, and 6 cm, and the second factor is the dosage of manure: 0, 2 and 4 tonha-1, each treatment combination was repeated 3 times. Variables observed include exchangable-Mg , Mg uptake, and chlorophyll content of corn. The results showed that there is no interaction effect of volcanic ash and manure on exchangable-Mg, Mg uptake and chlorophyll content of corn. This proved that they affect nutrient availability in different ways. Both volcanic ash of Kelud eruptionas as well as manure increase exchangable-Mg, especially at 6 cm thickness of volcanic ash treatment, Mg-uptake and chlorophyll content of corn leaf independently. There was a relationship between exchangable-Mg and chlorophyll content in the leaves
Strategi Konservasi Sumberdaya Air di Desa Regunung, Kecamatan Tengaran, Kabupaten Semarang
Get PDFTitle : The Strategy of Water Resources Conservation in Regunung Village, Tengaran Subdistrict, Semarang District. Water resource conservation is a required activity to do in in Regunung Village, Tengaran Subdistrict, Semarang District because this area is potentially dried and has often experienced the lack of clean water even though the water resource conservation is vegetatively conducted. The resecarh is conducted from June to August 2014. The purpose of this research is to analyze the strategy of water resource conservation in Regunung Village by analyze the social-economy condition and physical condition. The method used to gain data is obeservation and direct measuring including vegetation analysis, the data analysis of the citra condition of the changing of the land; the crossed tabulation analysis and Marcov Chain for the projection of the cahinging of the land use; the technique of interview using questioners to know the participation of community; the secondary data analysis, FGD to determine the strategy of water resource conservation with SWOT analysis. The population of this research is the people of Regunung Village. Respondent is purposively determined by the number of respondent based on Slovin formula, while the FGD informant is purposively determined. The result of the research shows that the condition of Regunung Village is located at discharged area CAT Salatiga with the various level of elevation and the type of soil is latosol. The changing of the use of land happening since 1991 - 2014. The vegetation condition shows that the planting method used in Regunung Village is Agroforestry. The index of diversity for three in Regunung Village is at the low level (0,8). The result of the social-economy condition research shows that the majority people's income is less than Rp. 1.000.000,00 and the level of participation is on placation level. The Water Resource Conservation Strategy suggested is the diversification strateg
Kajian Penambahan Bakteri Asam Laktat dan Kompos Tithonia Diversifolia terhadap Penurunan Toksisitas Al pada Berbagai Waktu Inkubasi di Ultisol Jumantono
Get PDFTittle : The Examine of Adding Lactic Acid Bacteria and Tithonia Diversifolia Compost on Decreasing Al Toxicity The Several of Time Incubation in Ultisol Jumantono. The purpose of this experiment is to know decreasing of Al toxicity with adding Lactic Acid Bacteria and Tithonia diversifolia compost on ultisols. The research was conducted in the Green House and Soil Chemistry Fertility Laboratory of Agriculture Faculty of Sebelas Maret University Surakarta.This research is designed experimental and using Completely Randomize Design (CRD) by single experiment, consist of 22 treatments with three replications, combination of Tithonia : 0 ton/ha, 2 ton/ha, and 3 ton/ha, Lactic Acid Bacteria : 0 %, 10 % and 20 %, and then SP-36 fertilizer : 0 kg/ha, 50 kg/ha, 100 kg/ha and 150 kg/ha. Variables observation are primary variables (Aldd, Al active and Al total), and secondary variables (pH, organic mater, available P). Statisticals analysis used F-Test, Kruskal-Wallis Test, Correlation Test, Mood Median Test and DMRT 5 %. This experiment showed that adding of Lactic Acid Bacteria, Tithonia diversifolia compost and P fertilizer are have significant effect to Aldd, active Al and Al total in Ultisols. The time that decreas Aldd and Al active significanly is 30 inkubation, as Al total to low is 50 inkubation. The best experiment to decreas Al is Tithonia 2 ton/ha + BAL 20% from compost + SP-36 fertilizer 100 kg/ha
Soil Fertility Status of Organic Paddy Experiment
Get PDFThe study aims to determine fertility status of the soil after organic paddy experiments using kinds and doses of organic fertilizers. Experiment was conducted at greenhouse laboratory in Faculty of Agriculture Sebelas Maret University Surakarta. Experimental design used completely randomized design with 9 kinds of treatment was replicated 3 times. Experiments were the use of cow manure, Azolla fertilizer, Azolla inoculum and its combinations that are based on fulfilling nutrient requirements of 120 kg N ha-1.Result shows that the use of cow manure, Azolla fertilizers and Azolla inoculum had no effect on changes of soil fertility status. Soil fertility status was not significantly correlated with cow manure (0,16ns), Azolla fertilizer (0,26ns) and Azolla inoculum (0,16ns). Average of final soil fertility status included fertile category, which was similar as the initial soil fertility status. Average of final soil properties of treatment but nevertheless was relatively higher than in no treatment, indicating the use of cow manure, Azolla fertilizer, Azolla inoculum and its combinations had greater impact to soil properties. Cow manure despite increased available K2O and dry grain, but it did not significantly increase the soil fertility status from fertile to very fertile. This was presumably due to the relatively short experiment period, only one planting season had not given significant effect to soil properties. Implication of this study is the use of cow manure, Azolla fertilizer, Azolla inoculum and its combinations although did not increase the soil fertility status but could maintain soil fertility status as the initial conditions before planting
Pengaruh Pupuk Organik Berbasis Azolla, Fosfat Alam dan Abu Sekam terhadap Hasil Padi dan Sifat Kimia Tanah Alfisol
Get PDFEffect of Azolla Based - Organic Fertilizer, Rock Phosphate and Rice Hull Ash on Rice Yield and Chemical Properties of Alfisols. The application of chemical fertilizer for long time may adverse soil environment. Organic agriculture, for example combination use of azolla based-organic fertilizer, phosphate rock and rice hull ash, was one of ways that able to recover it. Research was conducted in Sukosari, Jumantono, Karanganyar while soi chemical properties analysis was analysed in Soil Chemistry and Fertility Laboratory, Fac. of Agriculture, Sebelas Maret University April to November 2013. Research design used was RAKL with 5 treatments, each repeated 5 times. The treatments applied were P0 (control), P1 ( azola inoculum dosage 250 g/m2 + phosphate rock + rice hull ash equal to 150 kg/ha KCl), P2 (azola inoculum dosage 500 g/m2 + phosphate rock equal to 150kg/ha, SP-36 + rice hull ash equal to 100 kg/ha KCl), P3 (manure dosage of 5 ton/ha),P4 (Urea 250 kg/ha + SP-36 150 kg/ha + KCl 100 kg/ha). Data analysed statistically by F test (Fisher test) with level of confident 95% followed by DMRT (Duncan Multiple Range Test) if any significant differences. The result showed that the treatment combination of azolla, phosphate rock and rice hull ash increase soil organic matter content, cation exchange capacity, available-P and exchangeable-K as well as rice yield ( (at harvest-dry grain weight and milled-dry grain weight)