Perkebunan dan Lahan Tropika
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PENGARUH EKSTRAK FENOLIK ANTIFOTOOKSIDAN DAUN KESUM (Polygonum minus) TERHADAP STABILITAS EMULSI PADA MINYAK RBDPO (REFINED BLEACHED DEODORIZED PALM OIL ) DALAM AIR
Full text linkThis study aimed to obtain the type of solvent that has optimal activity antiphotooxidaion to inhibit photooxidation RBDPO oil, and determine the effect of phenolic extracts of the kesum leaf on RBDPO oil emulsion stability.The study consisted of two steps. The first steps make kesum leaf extract with methanol, n-hexane fraction, ethyl acetate fraction, the fraction of methanol and methanol-water fraction.Each extract with a concentration of 1000 ppm RBDPO emulsified into the oil, then proceed with testing antiphotooxidation activity and total phenol content using a completely randomized design consisting of a treatment factor is the type of preparation (S) consisting of methanol extract (s1), hexane fraction (s2), ethyl acetate fraction (s3), methanol fraction (s4), methanol-water fraction (s5) is repeated three times.Observation variables involved testing antiphotooxidation activity and total phenol content.The second steps is the preparation antiphotooxidant best on first steps, the extract concentration (0, 500, 1000, 1500, 2000, 2500 and 3000 ppm)emulsified into the RBDPO oil, then proceed with testing antiphotooxidation activity and emulsion stability on RBDPO oilusing regression correlation, each treatment was repeated three times.The results of first steps study is the best type of preparation with methanol extracts with antiphotooxidation activity of 47.42% and total phenol of 22.03 mg GAE/g.The results of second steps study showed that increasing the concentration of the methanol extract significantly affected the antiphotoxidantion activity while methanol extract concentration no significantly effect on the stability of emulsion RBDPO in water.Emulsion stability was measured on days 0, 1, 2, 3, and showed no significantly effect.Emulsion stability did not change until three day, showed that the type of surfactant Tween 20 were used effectively in the system RBDPO palm oil emulsion in water
Hubungan Karakteristik Biologis Gambut dengan Penyakit Busuk Batang yang Disebabkan Ganoderma pada Kelapa Sawit
Full text linkThe relationship of biological properties of peat with oil palm basal stem rot (BSR) caused by Ganoderma. Indonesia as the largest palm oil producer in the world, has the large percentage of oil palm on peatland. The serious problems of cultivating oil palm on peatland is the presence of BSR disease caused by Ganoderma. There are no effective methods to control the spread of this disease. Biological control is an environmentally friendly alternative method focus, but on peatland, the development of this method is constrained by lack of information about the effect of biological environmental factors. This study aims to determine the effect of the biological propertiess of peat on the intensity of Ganoderma attacks on oil palm. The relationship between the intensity of Ganoderma attacks and biological properties of peat was carried out by correlation test. The correlation analysis showed that the biological properties of peat has not correlated with the Ganoderma attacks, except Summed Dominant Ratio of vegetation which tends to positively correlate to the number of Ganoderma antagonists. These results indicate that peatland vegetation management by maintaining the diversity of vegetation around oil palm can help reduce Ganoderma attacks.
STUDI KARAKTERISTIK SUB DAERAH ALIRAN SUNGAI JETAK PADA DAERAH ALIRAN SUNGAI MELAWI KECAMATAN DEDAI KABUPATEN SINTANG
Full text linkJetak watersheds is already in a critical state and undergo changes caused by industrial waste, household. This research aimed to study the characteristics of the Jetak watershed. Jetak sub watershed has an area of 18734.27 hectares located in District Dedai Sintang. This study was conducted at two observation points that were on the downstream and upstream conducted on 6 consecutive days and subsequently analyzed in the laboratory TSS Land Quality and Health Faculty of Agriculture, University of Tanjungpura. The results showed that the pattern of Jetak’s river pipeline that was dendritic pattern and it shaped like a bird feather. IKD value was 0.0143 km / km2 and included the low category while the transverse profile of the river at the downstream and the upstream parabolic square shaped. Orde the river consisted of 2 ordes and water quality with an average pH value in the upstream was 6.01 and on the downstream was 6.46, the temperature on the upstream side had an average value was 27,90C and downstream has an average value was 27,70C, the brightness on the upstream side has an average value was 75.5 cm and the downstream section has an average value was 96.08 cm. Flow rate at the downstream has an average value was 7.418 m3 / sec and the upstream section was 0.790 m3 / sec. Discharge curve (r) of downstream was 0.084 and upstream was 0.746 with R2 downstream was 0,007 and the upstream was 0.557. The concentration of suspended sediment downstream had an average vaue was 9.5 mg / liter and upstream was 8.33 mg / liter. Downstream sediment discharge has an average was 6.13 tons / day and upstream was 0.57 tons / day. Arch sediment downstream (r) is 0.864 with R2 was 0.746 and on the upstream side (r) was 0.031 with R2 was 0.001.
EVALUASI KESESUAIAN LAHAN UNTUK TANAMAN KELAPA SAWIT DI DESA ENGKASAN KECAMATAN TAYAN HULU KABUPATEN SANGGAU
Full text linkThis study aims to determine the level/grade suitability of land for oil palm plantations and attempt to provide management recommendations. Results of land evaluation, whether the results obtained from the field and the results of laboratory analysis results will provide information and guidance necessary land use and finally value of production expectations increased. The research was conducted in the village of Engkasan Tayan Hulu subdistrict Sanggau district with an area of 100 hectares. Analysis of soil samples carried out in the Laboratory of Chemistry and Soil Fertility Faculty of Agriculture, University Tanjungpura Pontianak. The study started from April 2015 until the end of April 2016. The research was conducted by survey method using a grid system. Implementation of the research include: 1) Preparation, consisting of cartography topography of the site of research, collecting secondary data research sites and tools and materials used, 2) field observations, consisting of drilling and profiling of land, 3) Analysis soil samples in the laboratory, 4) Analysis and compilation of data, which consists of determining ratings soil chemical properties, determining the nomenclature of land, determination of land suitability classes, determination of the limiting factors of land, 5) Interpretation of the data and presenting the results, the data obtained in the field associated with the results of the analysis in the laboratory.The interpretation of field data and analysis in the laboratory showed that among the sites there are 4 Soil Mapping Unit, but it has one type of soil and is classified into the Order Ultisol, Sub-order Udik, Great-group Kandiudults, Sub-order Typic Kandiudults with epipedon ocric and horizon diagnostic kandik. Soil Mapping Unit 1 has a land suitability classes S3-n (nutrient status) actual and potential land suitability classes S1, Soil Mapping Unit 2 has a land suitability classes S3-ns (slope and nutrient status) actual and potential land suitability classes S1, Soil Mapping Unit 3 has the actual land suitability classes N1-s (slope). N1-s (slope) can not do so any improvement potential land suitability classes Soil Mapping Unit remain N1-s (slope) 3 and Soil Mapping Unit 4 has the actual land suitability classes N2-s (slope). N2-s (slope) can not do so any improvement potential land suitability classes Soil Mapping Unit remain N2-s (slope). Recommended management consists of organic materials recommendation, liming, fertilizing and terracing. The results of the lime requirement calculations amounted to 0.5344 ton / mgCa (CO3) 2 / ha, the result of calculation of P and K fertilizer demand respectively 159.8 kg / ha SP36 and 130 kg / ha KCl
KADAR HARA NPK TANAMAN KELAPA SAWIT PADA BERBAGAI TINGKAT KEMATANGAN TANAH GAMBUT DI PERKEBUNAN KELAPA SAWIT PT. PENITI SUNGAI PURUN KABUPATEN MEMPAWAH
No full textNutrient levels is the process to determine the present nutrient content in tissue plant. Nutrient levels obtained through field survey and nutrient analysis in the laboratory. This research aims to determine levels of N, P and K as well as recommend the use of N, P, and K for oil palm plants so as to increase the production of palm oil. This research was conducted at PT. Peniti Sungai Purun, MempawahRegency. The analysis results showed that the levels of N, P, and K on all blocks belonging to deficiency until optimum. In each block, the dose recommend of fertilizer N, P, and K to block G50 (1,73 kg urea/tree/year, 1,50 kg Rock Phospate/tree/4 times/year, and 2,50 kg KCl/tree/year) Blocks H34 (3,00 kg urea/tree/year, 3,50 kg Rock Phospate/tree/year, and 3,50 kg KCl/tree/year). Block I26 (1,73 kg urea/tree/year, 1,50 kg Rock Phospate/tree/year, and 2,50 kg KCl/tree/year). Block J26 (3,00 kg urea/tree/year, 3,50 kg Rock Phospate/tree/ year, and 3,50 kg KCl/tree/year). This dosage recommendations are used to increase the production of oil palm plants in PT. Peniti Sungai Purun.Keywords : Nutrient levels, recommendation of fertilization
KEEFEKTIFAN BEBERAPA HERBISIDA CAMPURAN DALAM MENGENDALIKAN GULMA UMUM PERKEBUNAN KELAPA SAWIT
Full text linkHerbicide mixing technology is an opportunity to improve efficiency and control weeds. This study aimed to develop the effectiveness of a mixed herbicide (tank mix) between the active ingredient formulations of tiafenacil, glyphosate, methyl metsulfuron, and paraquat dichloride in controlling common oil palm weeds. The research was carried out for approximately 3 months, from January to March 2021, in oil palm plantations. The research used was a randomized block design with 9 treatments and 4 replications. Herbicide application using a knapsack sprayer and a red nozzle. Spraying is carried out on weeds in the oil palm weed circle. Vegetation analysis was carried out before the application of herbicides, the percentage of mortality was observed 3,7, 14, 21, and 30 days after spraying and weed regrowth was carried out 30, 45, and 60 days after spraying. The results showed that the paraquat mixture of tiafenacil was able to increase the effectiveness of the herbicide against common weeds compared to the single herbicide tiafenacil at doses of 2 l/ha and 4 l/ha based on mortality. The paraquat mixture in methyl metsulfuron was able to increase the effectiveness of the herbicide against common weeds compared to the single herbicide methyl metsulfuron based on its mortality. The single herbicide tiafenacil dose of 2 l/ha was able to suppress the dry weight of Ottochloa sp better than the single herbicide tiafenacil dose of 4 l/ha. The mixture of methyl metsulfuron in tiafenacil was able to suppress the dry weight of Asystasia sp better than the single herbicide tiafenacil at a dose of 2 l/ha
PENGARUH CUKA (ASAP CAIR) TEMPURUNG KELAPA TERHADAP P. palmivora PENYEBAB PENYAKIT BUSUK BUAH PADA KAKAO
Full text linkCocoa pod rot disease is one of the important diseases on cocoa crop because they cause substantial losses in crop yields. One method to control spoilage of pod using vinegar (Liquid Smoke) coconut shell. This research aims to obtain a concentration of Vinegar (Liquid Smoke) to suppress the activity of P. pamivora. The study lasted for three months in the laboratory of plant disease Faculty of Agriculture University of Tanjungpura. The method used was Complete Random Design (CRD) with 6 treatment 0%, 5%, 10%, 20%, 40% and fungicides mancozeb 80% active material based on repeated 3 times. The observed parameters is the number of patches and spots, long observations began on the fifth day after incubation. The research results showed that rotten pod disease control using Wood Vinegar is effective at concentrations of 5% and 10% are able to inhibit the activity of P. palmivora.Keywords: Cocoa pod, Vinegar (Asap Cair) Coconut Shell, P. palmivor
PREDIKSI EROSI DENGAN METODE USLE DI PERKEBUNAN KELAPA SAWIT PTPN XIII GUNUNG MELIAU KECAMATAN MELIAU KABUPATEN SANGGAU
Full text linkThe research location that is in Afdeling 3 PTPN XIII Mount Meliau Meliau District of Sanggau. This study aims to predict the magnitude of the erosion and the amount of erosion that can still be tolerated. The method used in this study was calculated using the USLE by knowing the value of the R factor, K, L, S, C and P which are the root causes of erosion in the area of oil palm plantations in the study sites. Further erosion of values that can be tolerated in comparison to the predicted value erosion. Having compared the predictive value of the erosion of the value erosion that can be tolerated, it is necessary to do the conservation measures recommended.The results of this study found that the rate of erosion prediction (A) reached 140.16 to 9737.28 tons / ha / year. Value erosion prediction that can be tolerated (Etol) ranged from 48.22 to 32.13 tonnes / ha / year. In Ult4 land value (A) is greater than the value of Etol with moderate erosion hazard level, while on land Ult18, Ult24, Ult36 value (A) is greater than the value of Etol with severe erosion hazard level. Planning and prevention of erosion is the appropriate planting bench terracing of good construction. Special to land Ult4 and Ult18 can in recommend also with planting LCC and making the porch kontruksi was
STUDI SIFAT FISIK TANAH PADA KEBUN KARET DAN KELAPA SAWIT DI DESA RASAN KECAMATAN NGABANG KABUPATEN LANDAK
Full text linkThis study aimed to compare the physical properties of soil on rubber and oil palm plantation in the village of the District Rasan Ngabang Porcupine District. Observation point soil samples taken at rubber plantations and palm oil to a depth of 0-30 cm and 30-60 cm. Parameter observations used in this study consists of the characteristic physical properties of the soil that is the color of the soil, soil structure, soil texture, bulk density soil, the water content of field capacity, soil porosity, permeability, stability of soil aggregates, content of organic C, N-total , C / N ratio, and soil reaction (pH).The observation of the color of the soil in the field on rubber plantations and palm oil is known that, there are some differences and similarities at each point of observation well was at a depth of 0-30 cm and 30-60 cm. The structure of a rubber garden soil to a depth of 0-30 cm and 30-60 cm blocky rounded grains (granular) while in the oil palm plantation with a depth of 0-30 cm and 30-60 cm soil structure is blocky angular. While the texture of the soil at a depth of 0-30 cm rubber plantations and 30-60 cm termaksuk sandy clay loam and clayey loam soil texture while the oil palm plantation with a depth of 0-30 cm and 30-60 cm including sandy clay loam, clay and loam clayey.T test results on soil bulk density rubber plantations and palm oil at a depth of 0-30 cm showed significantly different while the depth of 30-60 cm are not significantly different, while the t-test, field capacity moisture content in the rubber plantations and palm oil at a depth of 0-30 cm showed significantly different at a depth of 30-60 cm while not significantly different. The results of the t test soil porosity rubber plantations and palm oil at a depth of 0-30 cm and 30-60 cm are not significantly different. While the t-test, soil permeability in rubber plantations and palm oil to a depth of 0-30 cm and 30-60 cm showed no significant difference.Soil aggregate stability was higher in oil palm plantations over rubber either the depth of 0-30 cm and 30-60 cm. While the results of the analysis of organic materials in the rubber plantations and palm oil is low to very low both at a depth of 0-30 cm and 30-60 cm, N-total is low to very low, and C / N ratio is low and soil reaction ( pH) sour to very sour
PEMANFAATAN KOMPOS TANDAN KOSONG KELAPA SAWIT (TKKS) DENGAN BAKTERI SELULOLITIK DAN LIGOLITIK SERTA NPK TERHADAP PERTUMBUHAN BIBIT KAKAO (Theobroma cacao L.)
No full textCocoa (Theobroma cacao L.) is one of the large plantations after oil palm. The increase in cocoa nursery can be accompanied by the utilization of waste derived from palm oil, namely oil palm empty fruit bunches (OPEFB). OPEFB can be useful as organic fertilizer because it can improve soil physical, chemical and biological properties. The use of OPEFB as organic fertilizer will also reduce excessive use of NPK. Utilization of OPEFB into organic fertilizer can be in the form of compost or raw OPEFB organic matter plus cellulolytic and lignolytic microbes. This study aims to determine the effect of NPK fertilizer and OPEFB compost on the growth of cocoa seedlings. This research was conducted experimentally using a completely randomized design (CRD) consisting of 9 treatments and 3 replications. Parameters of observation were plant height, stem diameter, number of leaves, root canopy ratio, dry weight of seedlings and age of planting. The results showed that the provision of 100 g/polybag OPEFB compost plus 50% NPK fertilizer (2 g / polybag) could provide good growth in cocoa seeds (Theobroma cacao L.).Keyword : Cocoa, compost, cellulolytic bacteria, lignolytic bacteria, OPEF