University Of Lampung Journal Publication
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Effect of Mulch and Strengthened Terrace Strips on Erosion, Sediment Enrichment Ratio, and Nutrient Loss Through Erosion
Full text linkMulching technology is accessible to farmers and can also reduce soil erosion and nutrient loss through erosion. This research aimed to observe the effectiveness of the combination treatment of strengthened terrace strips and maize stalk mulch on runoff, erosion, sediment enrichment ratio (SER), and nutrient loss through erosion. The experiment was conducted on upland farming on Andisol at the end of the rainy season. The erosion plot experiment was arranged in a Randomized Block Design (RBD) with the treatment of 4 doses of maize stalks mulch (0, 4, 8, and 12 Mg ha-1) and three types of strengthened terrace strips (Jali, Vetiver, and Kalanjana grass) put in groups/blocks, giving 12 experiments. The combination treatment of maize stalk mulch and strengthened terrace strips has not significantly reduced runoff and soil loss. The treatment mulch dose of 12 Mg ha-1 reduced runoff and soil loss by 9.9% and 21.9% compared to without mulch. The application of maize stalks mulch tends to reduce the sediment concentration and the number of nutrients (N and Organic C) lost through erosion but increases the nutrient concentration in sediments (SER value)
The Effectiveness and Valuation of Using Silt Pit to Reduce Erosion and Nutrient Loss of Andosol
Full text linkThe silt pit is a method of soil management that functions to accommodate and absorb surface runoff. The research aimed to determine the silt pit effectiveness for erosion reduction and nutrient loss. The research is located at 576 above sea level (asl) in Sukamantri village, Taman Sari district, Bogor Regency. The experiment used a randomized block design with three replications and a slope group. The treatments were R0 (without silt pit); R1 (silt pit); R2 (silt pit + mulch); R3 (silt pit + mulch + biopore tube), R4 (silt pit + mulch + biopore tube + vertical crop tube). The highest runoff-decreasing occurred on R4 treatment, which pressed down 29.38% runoff. The highest value of erosion-decreasing occurred on R2 as 68.74% and followed by effectiveness in reducing the loss of 71% Organic C, 76% available P, and 67% total N. The dry seeds peanut yield was around 0.54 - 0.86 Mg ha-1, dried pods was 0.96 - 1.33 Mg ha-1, and dried biomass was 5.16 - 6.23 Mg ha-1 and not significantly different between all treatments. This study recommends that farmers apply silt pit innovation technology with a combination of mulch, biopore, and mature green media because the incremental B/C ratio was 1.175. It is a good economic indicator for farmers
Characteristics of Peat with Different Depths in Supporting Growth and Productivity of Oil Palm
Full text linkThe potential for oil palm production on peatlands is very diverse; different types of peat, maturity, and depth significantly influence yields. This study aims to determine the characteristics of peat with different depths in supporting the growth and productivity of oil palm. The research was conducted at the PT Kaswari Unggul Palm Oil Plantation in Jambi Province using laboratory surveys and test methods. Observations done were Plant height, Number of Fresh Fruit Bunches (FFB), Stem Circumference, FFB Weight, Midrib Length, Palm Oil Productivity, Light Intensity. Soil analysis were available-P, total-Fe-, total N, organic-C and CEC, pH, Al-exchange, total-K, Soil Moisture, and Peat Maturity. In shallow peat, the soil is more completely decomposed and provides nutrients that can be absorbed by plants so that plants grow better. The results showed that the shallow peat has a maturity level of sapric peat (very ripe) and peat in hemic maturity (slightly mature). Also, the depth of peat will affect the value of total-N, pH, available-P, and K-exchange and does not affect organic-C, total-Fe, CEC, and Al-exchange. Moreover, the growth and production of oil palm on shallow peat were better than on deep peat
Land Suitability Evaluation on Pepper Plant in Bireuen Regency, Aceh Province
Full text linkPepper plant development requires data and information on land potential and land suitability class assessment based on the physical and chemical properties criteria so that the land can be productive. The study aimed to determine the land suitability class for pepper plants in Bireuen Regency. The research was conducted in Bireuen Regency. The unit land map (Satuan Peta Lahan, SPL) resulting from the overlay of the slope map, land use map, and soil type map was used in this study. The method used is a survey method with a land unit approach consisting of four stages: (1) preparation stage, (2) preliminary survey, (3) main survey, and (4) presentation of results. The results showed that the land had good to poor drainage, soil depth >75 cm, flat to steep slopes, mild to very heavy erosion hazard, dusty clay texture, low to high cation exchange capacity (CEC), slightly acidic to slightly alkaline pH, low organic C, Base Saturation (BS) is low to high, N total is low to very low, P2O5 is very low, and K2O is very low. Land suitability class for pepper plants in Bireuen Regency includes marginal suitability (S3) with limiting factors in the form of drainage, texture, CEC, BS, N-total, P2O5, K2O, slope, and erosion hazard. Improvements include making rorak, planting contours, drainage systems, applying manure or compost, and planting cover crops
Soil Chemistry Character, the N, P, and K Uptake, and the Growth and Yield of Corn (Zea mays L.) Due to the Application of Ela Sago Palm Waste Compost and Liquid Organic Fertilizer in Ultisols
No full textApplication of organic matter (compost Sago Ela palm waste and Liquid Organic fertilizers (LOF)) to the soil could have major benefits, such as to improve the soil physical condition (soil structure, water retention), and soil chemical properties (binding and providing nutrients, increasing CEC). The purpose of this study are (1) to improve the soil chemical properties of Ultisols, and (2) to increase plant uptake of N, P, and K, and the growth and yield of corn (Zea mays L.). The research was conducted in the field, namely in Telaga Kodok Village, Leihitu Sub District, and Central Maluku District. The experiment was designed in a factorial, and arranged in a randomized completed block design (RCBD). The first factor was the provision of compost Sago Ela palm waste (K) and the second factor was the provision of liquid fertilizer (C). The results showed that the compost combined with LOF could improve pH, Al-exchangeable, Total-N, P-available soil, Uptake-P, Uptake-K, and the dry weight of seed corn. While the treatment of sago Ela palm waste compost and LOF can independently raise the K-available soil, N-uptake, and affect corn’s plant growth (height and trunk diameter). The treatment doses of sago Ela palm waste compost of 60 Mg ha-1 and LOF of 20 mL L-1 solution can increase the exchangeable Al, Total-N, and P-available soil, respectively 0.56 cmol(+)kg-1, 0.21%, and 31.00 mg kg-1; also able to increase the uptake of P, K, and weight dry seed corn respectively 0.21% and 1.26%, and 121.33 g plant-1. The treatment doses of Sago Ela palm waste compost of 60 ton ha-1 and liquid organic fertilizer of 10 mL L-1 solution can increase the soil pH by 5.70
Temporal Changes in Spatial Patterns of Soil Properties During a Period of Rice Growth
Full text linkGrowing rice is complicated because of the interrelationship among production components, one of which is soil conditions. Determination of soil conditions is usually conducted by employing some soil properties. It is no doubt that soil properties have spatial and temporal characteristics. This research used two soil properties: Electrical conductivity (EC) and pH. This study aimed to use and evaluate Inverse Distance Weighted to uncover the temporal changes in pH and EC during the rice growth period. The methods used in the research were field survey, soil sampling, laboratory analysis, and data processing in Geographical Information Systems (GIS). The sample used was 30 and repeated three times under the growth period (vegetative, generative, and ripening). The results showed that there were changes in pH values of the soil in one growing season, and EC values tend to increase from the vegetative to the ripening period
An Analyze of Urban Temperature Using Energy Balance Algorithm for Land (SEBAL) in Yogyakarta City
Full text linkThis study examines the Land Surface Temperature (LST) using the Surface Energy Balance Algorithm for Land (SEBAL) model in Yogyakarta. SEBAL is relied upon for its accurate LST predictions because it takes into account the influence of vegetation and soil. This study identified LST in various land cover/land use (LULC) types extracted from Landsat 8 remote sensing images recorded in April 2019 (wet day) and June 2019 (dry day). The LULC classification results in the study area show that built-up land is the dominant land use, with 93.30% of the total area, and the rest is non-developed land (vegetation, open land, and water body). The average LST value on a wet day is 26.79 °C, while on a dry day, it is 30°C. The highest temperature occurs on the dry day, 35.17 °C, and the lowest on the wet day, which is 13.63°C. The correlation between LST and LULC shows the same pattern on the two different days, in which the value of vegetation temperature is lower than that of open and developed land. This research proves that vegetation influences a decrease in land surface temperature. Judging from the dominant land use being the built-up area in Yogyakarta, urban planners need to consider increasing green open spaces
Assessment of Three IAARD Maize Productivity In Tobadak District, Central Mamuju, Indonesia
Full text linkAssessment of three IAARD maize productivity was conducted in Tobadak sub-district, Central Mamuju. The purpose of the assessment was to determine the productivity of three IAARD hybrid maize. The area of study 3 ha, applying Integrated Crop Management (ICM) models. Varieties which assessment Nasa 29, JH 37 and JH 45, and NK 212 as comparison variety. The experiments were arranged in a randomized block design which 3 times replication. Observations were made on the growth and maize yield. Based on the results of mapping of Indonesian Center for Agricultural Land Resources Research and Development (ICALRRD), land suitability classes for maize in Central Mamuju Regency which are quite suitable (S2) and marginal (S3) are 4,308 ha and 87,889 ha respectively, while that not suitability (N) covering an area of 193,441 ha with limiting factors including nutrient retention, nutrient availability, water availability, and root media. The studied was show that IARRD hybrid maize can increase productivity. The results showed that Nasa 29, JH 37, and JH 45 respectively gave yields 12.87 Mg, 9.02 Mg, and 7.77 Mg ha-1, higher than the average maize yield achieved in West Sulawesi and Central Mamuju Regency, each 4.70 Mg ha-1and 5.19 Mg ha-1. Nasa 29 gave higher yields and was significantly different compared to NK 212 (9.65 Mg ha-1) as comparison variety, and JH 37 variety was not significantly different with NK 212, but while JH 45 variety had lower results and was significantly different with NK 212. Nasa 29 and JH 37 varieties have the opportunity to be developed in Tobadak district, Central Mamuju, West Sulawesi
Effects Nutrient Additives of NPK Fertilizer and Coconut Water on the Yield of White Oyster Mushroom (Pleurotus ostreatus)
Full text linkWhite oyster mushroom (Pleurotus ostreatus) requires a source of nutrients for growth and development. The provision of NPK fertilizer aims to increase the source of media nutrients so that the results obtained are better in quantity and quality. Growth regulators can stimulate the relatively long growth of oyster mushroom mycelium. Growth regulators contain hormones that can support growth rates. One alternative natural growth regulator that can be used is coconut water. The research was carried out at the oyster mushroom kumbung at Pekanbaru, using a completely randomized design, consisting of 2 factors and three replications. The first factor was NPK fertilizer consisting of 4 levels (0, 7.5, 10, 12.5) g per baglog. The second factor was coconut water consisting of 4 levels (0, 3, 6, 9) ml per baglog. Data were analyzed using Analysis of Variance and further tested using DNMRT level 5%. The results showed that adding 10 g of NPK fertilizer and 6 ml of coconut water per baglog was a better dose for the number of fruit bodies, fresh fruit body weight, fruit cap diameter, fruit stalk length, and biological efficiency
Biocompost and Arbuscular Mycorrhizal Fungi on Chemical Properties of Inceptisols and Root Infection in Purple Corn Plants
No full textThe purpose of this study was to evaluate the application of biocompost and mycorrhizae fungi on chemical properties of inceptisol soil and root infection on purple corn plants. This research was conducted in October-December 2020 at Experimental Garden, Faculty of Agriculture, Universitas Malikussaleh in Reuleut Village, Muara Batu District, Aceh Utara, employing Randomized Block Design (RBD) Factorial with 2 factors observed. The first factor observed was different doses of biocompost: B0 (0 ton/ha, 0 g/plot), B1 (5 tons/ha, 1500 g/plot), B2 (10 tons/ha, 3000 gr/plot) and B3 (15 tons/ha, 4500 gr/plot). The second factor was M0 (0 ton/ha, 0 gr/plot, 0 g/plant), M1 (0.25 tons/ha, 75 g/plot, 5 g/plant) dan M2 (0,5 ton/ha, 150 g/plot, 10 g/plant). The results indicated that the application of biocompost together with mycorrhizae has increased soil pH from 5.0 to 5.5 and the application of biocompost alone has improved the organic C (1.58% to 2.98%) and the application of mycorrhizae improved the root infection by 90%. The application of 5 ton/ha biocompost and 0.5 ton/ha mycorrhizae were to be found to be the best doses to improve the chemical properties of inceptisol soil and mycorrhizal infection.Keywords: biocompost, inceptisols, purple corn, mycorrhizal fung