Journal of Soilscape and Agriculture

Effect of Application of Several Organic Fertilizers on the Growth and Yield of Tobacco (Nicotiana Tabacum L.)

Mohamad Aji Rizki Ramadhan — 2024-09-23

Tobacco (Nicotiana Tabacum L.) is an agricultural commodity that is widely cultivated by the community. The decline in productivity is due to the uncontrolled use of chemical fertilizers and chemical pesticides, resulting in the degradation of organic matter. To deal with the problem can use Liquid Organic Fertilizer according to the dose for tobacco plants. The purpose of this study was to determine the effect of Liquid Organic Fertilizer treatment of shallot skin waste, banana stem waste, banana peel waste, and coconut coir waste on the growth and yield of tobacco plants. The study used a 1-factor Completely Randomised Design (CRD), with 5 levels, namely P0: Without Liquid Organic Fertilizer (Control), P1: Liquid Organic Fertilizer of shallot skin waste dose (300 ml/plant), P2: Banana stem waste Liquid Organic Fertilizer dose (300 ml/plant), P3: Banana peel waste Liquid Organic Fertilizer dose (300 ml/plant), P4: Liquid Organic Fertilizer ofcoconut fiber waste dose (300 ml/plant). The research variables observed included plant height, number of leaves, leaf length, leaf width, stem diameter, root length, root volume, wet weight of leaf production, and dry weight of leaf production. The effect of Liquid Organic Fertilizer application had a very significant effect on the variables of plant height, leaf length, leaf width, root length, leaf wet weight, and leaf dry weight. Coconut coir Liquid Organic Fertilizer treatment (P4) has a tendency to produce the best tobacco plant growth.

The Effectiveness Test of Biofertilizer Phosphate-Solubilizing Bacteria (PSB) and Phosphate Fertilizer on The P availability in the Soil and Tomato Plant Tissue

Retno Purnama Sari Sari — 2024-09-23

Phosphorus is one of the essential nutrients whose availability is very small in the soil. Research on the effectiveness test of biofertilizer phosphate solubilizing bacteria (PSB) and phosphate fertilizer (SP-36 and rock phosphate) on the availability of soil p and p content in tomato plant tissue to determine the effectiveness of SP-36, Rock Phosphate and PSB in increasing P availability soil. The study used factorial randomized block design with two factors and three replications. The first factor is a phosphate solvent bacterial isolate consisting of two levels, without isolate Pseudomonas sp. and with Pseudomonas sp. The second factor is phosphate fertilizer with five levels of control; SP-36 fertilizer 0.32 g/plant; SP-36 fertilizer 0.63 g/plant; rock phosphate fertilizer 0.41 g/plant; and rock phosphate fertilizer 0.81 g/plant. The data obtained were analyzed using Analysis of Variety and continued with Duncan Multiple Range Test (DMRT) test with 95% confidence level. The results showed that the administration of PSB isolate gave increased P-available, P tissue, plant height, wet weight and dry weight of plant and tomato plant production. The application of SP-36 and rock phosphate fertilizer gave an increase to P-available and P-tissue variables, whereas for the production of SP-36 fertilizer plants with dose of 65 g/plant gave higher yield compared to rock phosphate fertilizer.

Verification of Soil Test Crop Response Based Calibrated Phosphorus for Food Barely (Hordeum Vulgare L.) Production in Sinana District, Bale Zone, Oromia Region, Southeast Ethiopia

Mulugeta Eshetu — 2024-09-23

Nitrogen and phosphorus are the main variables restricting crop productivity in the soil of the study area, especially, in food barely productions. In the Sinana district, soil test-based phosphorus calibration studies were carried out in the past, and fertilizer 46 N kg ha-1, P critical (20 ppm), and P requirement factor (4.60) were recommended for food barely production. To confirm the phosphorus critical (Pc) level and phosphorus requirement factor (pf) found during soil test crop response based phosphorus fertilizer calibration study for food barely production in 2022 bona (July to December) main cropping season, an on-farm field experiment was carried out in this study. The experimental setting comprised three treatments: (1) control (without fertilizer), (2) farmer practices as a blanket recommendation, and (3) soil test crop response-based phosphorus recommendation results. The improved food barely, Adoshe variety was used as a test using farmers as replication in seven sites with 10 m × 10 m plot sizes. Soil samples before planting were taken at 0 - 20 cm soil depth using a random sampling technique and analyzed using standard laboratory procedures. In contrast, the agronomic parameters were analyzed using R software 4.1.1 version. The results show soil sample analysis varied from 6. 03 to 6.25, 1.68 to 2.62%, and ranged from 1.01 to 3.30 mg/kg for soil pH (pH_H2O), OM, and available phosphorus, respectively. The results revealed a significant (p < 0.05) difference between food yield and yield components. The soil test crop response-based phosphorus recommendation results yielded the highest grain yield (5682.43 kg ha-1) with a marginal rate of return (4131.16%). Thus, for food barely production in Sinana District, the Pc (20 ppm) and pf (4.60) with optimal N (46 kg ha-1) were verified from this study. It should be recommended that further demonstrate and scale up the application of soil test-based fertilizer recommendations, to extrapolate Pc and Pf for similar soil types, and to determine the adjusted NPS fertilizer rate using calibrated phosphorus for food barely production.

Microbiological Analysis of Well Water Quality in Market and Residential Areas of Kendari City

La Ode Muhammad Erif — 2024-09-23

Water is an essential element for human life; without water, humans will experience a lack of fluid, the fluid in the human body is around 50-80. Water can fulfill daily needs through human activities such as washing clothes, water for drinking, bathing, and so on. Well, water is suitable for use if it meets water quality standards. This type of research uses descriptive research methods. This research is located in Baruga Market, Anduonohu Market, Lorong Salangga, and Kendari Permai Kendari City in December 2023. the samples used in this study amounted to 4 wells. The results obtained in this study are that all well water is polluted with E. coli, and Baruga Market well water exceeds the quality standards for Coliform parameters. The presence of E. coli in all well water samples indicates fecal contamination, posing severe health risks such as waterborne diseases. Baruga Market's well water exceeds Coliform standards, likely due to sewage runoff, making it unsafe without treatment. Immediate actions, like improving sanitation and providing clean water alternatives, are necessary to prevent further contamination and protect public health.

Vegetation Index Assessment Modeling Using Remote Sensing And Soil Surveying The Slope of Argopura Mountain: a Case Study in Kalianan Village, Krucil District, Probolinggo Regency

Basuki Basuki — 2024-09-23

Vegetation is a form of soil with a density level in each region that is influenced by other land factors such as rainfall, soil conditions, and water. Density levels can be analyzed either manually in the field or using remote sensing technology. Field observations have weaknesses, one of which is that the time used for a wide area > 1 ha requires > 2 days. The use of remote sensing technology has the advantage of being able to cover large areas in a short time with a modeling system. The research uses a data exploration modeling method with an NDVI approach to calculate the analysis of Landsat 8 image bands. NDVI is calculated based on bands 4 (red) and 5 (near-Infrared). The research results show that in 2017, Kalianan Village, Krucil District, had a vegetation index dominated by dense and very dense density classes. In 2022, the vegetation index of Krucil Village will be dominated by medium- and low-density classes. The differences that occur in 2017 and 2022 could occur due to the deforestation of land for tourism and residential areas.

Variations of Growing Media and Light Emitting Diode (LED) Colors in Red Spinach Microgreens

Vega Kartika Sari — 2024-09-30

Microgreens have higher nutrition than mature plants. Microgreens are popular for garnishing dishes and are a choice for those living a healthy life. Red spinach microgreens are preferred and contain many vitamins. The type of the growing media used will influence the growth of microgreens. Growing media can vary in texture, nutrient, and mineral content. Lighting also required by microgreens may require choosing the right type of LED light color because generally microgreen cultivation is indoor. The aims of this research is to determine the growth of red spinach microgreens on various types of growing media and on several types of LED colors. The result showed that, the best results for germination, plant height, and number of leaves are red and blue LEDs on all media, while for the best fresh weight using red LEDs on sand-compost media.