Jurnal Lahan Suboptimal : Journal of Suboptimal Lands
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Growth and Yield of Shallots at various Plant Spacing in Ultisol Dry Land
No full textPlant spacing was one method that could be used to boost plant populations. In order to increase shallot (Allium ascalonicum L.) production and productivity on less-than-ideal ground, such as dry land in Jambi. This study aimed to examine the effects of various plant spacing on the growth and yield of shallots and to obtain plant spacing that provides the best shallot growth and yield. This research was conducted at the Teaching and Research Farm, Faculty of Agriculture, University of Jambi. The design used a Randomized Block Design (RBD) consisting of four treatments with six replications. The treated plant spacing was:10 cm x 10 cm; 15 cm x 15 cm; 15 cm x 20 cm; and 20 cm x 20 cm. Various plant spacing affected the shallot growth and yield, and a plant spacing of 15 cm x 15 cm provided better growth and yield compared to any other plant spacing, with the number of leaves per plant, the weight of bulbs per clump, and the weight per bulb of 22, 49, 49.84, and 13.94 g successively
Biology of Pentalonia nigronervosa and Its Efficiency as a Vector of Banana Bunchy Top Virus After Being Bred in Rat Taro (Typhonium flagelliforme)
No full textP. nigronervosa is an insect that acts as a vector of the Banana Bunchy Top Virus causing the affected banana to become stunted and even fruitless. This study aimed to find out the biology of P. nigronervosa in rat taro as well as its ability or efficiency in the transmission of BBTV disease in bananas after being treated. The study was experimenta, trying to find out the efficiency of BBTV transmission by P. nigronervosa after being transmitted to the plant of rat taro (T. flagelliforme) with the variables of observation and the taking of biological data of Pentalonia nigronervosa in the rat taro plant, Observation of the development of BBTV disease in banana plants inoculated from the first symptoms until the typical phenomenon of bunchy top was formed. Biology of P. nigronervosa in rat taro. Each stage of the four color instars and The size of the nymph of P. nigronervosa changed. When entering the first brownish-white instar with a length of 0.61 to 0.69 mm, in the 2nd instar it was light brown with a length of 0.71 to 0.83 mm, then in the 3rd instar it was reddish brown with an average length of 0.87 mm, and in the 4th instar it was blackish brown with an average body length of 1.31 mm. The imago color was still blackish brown, and in this phase it usually had wings, but in the treatment of the imago rat taro plant, it had no wings, and the average body length was 1.43 mm. In the field tests, the rat taro plants could not inhibit the spread of BBTV disease but could be an alternative host for P. nigronervosa ticks
Growth and Yield of Green Eggplant Applied to Various Compositions of Growing Media
No full textGreen eggplant was a vegetable which used for cooking ingredients and has rich nutrients. To increase the green eggplant productivity, it was necessary to improve the quality of growing media so the plant nutrition will be fulfilled. This study aimed to find out the best composition of growing media for the growth and yield of green eggplant. It used a Randomized Block Design (RBD) with 10 treatments for the composition of the growing media. The results of the analysis of diversity showed that the application of rice husk charcoal and chicken manure had a very significant effect on plant height, number of leaves, stem diameter, flowering age, harvest age, number of fruits per plant, fruit length, fruit diameter, and total fruit weight per plant. The results of the orthogonal contrast test showed that the green eggplant grown on soil media was very significantly different from the green eggplant grown on other growing media in all variables. The best results were obtained from the treatment of rice husk charcoal: chicken manure: soil (2:1:1) on the variables of plant height was 42.26 cm, flowering age was 22.33 days, total fruit weight per plant was 538.44 g, fruit diameter was 38.16 mm, and average weight per fruit was 81.66 g. The treatment of growing media composition using a combination of chicken manure and rice husk charcoal was better than the growing media with just one organic matter
Technical Efficiency Analysis of Cassava Farmers on Suboptimal Dry Land
No full textThe government launched a food diversification program, one of which was cassava so that the population does not depend on rice, and anticipates when rice production decreases due to crop failure. However, cassava production was much lower than rice. There were efforts to utilize suboptimal land to increase cassava suplly for population consumption. Therefore, this study aimed to assess the level of technical efficiency of cassava farming on suboptimal dry land. The research sample of 60 cassava farmers in Jaddih Village, Bangkalan Regency was taken by census to answer the research objectives. Stochastic frontier analysis was used to determine the effect of agricultural inputs consisting of land, seeds, labor, costs, and manure on the production of cassava. Then to determine the effect of age, experience, formal education, non-formal education, and family dependents on cassava insufficiency. The results show that cassava production will increase with the increase in land area, but will decrease with the increase in seedlings. The average technical efficiency of cassava was 87%, where this value will increase if farmers attend non-formal education. This research contributes to policy makers to optimize suboptimal land use, and to farmers to take advantage of production inputs and socio-economic variables that affect production increases and technical efficiency
Percentage of Flower and Fruit Fall, and Red Chili Production in Ultisol Applied Biostimulants and Inorganic Fertilizers
No full textUltisol has main problem of low nutrient availability causing a high percentage of flowers and fruit fall and reducing red chili production. This study aimed to find out effectiveness of biostimulants in reducing percentage of flower and fruit fall, use of inorganic fertilizer doses, and their role in increasing production red pepper in Ultisol. The method used experimental and randomized block design with 9 treatments. The treatment used application of flush biostimulants and without watering into soil with various doses inorganic fertilizers. The fertilizer doses were 100%, 75%, and 50% based on fertilization recommendations. The study results showed that application of biostimulants combined with inorganic fertilizers of various doses had a significant effect on fruit weight/plant and red pepper production, but had an insignificant effect on the percentage of flowers and fruits, as well as number of fruits/plant. Application of biostimulants and various doses of inorganic fertilizers tended to increase fall of flowers, number of fruits/plant, and the percentage of fruit fall. Biostimulants combined with inorganic fertilizers were able to reduce fertilizer use as much as 50%. Production of red pepper with application of biostimulants and 50% of inorganic fertilizers reached 5.36 tons/ha. The results of the economic feasibility analysis of red chili peppers were 1.69 R/C and 0.69 B/C ratio, meaning that the cultivation of red chili with application of biostimulants was profitable and worthy of development. So, application of biostimulants is able to reduce fertilizers by 50% and increase production of red peppers
Growth and Yield of Spinach (Amaranthus tricolor L.) Using Various Compositions of Planting Media
No full textSpinach was a vegetable that was rich in nutrients and has many health benefits. The high level of public consumption of spinach plants in line with population growth, it was necessary to increase production by using organic fertilizers. This research aimed to determine the effects of the composition of the growing media among soil, chicken manure, and oil palm empty fruit bunches fertilizer on the growth and yield of spinach. The research used a completely randomized design (CRD) with 6 treatments repeated three times and each treatment unit consisted of 5 plants so that the total number of all plants was 90 plants. The results of the analysis of diversity showed that the treatment of chicken manure and oil palm empty fruit bunches fertilizer had a very significant effect on the plant height, leaf area, plant fresh weight, crown fresh weight, root fresh weight and plant dry weight. The provision of chicken manure and oil palm empty fruit bunches fertilizer had a significant effect on the number of leaves, but had no significant effect on the level of greenness of the leaves and the root shoot ratio. The results of the study showed that the soil treatment: chicken manure: oil palm empty fruit bunches fertilizer (1:2:2) provided the best results on the variables of plant height, number of leaves, leaf area, plant fresh weight, crown fresh weight, root fresh weight, and plant dry weight. The soil composition : chicken manure : oil palm empty fruit bunches fertilizer (1:2:2) was the best combination of planting media for the spinach growth and yield. Spinach cultivation using the composition of soil planting media, chicken manure, oil palm empty fruit bunches (1:2:2) could increase crop yields
Description of Changes on C-organic, N also The Growth of Pepper Shrub due to The Application of Vermicompost in a Floating System
No full textThe development of pepper shrub requires an additional fertilizer, hence the pepper plants were classified as nutrient voracious. This study aimed to describe changes in vermicompost on soil N, C-organic and pepper shrubs growth in a floating system. This study utilize a Randomized Block Design Factorial, with 5 levels of treatment, V0 (0 g/plant), V1 (250 g/plant), V2 (500 g/plant), V3 (750 g/plant), and V4 (1000 g/plant). The results indicate that the Vermicompost treatment has no significant effect to increase soil C-organic and soil N nutrient. With the vermicompost treatment, the highest result for soil C-organic and soil N nutrient was produced by 1000 g vermicompost/plant. The best enhancement in plant N nutrient was produced by 500 g vermicompost/plant. The average value of the best number of leaves produced by 1000 g vermicompost/plant. Some leaves indicate some symptoms of disease caused by the fungus Phytophthora capsici which then at 12 WAP there were three unsuccessful plants. As a conclusion, the application of vermicompost was able to provide nutrients for pepper shrubs, especially for increasing C-organic, N nutrient of soil and plants as well as the plant growth
Correlation and Path Analysis Maize Hybrid Yield
No full textThe yield was a complex quantitative character. It was due to many other characters being related to yield. This study aimed to determine the correlation between agronomic characters in maize and the characters that affect the yield of hybrid maize. This experiment was conducted at the Bajeng IP2TP, Indonesian Cereal Research Institute, Gowa, South Sulawesi from March to June 2022. The treatments consisted of ten hybrid maize genotypes. The treatments were arranged in a Randomized Complete Block Design (RCBD) with three replications. The variables observed were the agronomic component and yield component. Pearson's correlation was used to determine the relationship between characters, and the characters that affected the grain yield were determined by path analysis. The results showed the characters leaf length, leaf width, harvested plant number, harvested ear number, harvested ear weight, shelling percentage, ear length, ear diameter, kernel number per row and 1000 grains weight have a significant correlation to yield. Characters that affected to maize yields were harvested ear weight, shelling percentage and grain moisture
Growth and Yield of Indoor-Cultivated Mustard Microgreens against the Duration of LED Irradiation and Variations in Planting Media
No full textThe limitations of agricultural land currently encourage cultivation activities to be carried out with the use of limited space such as indoor cultivation by utilizing irradiation techniques and the use of varied planting media. This study aimed to evaluate the growth and yield of indoor-cultivated mustard microgreens to the irradiation duration and the composition of varied planting media. This study used a split plot design with the treatment of LED irradiation duration of 0, 10, and 20 hours/day, and the variations of planting media, 100% soil, 100% compost, addition of 50% compost and cocopeat, and a combination of compost and cocopeat planting. The study results showed that the irradiation only affected the plant height in the both planting periods. The treatment of the composition of the planting media had significant effect on all variables observed in the two planting periods, while the interaction had a very significant effect on the plant height on 1st planting period and root length on 2nd planting period. The treatment of 50% soil + 50% compost on LED 10 hours/day had the highest yield of fresh weight in two planting periods. The use of 100% soil media inhibited the growth of mustard microgreens, while the irradiation of 0 hours/day in all planting media treatments showed the symptoms of etioliation. So, the treatment of 10 hours/day irradiation with the addition of 50% compost is able to provide the best results in quality and quantity against the pH value and the growth and yield of mustard microgreens
Mapping of Land Use in Cijengkol Village, Subang Regency Using Sentinel-2 MSI (MultiSpectral Instrument)
No full textEvery year, land use in Indonesia has increased, both for settlements, agriculture, and other uses that are used to meet the needs of human life for certain purposes. Cijengkol Village is one of the agricultural development villages in Subang Regency and is affected by topography, resulting in different types of land use. This mapping aimed to provide information related to the classification of land use for settlements, agriculture, plantations, fields, and others in Cijengkol Village. Land use mapping was carried out in this village to reveal the distribution of land use so that it could be taken into consideration, as well as directions for determining spatial planning by the local government. Therefore, this mapping was carried out by involving the Sentinel-2 MultiSpectral Instrument (MSI) image data source and processed using a cloud computing-based Google Earth Engine (GEE) platform. Six spectral scoring index algorithms exist the Enhanced Vegetation Index (EVI), Soil Adjusted Vegetation Index (SAVI), Specific Leaf Area Vegetation Index (SLAVI), Index-Based Built-Up Index (IBI), Normalized Difference Built-up Index (NDBI), and the Normalized Difference Water Index (NDWI). The results of the random forest (RF) classification algorithm resulted in six types of land use with percentages, namely mixed gardens (39.69%), agriculture (34.08%), homogeneous gardens (13.57%), residential (10.58%), open land (2.09%), and water bodies (0.001%). Image classification in this mapping also produces an accuracy rate of 82.43% (Overall Accuracy) and 0.78 (Kappa Statistics). The results of this research are of a good level of accuracy, so it is hoped that this research will become a database for the local village government and become a reference for further research