Types Of Compost Research Articles

Obtaining compost to develop significant learning in the subject of natural sciences: an educational methodology

This paper presents an evaluation of the elaboration of compost as an educational methodology in teaching the subject of natural sciences. The experiment was carried out for two types of compost to recognize which offers better soil fertility from the different materials used in its elaboration. Two groups of students were used to evaluate the performance presented with the practical and traditional theoretical methods. The main results show that teaching from experimentation offers better alternatives to recognize concepts and their applications, to retain knowledge effectively.

Selection of organic matter as a wetland substrate for acid mine drainage treatment

Acid mine drainage (AMD) is one of the problems arising from mining activities. Acid mine drainage is formed due to the oxidation of sulfide minerals such as pyrite (FeS2) by water and oxygen. Alternative management of AMD in a sustainable and eco-friendly way is constructed wetland. Therefore, this study was conducted to determine the type and composition of potential organic matter that can improve AMD quality. The study consisted of three stages: a screening of organic matter, a combination of two organic matters, and a combination of cow manure and empty fruit bunches (EFB) in various compositions. Types of organic matters used are cow, goat, and chicken manure, three types of compost, EFB, sawdust, wood chips, chopped water hyacinth, cocopeat, fresh waste and compost waste cajuputi leaf, waste of citronella distillation, baglog waste, and bagasse. The results showed that several types of organic matter could increase the pH of AMD. The combination of EFB and cow manure with a ratio of 2:1 is the best result because it can increase pH, reduce dissolved heavy metals and sulfates, and availability of raw materials that are abundant in nature, especially in Indonesia.

Application of Vermicompost, Kasgot (BSF Compost), and Vermigot for growth and production of Pakchoy (Brassica rapa L.) in Ultisol

Ultisol have low organic matter content, acid pH, very low available nutrients, and high Al, therefore compost application is needed as a source of nutrients for plants in Ultisol. Vermicompost, which is produced from the decomposition of certain organic matter by earthworms. However, there is another decomposer that is producing compost, Black Soldier Fly larvae, it is called Kasgot (BSF compost). The new compost from combination of the two types both of compost is called Vermigot. This study aimed to examine the combination of vermicompost and kasgot from cow dung and banana stems on the growth of pakchoy in Ultisol soil. This study used a factorial randomized block design (RAK). The first factor is the type of compost (K): K1 (vermicompost), K2 (kasgot) and K3 (vermigot). The second factor is the dosage (D): D1 (100 g/pot), D2 (200 g/pot), and D3 (300 g/pot). The treatment was repeated two times so that 27 treatments were obtained. The best compost that could be used to increase the growth and production of pakchoy was vermigot compost 200 g/pot, while the type of compost with the best chemical characteristics and nutrient content in Ultisol soil was vermigot at a dose of 300 g/pot.

Oxygen uptake rate versus CO2 based respiration rate for assessment of the biological stability of peat, plant fibers and woody materials with high C:N ratio versus composts

The biological stability of organic materials predicts their performance when used as either a soil improver or as an ingredient in growing media. CO2 release in a static measurement and O2 consumption rate (OUR) were compared for seven groups of growing media components. The ratio between CO2 release and OUR was matrix-specific. This ratio was highest for plant fibers high in C:N and with a high risk of N immobilization, intermediate for wood fiber and woody composts, and lowest for peat and other compost types. The effect of variable test conditions in the OUR setup was assessed for plant fibers, where addition of mineral N and/or nitrification inhibitor had no effect on the OUR measurements. Testing at 30 °C instead of 20 °C resulted in higher OUR values as expected, but did not change the effect of mineral N dose. A strong increase in the CO2 flux was measured when plant fibers were mixed with mineral fertilizer; in contrast, addition of mineral N or fertilizer before or during the OUR test had no effect. The present experimental setup did not allow for differentiation between a higher CO2 release as a result of increased microbial respiration after adding mineral N versus an underestimation of stability due to N limitation in the dynamic OUR setup. Results indicate that type of material, C:N ratio and risk of N immobilization all appear to affect the OUR results. The OUR criteria may therefore require clear differentiation based on the different materials used in horticultural substrates.

Respon Pemberian Jenis Kompos dan Dosis Pupuk Organik Cair terhadap Pertumbuhan dan Produksi Tanaman Timun Suri (Cucumis Mel L Var Reticulatus Naudin)

This study aims to determine how the growth and production of cucumber suri (Cucumis Mel L. Bar Reticulatus Naudin) are affected by the type of compost and the amount of liquid organic fertilizer applied. This research was conducted at AKN Sakojo No. 21 Kedondong Raye Village, Banyuasin III District, Pangkalan Balai, South Sumatra from July to September 2022. This study used a split plot randomized design consisting of nine treatment combinations and repeated three times. The first factor (Main Plot) was the variation of the type of compost, with K1 being chicken manure compost (3 kg per plot), K2 being rice straw compost (3 kg per plot), and K3 being cow manure compost (3 kg per plot). ). The second factor (subplot) was the dose of liquid organic fertilizer, with P1 being 6 cc/liter and P2 being 4 cc/liter. and 2 cc/liter is P3. The variables observed were stem length (cm), number of branches (branches), number of fruits planted (fruit), weight of fruit planted (g), weight of fruit per plot (kg). The results showed that the use of fertilizer types greatly affects the length of the plant and the number of planting branches. However, the dose of liquid organic fertilizer had a significant effect on all observed variables. The results of the analysis show that the two factors affect the variable number of planting branches through interaction. Rice straw fertilizer type treatment gave the best results on plant length and number of branches. For growth and production of cucumber suri, treatment with liquid organic fertilizer at a dose of 6 cc/l of water gives the best results. . Interaction treatment between the type of rice straw compost with a dose of liquid organic fertilizer 6 cc/l of water obtained the best results on the number of branches per plant. Keywords: Production of Suri Cucumber; Compost; liquid organic fertilizer.

Behavior of trace metals during composting of mixed sewage sludge and tropical green waste: a combined EDTA kinetic and BCR sequential extraction study in New Caledonia.

The aim of the study was to assess the impact of composting on the release dynamics and partitioning of geogenic nickel (Ni), chromium (Cr)and anthropogenic copper (Cu) and zinc (Zn) in a mixture of sewage sludge and green waste in New Caledonia. In contrast to Cu and Zn, total concentrations of Ni and Cr were very high, tenfold the French regulation, due to their sourcing from Ni and Cr enrichedultramafic soils. The novel method used to assess the behavior of trace metals during composting involved combining EDTA kinetic extraction and BCR sequential extraction. BCR extraction revealed marked mobility of Cu and Zn: more than 30% of the total concentration of these trace metals was found in the mobile fractions (F1 + F2) whereas Ni and Cr were mainly found in the residual fraction (F4). Composting increased the proportion of the stable fractions (F3 + F4) of all four trace metals studied. Interestingly, only EDTA kinetic extraction was able to identify the increase in Cr mobility during composting, Cr mobility being driven by the more labile pool (Q1). However, the total mobilizable pool (Q1 + Q2) of Cr remained very low, < 1% of total Cr content. Among the four trace metals studied, only Ni showed significant mobility, the (Q1 + Q2) pool represented almost half the value given in the regulatory guidelines. This suggests possible environmental and ecological risks associated with spreading our type of compost that require further investigation. Beyond New Caledonia, our results also raise the question of the risks in other Ni-rich soils worldwide.

Evaluation of phytotoxic effect of plant dry leaf based vermicompost on seed germination, growth and yield of fenugreek (Trigonella Foenum Graecum)

Phytotoxicity is one of the most critical factors for determining whether any type of compost is suitable for agricultural use and in avoiding environmental hazards until it is recycled back to agricultural land. Composting is one of the best economic and environmentally sustainable means of managing different kind of wastes from different origins. The present study involves plant bioassay test conducted by using different amounts of soil and vermicompost. The treatments prepared are 25%, 50%, 75% and 100% including one control. For each trail, three replicates were maintained in order to get the accurate results. The seeds used for the study are fenugreek seeds. The mean values were calculated and used for interpretation of the results. From the plant bioassay experiments, various parameters like total seeds germinated, number of leaves, number of flowers, pods, seeds in pods, length of roots and shoots were counted and measured. From the experimental results, it was found that overall growth of plants was observed in 25% and 50% treatments compared to the other treatments and control. The plant bioassay tests clearly showed that soil with 25% to 50% of vermicompost mixing will be found beneficial for the growth and development of fenugreek plants.

The Effect of Fruit Waste Compost with Inorganic Fortification on Spinach Quality

Abstract: Spinach (Spinacia oleracea), locally known as Palak, is one of the most essential vegetables of the Chenopodiaceae family. It is a rich source of fiber, vitamins A, C, E, K, B6, B2 as well as magnesium, manganese, iron, calcium, potassium, copper, phosphorus, zinc, selenium, folate, betaine, folic acid, collagen, niacin, omega 3 fatty acids, beta carotene, lutein, carotenoids, and quercetin bioflavonoid with many other flavonoids. This study was conducted to evaluate the effect of different type of compost(T1 - Control, T2 -Sweet lime compost 2 Ton/ha, T3 -Sweet lime compost 4Ton/ha, T4 -Sweet lime compost with Zinc and Iron 2 Ton/ha, T5 -Sweet lime compost with Zinc and Iron 4Ton/ha, T6-Pineapple compost 2 Ton/ha, T7 -Pineapple compost 4Ton/ha, T8-Pineapple compost with Zinc and Iron 2 Ton/ha), T9 -Pineapple compost with Zinc and Iron 4Ton/ha) on spinach. The experiment was conducted at the Research Farm, Department of Horticulture, Banaras Hindu University, Varanasi, during the Rabi seasons of 2019 and 2020, respectively. The experiment was laid out in Randomized Block Design with three replications. The whole field was first divided into three blocks, and each block was further divided into nine plots. An analysis of variance for all the treatments in Randomized Block Design (RBD) was carried out. For testing the hypothesis, the ANOVA table was used. Except fat content, the results of the sweet lime waste compost were good in terms of the overall proximate composition of spinach. Maximum antioxidant levels in spinach were found at fortified pineapple waste compost rates of 2 and 4 tonnes per hectare, respectively.

Composting Sugarcane Filter Mud with Different Sources Differently Benefits Sweet Maize

Reusing organic wastes in land applications would enhance the recovery of resources, following the concepts of the circular economy. The sugarcane-based sugar industry produces various by-products (e.g., sugarcane filter mud, molasses, and bagasse) that have the potential to contribute to crop production and soil fertility, owing to their high contents of organic matter and nutrients. Although the agricultural benefits of compost utilization in agriculture have been well-documented, to the best of our knowledge, few scientific data are currently available on the effects of sugarcane filter mud combined with the application of compost for increasing crop production. Thus, a field experiment was carried out to study how sugarcane filter mud, in combination with two compost sources, affected the growth and yield of sweet maize (Zea mays var. saccharata). We compared (i) two types of compost made from brassica residue and household waste applied at a rate of 9 t ha−1, and (ii) two application rates of sugarcane filter mud: 0 and 2 t ha−1 to two controls without any compost application: one with (+SFM) and one without (−SFM) sugar filter mud. The results highlighted that all crop growth and yield parameters benefited more from the domestic waste compost than from the brassica straw compost. Moreover, the addition of sugar filter mud to the compost further boosted the crop performance. Based on the above results, we concluded that the addition of sugarcane filter mud to locally available composts is a feasible approach for more sustainable production of sweet maize, combining efficient waste disposal and the provision of organic matter to the soil.

Increase in the Amount of Soil Organic Matter and Populations of Microorganisms by Addition of Different Types of Compost for Sustainable Agriculture

Maintaining a positive balance of organic matter in arable land is a fundamental issue for sustain¬able agriculture. Environmentally friendly and cost-effective solutions applicable to large areas and also to small farms are needed. This is especially true for areas affected by environmental processes, leading to deteriorating soil fertility and limiting opportunities for organic farming. Organic fertilization through composting is an effective method of maintaining soil fertility. Due to shortage of traditional organic fertil¬izers, new sources of organic matter are being sought, such as agricultural waste, sewage sludge, household or industrial waste. Identification of waste products and possibilities for their use in compost production with a certain composition was carried out. Physico-chemical characteristics of the starting materials be¬fore composting was carried out. Estimation of their effectiveness as soil improvers on two types of soils - leached cinnamon forest soil from the area of village of Chelopechene, near Sofia, Bulgaria and alluvial meadow soil from the area of Tsalapitsa, Plovdiv region, Bulgaria was accomplished. When composting the ameliorants with the first type of soil, all additives led to positive changes in soil organic matter, while composting ameliorants with the second type of soil, the added organic materials provided a lower degree of storage of organic matter. Therefore, compost addition to leached cinnamon forest soil is more reason¬able, ensuring good stock in the form of humin. Application of compost led to increase in the populations microorganisms, including bacteria and fungi, which is a good indicator of increased soil microbial activity in respective treatments.

Efficacy of compost made of food wastes with organic amendments for a sustainable and environment friendly agricultural system

Organic amendments in composts are found to be an effective solution for the sustenance of the agriculture system, especially in reducing greenhouse gases. The objective of this research was to develop a compost type made with organic/mineral amendments for environment friendly agriculture. This preliminary study reports the quality of the compost made with different organic/mineral amendments, the performance of different compost types with and without amendments, the potential of organic amendments in reducing greenhouse gas emissions for an environmentally friendly agriculture and the best type of co-compost. Food waste was co-composted with banana peels, egg shells, onion peels and papaya peels individually with a 1:1 ratio; and the quality of the mature compost was measured using the physicochemical parameters. Six seedlings of Capsicum annuum were planted in potting mixtures with a 1:1:1 ratio of co-compost, top soil and sand. The positive control experiment was done with food waste compost and the negative control was with no compost. The performance of the six treatments were evaluated by measuring the plant height, the number of leaves in a plant, number of buds, number of pods and the average weight of pods. CO2 emission of the six treatments were measured by absorbing it to calcium hydroxide. The results showed that the co-compost made with banana peels was the best amendment, with better physicochemical characteristics and performance in growth. None of the treatments gave a significant reduction on the emission of carbon dioxide.

Degradation of acetochlor in soil by adding organic fertilizers with different conditioners

Adding compost to degrade acetochlor in soil is an important way to reduce its impact on the environment. The addition of conditioner improved the generation of compost products with specific effects. Thus, in order to determine a better composting conditioner for degradation of acetochlor, the dissipation of acetochlor in unmodified and different composting conditioners (zeolite, biochar, zeolite + biochar) was studied by pot experiment. The effects of residual concentrations of acetochlor (1.02, 1.56 and 2.08 mg·kg−1) and soil types (phaeozem and stagnic soil) on the dissipation of acetochlor were evaluated. The community structure of microbial fungi and bacteria in soil was determined by high-throughput sequencing to evaluate the change of microbial community in the soil with acetochlor residue. The results showed that compost types, soil types and the concentration of acetochlor residue in soil had different effects on the dissipation of acetochlor in soil. The addition of biochar and zeolite could significantly increase the degradation rate of acetochlor in soil. When the same compost was added, the degradation of acetochlor was fastest in phaeozem with a degradation rate of 95.13%. The degradation rate of acetochlor in black soil was higher than that in stagnic soil. High throughput sequencing results showed that the application of organic fertilizer changed the structure of soil microbial community. Luteibacter, Sagenomella and Remersonia had the highest correlation with the degradation of acetochlor in soil. The analysis of microbial community showed that·Luteibacter (24.49%),·Sagenomella (1.55%) and Remersonia (3.14%) played important roles in the degradation of acetochlor. Artificial neural network analysis showed that the sensitivity of acetochlor degradation rate to the conditioner in the soil was biochar (60.07%) > biochar + zeolite (21.19%) > blank (13.97%) > zeolite (4.77%). These results showed that biochar compost was more conducive to the dissipation of acetochlor in soil after application, and the application of organic fertilizer affected the soil microbial community structure.

Designing an optimal multi-objective model for a sustainable closed-loop supply chain: a case study of pomegranate in Iran.

The competitive environment in the global market makes most countries look for better ways to solve their problems. Food waste is the largest concern facing the food security of the world. Not paying attention to process of pomegranate wastes, such as separating the peel from the other parts and ignoring the cost of using artificial intelligence for pest control in gardens and the cost of maintaining the processed products are the gaps of previous researches. To cope with this challenge, recent studies have presented sustainable closed-loop supply chains (SCLSCs) as a strategic approach and a competitive advantage. The present study distinguishes itself from other studies by using the artificial intelligence technology in a supply chain along with the reverse logistics section, i.e., waste recycling. This paper proposes a design for a CLSC pomegranates. The corresponding logistics network is designed for several periods and covers manufacturers, distribution centers, customers, factories, recycling centers (compost centers), and compost end user (compost markets). Using reverse logistics, the wasted pomegranates are also converted into recycled products including ethanol, as an automotive fuel and a renewable energy, and a type of compost processed as an organic fertilizer. The goal of proposed model is to minimize the costs of supply chains, reduce the supply risks involved, and increase the profits for gardeners and investors in the public and non-profit agriculture sectors in Iran. The first pareto solution is 1,869,908.962, 2172.638 and 65.926, and the CPU time is 412 Ms. The results show a rise in the maximum supply risk occurs in the total cost and risk but a reduction in the accountability of the network and also an increase in the disruption period findings in increased total cost and risk of the network, while it first increases and then decreases the accountability.

Utilizing Compost Soil Conditioner in Beach Sand Soil as a Palm Oil (Elaeis guineensis Jacq) in Pre-nursery Media

The objective of this study was to assess the effect of the type and dose of compost on the growth of oil palm seedlings in pre nursery with coastal sandy soil. The other objective is to know the effect of the type of compost on the growth of oil palm seedlings in pre nursery with coastal sandy soil. Lastly, the study examines the right dose of compost that provides the best growth of oil palm seedlings in pre nursery with coastal sandy soil. The experimental design was set in a factorial completely randomized design (CRD) consisting of two factors from April to June 2020 at the Tridharma Research Station Faculty of Agriculture, INSTIPER. The first factor is the type of compost which consists of 2 levels, Lamtoro compost, and vermicompost. The second factor is the dose of compost consisting of 4 levels: control (without compost), 50 gr compost/polybag, 75 gr compost/polybag, and 100 gr compost/polybag. The research data were analyzed using analysis of variance (α =0,05), and if there was a significant effect, it was continued with the Duncan multiple range test ( α = 0,05). Parameters observed included seedling height, total leaf, leaf width, stem diameter, shoot dry weight, root dry weight, root length, and total roots. The results showed that no combination of types and doses of compost significantly affected the growth of oil palm seedlings in pre-nursery. Using vermicompost can significantly increase oil palm seedlings' leaf area and root dry weight. Using compost at a dose of 50 g/polybag increased seedling height, stem diameter, and root dry weight in pre-nursery of oil palm seedlings.

Effects of chemical additives and mature compost on reducing nitrogen loss during food waste composting.

This study is aimed at adding different types of mature compost and sulfur powder, as additives into food waste composting to investigate the effect on nitrogen loss and compost maturity. The composting experiment used the in-vessel composting method and was conducted continuously for 15days. High-throughput sequencing was used to analyze the bacterial community during composting. Results showed that the secondary fermentation mature compost mixed with sulfur powder group had the most reduction of ammonia emission (56%) and the primary fermentation mature compost amendments were the most effective for nitrous oxide emission reduction (37%). The temperature, pH, and nitrogen forms of transformation of the pile significantly affect the nitrogen loss during composting. Firmicutes helped to promote the rapid warming of the pile, and Actinobacteria and Proteobacteria played an important role in decomposition of organic matter. Thermobifida and Ureibacillus had a main contribution to the rapid degradation of organic matter in the process of composting. The relative abundance of nitrogen-fixing bacteria was higher, and the relative abundance of predominantly ammonifying and denitrifying bacteria was lower than the control group, with the addition of different additives.

THE EFFECT OF AGRICULTURAL WASTE COMPOST ON THE POPULATION OF AZOTOBACTER, AZOSPIRILLUM, AND PHOSPHATE SOLUBILIZING BACTERIA IN CORN PLANT MEDIA ON INCEPTISOLS JATINANGOR

Plants require nutrients in order to grow. One method is to provide organic fertilizer in the form of compost. rice straw, Oil Palm Empty Fruit Bunch (OPEFB), and sugarcane bagasse can all be used as compost material. The purpose of this study is to see how different types of agricultural waste compost affect the population of beneficial bacteria such as Azotobacter sp., Azospirillum sp., and Phosphate Solubilizing Bacteria (PSB) on maize planting media in Jatinangor. The study was carried out at the screen house of Ciparanje Experimental Garden in Jatinangor District, utilizing a Randomized Block Design with 9 treatments and three replications. The treatments included a control (no treatment) and three dose levels (5 tons.ha-1 , 10 tons.ha-1 , and 15 tons.ha-1 ) of each type of compost (oil palm empty fruit bunch, sugarcane bagasse, and rice straw). The findings revealed that the use of various types of agricultural waste compost influenced the population of Azotobacter sp., Azospirillum sp., and PSB. When compared to the compost treatment of rice straw and bagasse, the application of OPEFB compost at a dose of 15 tons.ha-1 produced a greater population of Azotobacter sp. 106.43 x 107 cfu.g-1 . While the population of Azospirillum sp. increased by 2.20 x 107 cfu.g-1 as a result of the 15 tons.ha-1 compost of OPEFB, the effect was similar to that of rice straw and bagasse compost. PSB population increased at 15 tons.ha-1 of rice straw compost to 3.73 x 104 cfu.g-1 but not different from 15 tons.ha-1 of OPEFB compost. Compost can be used as an environmentally friendly fertilizing alternative to enhance the population of beneficial bacteria in corn growth media and increasing nutrient availability for plants.

MANAGEMENT OF AEROBIC FERMENTATION TECHNOLOGIES’ MICROBIOLOGICAL PROCESSES

All methods of compost producing to research and computer’s modeling were subjected: in burts mixing by mechanisms of various designs is carried out, so as in rotating drums and cultivation rooms. The research results showed that in the burts, at existing mechanisms using, after 5-fold mixing non uniformity of 36-51% was obtained, whereas for highquality compost, the non uniformity within 10-15% should be. There at drums’ rotating using, the ammonia release has been established, that indicates putrefactive objects’ developing, so mold and the other harmful processes called ammonification, at which organic matter decomposing. The method of compost preparation in cultivation rooms has a certain perspective. A group of scientists from various institutes and departments was tasked with a highly efficient method developing when organic fertilizers producing at existing shortcomings eliminating. Based on academicians Tikhonovich I.A. and Panikov N.S. scientific developments the abovementioned scientists group’s research directions were determined. Almost 30 years experience of these authors and other scientists allowed to develop the byproducts technology aerobic fermentation of agriculture and other industries, at various industry and international conferences presenting. This many years work’s real result is a new type of compost - a soil-biological complex (PBK) producing. An application dose of this product is 6-7 t/ha, that is equivalent to 40 t/ha of traditional compost at other agrotechnical properties improving. The PBK preparation method as aerobic fermentation’s technology is called. It is based on the soil’s microbiological community of microorganisms reproducing. At the same time, enzymes by microorganisms’ accelerating the humus formation’s processes in 1013 or more times has produced.

Utilization of Trichoderma asperellum strain TR3, and types of compost on the growth of Palu valley red onion plant

Utilization of Trichoderma asperellum strain TR3, and types of compost on the growth of Palu valley red onion plant

The use of developed mushroom compost in crop cultivation technology

The scientific work analyzes experimental data on the cultivation of potatoes and rapeseed using elements of biologization in conditions of Ryazan region. Two-year studies have been carried out to study the effect of developed mushroom compost on the yield of potato tubers and rape of various varieties cultivated on dark gray forest soils of Ryazan region. The use of spent mushroom compost is a promising technique that allows to increase the productivity of crops and obtain environmentally friendly products. When cultivating potatoes and spring rape, first, bare fallow was used as a precursor, and then the introduction of 84 t/ha of fresh mushroom compost for the main processing of potatoes and 80 t/ha for spring rape, immediately after harvesting mushrooms in the form of developed blocks. In the second option, 95 t/ha of mushroom compost was used for potatoes and 89 t/ha was used for spring rape, after a year of storage of spent mushroom blocks. As a result of the use of two types of mushroom compost, the foliage of plants improved: on average, the largest increase in leaves was obtained in the option with fresh compost. Its use immediately after harvesting mushrooms exceeded the control by 12.8%, and the use of compost after a year of storage caused 7.6% increase. The highest average marketability of tubers for all varieties was noted in the option with fresh mushroom compost and averaged 80.8% for all varieties, which was 9.1% more than the control. The productivity of spring rape seeds increased when using mushroom compost as a fertilizer. The introduction of fresh compost under the main tillage increased the rape productivity by 2.9 dt/ha, and rotted compost by 1.9 dt/ha compared with the control. For all varieties of potatoes, the yield with fresh mushroom compost increased by 37.8 dt/ha or 20.1% compared to the control, and for the variant after a year storage of mushroom compost, the yield increased by 23.8 dt/ha or 11.3 %.

EFFECT OF SEVERAL TYPES AND DOSES OF COMPOST FROM CELLULOLYTIC MICROBIAL DEGRADATION ON AGGREGATE STABILITY OF ULTISOLS SOIL

Ultisolss are one of the marginal soil types that dominate drylands in Indonesia. The main problem of Ultisolss is poor nutrient conditions and low physical properties. The productivity of this soil is low because it has low soil aggregate stability and also has poor biological and physical properties. Research on superior cellulotic microbes in termite nests used as a starter for the decomposition of agricultural waste and changes in the physical properties of Ultisols soil needs to be carried out to determine the effect of applying the type and dose of compost resulting from the degradation of cellulotic microbes to improve the physical properties of Ultisols soil. This experiment was conducted from July 2019 to September 2021 at Ciparanje Experimental Farm, Faculty of Agriculture, Univesitas Padjadjaran. The method used was experiment with Randomized Block Design consisting of 9 treatments and repeated 3 times, namely straw compost 5 tons/ha, 10 tons/ha, 15 tons/ha; sugarcane bagasse compost 5 tons/ha, 10 tons/ha, 15 tons/ha; oil palm empty fruit bunch compost 5 tons/ha, 10 tons/ha, 15 tons/ha. Based on the research of compost degradation results by cellulotic microbes, rice straw compost 15 tons/ha can provide the best aggregate stability results.