Concentration Of Organic Fertilizer Research Articles

Pertumbuhan dan Produksi Tanaman Sawi Pakcoy (Brassica rapa L.) Akibat Dibudidayakan pada Berbagai Komposisi Media Tanam dan Konsentrasi Pupuk Organik Cair dengan Sistem Vertikultur

Pakcoy (Brassica rapa L.) is one of the important and popular vegetable crops in Indonesia. City development and massive urbanization have resulted in the shrinking of agricultural land in urban areas. Home gardens have great potential if managed optimally and planned. Therefore, the concept of urban farming with the vertical farming method can be a solution. This study aimed to determine the optimal composition of planting media and liquid organic fertilizer (LOF) concentration for the growth and production of pakcoy plants. This study used a completely randomized design (CRD) with two factors. The first factor was the composition of the planting medium, which consisted of three levels: soil, compost, and goat manure with a ratio of 1:1:1, 1:1:2, and 1:2:1. The second factor was the concentration of LOF and urea, which consisted of four levels: 1 gram urea, 2 ml/liter water, 4 ml/liter water, and 6 ml/liter water. The results of the study showed that the combination of planting medium composition and LOF concentration had an effect on all observation parameters. The combination of planting medium composition 1:1:2 and LOF concentration of 4 ml/liter water produced the best results for all observation parameters, namely plant height, number of leaves, total fresh weight, fresh head weight, fresh root weight, and plant dry weight. Key words : Pakcoy mustard, verticulture, media composition, concentration, LOF

The Effect of Moringa Leaf (Moringa oleifera L.) Liquid Organic Fertilizer with Different Concentrations on the Growth of Beans (Phaseolus vulgaris L.)

One of the efforts to increase the production of chickpea plants to meet market needs is to optimally utilize the waste of Moringa leaves by converting Moringa leaves into liquid organic fertilizer so that it is easier and more practical to apply and easily absorbed by plants. Liquid organic fertilizer plays a role in improving the physical, chemical and biological properties of the soil, which can increase the production of upright bean plants. This study aims to determine the effect of liquid organic fertilizer (POC) of Moringa leaves with different concentrations and to determine the most effective concentration of liquid organic fertilizer (POC) on the growth of green beans (Phaseolus vulgaris L.). The method used is an experimental method with a completely randomized design (CRD). The treatment consisted of a concentration of 16% chicken manure (as a control), POC concentrations of 60%, 65%, 70%, 75% and 80%. The results showed that there was an effect of different concentrations of liquid organic fertilizer (POC) from Moringa oleifera L. on the growth of plant height, number of leaves and wet weight in bean plants (Phaseolus vulgaris L.). The most effective concentration of liquid organic fertilizer (POC) from Moringa leaves is at a concentration of 80% with an average plant height of 41.2 cm, an average number of leaves of 15.25 leaves and an average wet weight of 3.98 grams. number of leaves and fresh weight on chickpea plants (Phaseolus vulgaris L.). The most effective concentration of liquid organic fertilizer (POC) from Moringa leaves is at a concentration of 80% with an average plant height of 41.2 cm, an average number of leaves of 15.25 leaves and an average wet weight of 3.98 grams. number of leaves and fresh weight on chickpea plants (Phaseolus vulgaris L.). The most effective concentration of liquid organic fertilizer (POC) from Moringa leaves is at a concentration of 80% with an average plant height of 41.2 cm, an average number of leaves of 15.25 leaves and an average wet weight of 3.98 grams.

OPTIMALISASI KONSENTRASI PUPUK ORGANIK CAIR BIOGUSUAN TERHADAP RESPON PERTUMBUHAN VEGETATIF TANAMAN SAWI HIJAU (Brassica juncea L.)

Liquid organic fertilizer is a complete fertilizer because it contains macro and micro elements. The purpose of this study was to determine whether there was an influence or concentration of Bio GuSuan liquid organic fertilizer on the vegetative growth response of mustard greens (Brassica juncea L.). This research is an experimental research. The independent variables is the concentration of liquid organic fertilizer, namely the concentration of 1%; 2%;3%;4%; 5%, and control (0%). Data analysis used statistical analysis with one way analysis of variance (ANOVA) test with a significance level of 5%. Based on the results of data analysis, it can be concluded: (1) There is an effect of Bio GuSuan liquid organic fertilizer on the vegetative growth of mustard greens (Brassica juncea L), (2) Bio GuSuan liquid organic fertilizer with a concentration of 5% in treatment (T5) is the most optimal concentration for the vegetative growth of mustard greens (Brassica juncea L). Leaf area is 5.2 and the number of leaves is 3,800. Based on the F table value with a significance level of 5%, (the sum of inter =3 and the sum of inner =20), the H0 rejection limit is 3.10.

The Availability of Soil N, P, K, and Mustard Yield after the Application of Liquid Organic Fertilizer from Household Waste in Ultisols

Ultisols are one of the dominant soil orders in Indonesia, accounting for approximately 25% of the total land area. The main problem of this soil is high aluminum (Al) saturation with low pH and plant nutrients. The study was intended to determine the effect of liquid organic fertilizer (LOF) from household waste on the availability of N, P, K, and mustard yield in Ultisols. The research used a complete randomized design (CRD) with six concentrations of liquid organic fertilizer of household waste. The treatments were repeated four times. The treatment included control, 10, 20, 30,40, and 50 ml LOF in a liter of water. The study revealed that the liquid organic fertilizer from household waste increased 1.06 folds of total soil N and 1.04 folds of exchangeable-K compared to the control but did not affect available P. Also, soil pH was comparable among treatments. The greatest concentration of LOF (50 ml per liter of water) exhibited the highest yield of mustard, indicated by the highest fresh and dry shoot weight. In general, the study contributes to the development of eco-frindly agriculture.

The Effect of Water Hyacinth (Eichhornia crassipes) Organic Fertilizer on The Vegetative Growth of Carrot (Daucus carota), Royal Chantenay Variety

This study conducted in Gasabo District, Nyacyonga marshland aimed to investigate the effect of water hyacinth (Eichhornia crassipes) organic fertilizer on the vegetative growth of the Royal Chantenay variety of carrot (Daucus carota). The experiment was conducted using a randomized complete block design (RCBD) with three replications. Four treatments were applied: T1 (control, no fertilizer), T2 (NPK 17-17-17), T3 (25% water hyacinth organic fertilizer + 75% NPK 17-17-17), and T4 (50% water hyacinth organic fertilizer + 50% NPK 17-17-17). The growth parameters assessed included plant height, leaf number, and root diameter. Results showed that the application of water hyacinth organic fertilizer significantly influenced the vegetative growth of Royal Chantenay carrot plants. T3 and T4 treatments enhanced plant height, leaf number, and root diameter compared to the control (T1) and NPK 17-17-17 (T2). The highest vegetative growth parameters were observed in T4, indicating that a higher concentration of water hyacinth organic fertilizer positively affected the growth of carrot plants. The findings suggest that water hyacinth organic fertilizer can be a viable alternative to chemical fertilizers in promoting the vegetative growth of Royal Chantenay carrot plants. The utilization of water hyacinth as an organic fertilizer can contribute to sustainable agricultural practices by reducing dependence on synthetic inputs.

Response of Growth and Seed Yield of Mung Bean (Vigna radiata L.) to Chicken Manure and Banana Hump Liquid Organic Fertilizer Application

Mung bean is highly important legume crop in Indonesia. Attempts to improve the yield and quality of mung bean seeds can be done through improving the planting media by adding organic fertilizer. The objective of this study was to determine the response of growth and seeds production of mung bean due to chicken manure and banana hump organic fertilizer. The research was performed in the greenhouse at the Balai Pengujian Standar Instrumen Tanaman Aneka Kacang (BSIPTAKA), Muneng Probolinggo. This study was structured in a factorial block design with three replications executed randomly. The first factor was doses of CM consisting of 0, 8.3, 16.7, and 25 ton/ha. The second factor was concentrations of banana hump liquid organic fertilizer (LOF) consisting of 0, 10, 20, and 30 ml/L. The result showed that doses of CM had a significant effect on plant height at 10 DAP, seed weight per plant, and seed yield. The interaction between CM doses and banana hump LOF was able to increase leaf chlorophyll index at 30 DAP. Combination of 16.7 ton/ha CM and 20 ml/L banana hump LOF produced the highest average chlorophyll index of 55.07 CCI. Keywords: Chlorophyll index, Manure, Mung bean, Organic fertilizer, Seed.

Pengaruh berbagai konsentrasi pupuk organik cair berbahan dasar tangkos kelapa sawit terhadap pertumbuhan semai pala (Myristica fragrans Houtt) di lapangan

This research was carried out for two months, from July to September 2023 located at the Arboretum of the Faculty of Forestry, Tadulako University, Palu, Central Sulawesi. This study used the Complete Randomized Design (RAL) method, consisting of Five Treatments M0 = Soil Without POC (control), M1 = Concentration 45% (450ml POC + 550ml water), M2 = Concentration 50% (500ml POC + 500ml water), M3 = Concentration 55% (550ml POC + 450ml water), M4 = Concentration 60% (600ml POC + 400ml water) Of the five treatments repeated 6 times each, so that a total of thirty (30) treatment samples were used. The parameters observed in this study were the increase in seedling height, the increase in the number of leaves, and the increase in stem diameter. The research data was analyzed using fingerprint analysis. Further tests were carried out using the Real Difference Test (BNJ) at the level of 5%. The results of fingerprint analysis show that the application of various concentrations of liquid organic fertilizer made from oil palm tangkos has a significant effect on the increase in seedling height, number of leaves, and stem diameter in the field. The 55% concentration treatment (M3) gave the best effect with an average height increase of 8.25cm, an increase in the number of leaves by 2.5 strands and an increase in stem diameter by 1.81mm.

Effect of Nasa Liquid Organic Fertilizer (LOF) Concentration and Varieties on Growth and Production of Lettuce Plants (Lactuca Sativa L.) with the DFT Hydroponic System

Effect of Nasa Liquid Organic Fertilizer (LOF) Concentration and Varieties on Growth and Production of Lettuce Plants (Lactuca sativa L.) with DFT Hydroponic System. Lettuce (Lactuca sativa L.) is a short-lived leaf vegetable that can be grown in both highlands and lowlands. Generally consumed in a raw state so that hygiene is a top priority. Currently the demand for lettuce has not been fulfilled optimally, this is due to constraints in cultivation which causes low quality and yield of lettuce production. Efforts to increase lettuce production can be done by adding organic fertilizers as a source of plant nutrition and selecting the right lettuce varieties. This study aims to determine the interaction between the concentration of Nasa LOF fertilizer and lettuce varieties on the growth and production in hydroponic cultivation with DFT system. This study used a factorial randomized block design with a 2-factor treatment design. The first factor is the concentration of Nasa LOF with 3 levels, namely 4 mL/L; 6 mL/L; 8 mL/L and the second factor is the lettuce variety with 3 levels, namely the new grand rapid variety of lettuce; karina; kriebo le 873 which consisted of 3 groups. The results of this study showed an interaction between the concentration of Nasa LOF and lettuce varieties on the observed variables of plant height (24 DAP and 31 DAP), number of leaves (31 DAP) and wet weight per lettuce plant (31 DAP). The single treatment of Nasa LOF concentration had no significant effect on all variables observed in lettuce. The single treatment of lettuce varieties affected the observed variables of plant height (10 DAP and 17 DAP), number of leaves (24 DAP) and root length (10 DAP, 17 DAP, 24 DAP, and 31 DAP)

Effect of Concentration of Liquid Organic Fertilizer and Arbuscular Mycorrhizal Fungi (CMA) on Growth and Red Bean Plant (Phaseolus vulgaris L)

This study aims to determine the interaction between the effect of liquid organic fertilizer concentration and arbuscular mycorrhizal fungi (CMA) on the growth and yield of red bean plants (Phaseolus vulgaris L.). The experiment was conducted in Nusaherang Village, Nusaherang District, Kuningan Regency, from July to September 2022. The research method used is the experimental method of Group Random Design (RAK) factorial pattern. The treatment consists of two factors and is repeated three times. The first factor is the concentration of liquid organic fertilizer (P), which consists of three levels, namely: P1 (5 ml / l), P2 (10 ml / l), and P3 (15 ml / l). The second factor of arbuscular mycorrhizal fungi (C) consists of three levels, namely: C1 (5 g / plant), C2 (10 g / plant), and C3 (15 g / plant). The primary observation data is processed using variance analysis; if there is a noticeable effect, the test is continued with the Duncan multiple distance test. The results showed a real interaction between the concentration of liquid organic fertilizer and arbuscular mycorrhizal fungi on plant height aged 21 HST, root length aged 21 HST, number of flowers aged 35 HST, and number of pods per red bean plant. The concentration treatment of liquid organic fertilizer has an independent effect on the number of leaves aged 21 HST. In comparison, the treatment of arbuscular mycorrhizal fungi has an independent effect on the number of leaves aged 21 and 28 HST and the number of seeds per pod. The treatment of liquid organic fertilizer and arbuscular mycorrhizal fungi has the same effect on yield variables, so the average weight of fresh red bean beans per plot is 626 g (0.63 kg) or equivalent to 1.6 tons/ha, assuming 80% of the land is effective.

Physiological Response of Three Melon Varieties Applied to Trichokompos Planting Media and Various Concentrations of Liquid Organic Fertilizer

The aim of this research is to determine the effect of providing trichocompost planting media composition, varieties and various concentrations of liquid organic fertilizer on the physiology of melon plants. This experiment used a separate plot design in groups, the Main Plot was the planting medium (m) which consisted of 3 planting media compositions, m1: Soil Composition: Trichokompos = 1:1, m2 : Soil Composition : Trichokompos = 1:2, m3: Soil Composition : Trichokompos = 2:1 and Subplots are 3 types of melon varieties (v), namely: v1 = Glamor F1, v2 = Rio F, v3 = Noni F1, and Children's Plots are the concentration of eco farming (k), namely: k0 = Without eco farming (control), k1 = Eco farming 5 ml/ liter of water, k3 = Eco farming 10 ml/ liter of water. The results of this research indicate that the composition of 2 soil planting media: 1 trichocompost, Rio F1 variety and a liquid organic fertilizer concentration of 1 ml/liter of water is recommended to improve the physiological phase of melon plants.

Pengaruh Penggunaan Pupuk Organik Cair Nira Aren (<i>Arenga pinnata</i>) Terhadap pertumbuhan Tanaman Bawang Merah (<i>Allium ascalonicum</i>)

The need for red onions has not yet been balanced by the amount of production, so the government always brings in red onions through imports to meet the community's needs. The aim of this research was to determine the effect of the growth of shallots (Allium ascalonicum) on the application of liquid organic fertilizer from sap (Arenga pinnata). The approach used in this research is quantitative research. The research was carried out using a completely randomized design (CRD) with different concentrations of liquid organic fertilizer from palm sap, with concentrations of 0 ml, 20 ml, 40 ml, 60 ml, 80 ml and 100 ml, a total of 6 treatments, with 5 replications. The results of the research show that based on the ANOVA test, the calculated F value was 1,954, while the F table (0.05) on the diameter of shallot plant bulbs shows that there is a significant influence provided that F calculated>F table. Apart from that, based on the results of the anova test, the parameters of plant height (0.178), the significant value of the number of plant leaves (0.067), and the significant value of the diameter of the plant tuber (0.133) so that the research results obtained indicate that liquid organic fertilizer of sugar palm sap has an effect on height growth. plants, number of leaves, and diameter of shallot bulbs (Allium ascalonicum).

The Growth of Rice Plants on Combination of Liquid Organic Fertilizer Based of the Water Hyacinth

Aims: This study aims to obtain a combination of liquid organic fertilizer (LOF) concentrations of palm wine and water hyacinth on the growth of rice plants.
 Study Design: This research used a randomized block design with thri (3 replications).
 Place and Duration of Study: This research was conducted in Baolan District, Tolitoli Regency, Central Sulawesi Province with an altitude of 20 meters above sea level (MSL) from September 2022 to January 2023.
 Methodology: consisting of six treatments, namely Ao = control, A1 = 80 ml LOF of water hyacinth + 20 ml LOF of palm wine + 900 ml of water, A2 = 70 ml LOF of water hyacinth + 30 ml palm wine + 900 ml water, A3 = 50 ml water hyacinth + 50 ml palm wine + 900 ml water, A4 = 40 ml water hyacinth +60 ml palm wine + 900 ml water, A 5 = 30 ml water hyacinth + 70 ml of palm wine + 900 ml of water. Each treatment was applied to the pot as media and each pot was planted with 1 seed.
 Results: The results of the study was shown that the combination of water hyacinth and palm wine had a significant effect on plant height, number of tillers, panicle length and grain weight per panicle.
 Conclusion: Application of liquid organic fertilizer with a combination of water hyacinth and palm wine can increase rice plant growth, increase the number of tillers, panicle length and seed weight per panicle.

Utilization of Water Spinach Harvest Waste as Liquid Organic Fertilizer and Compost on the Growth and Yield of Large Chili Plants (Capsicum Annuum L.)

The aim of the research was to determine the effect of giving concentrations of liquid organic fertilizer and doses of compost from water spinach harvest waste on the growth and yield of large chili plants (Capsicum annuum L.). The results of the research showed that the administration of various concentrations of LOF and doses of compost from kale harvest waste had a significant effect on the height of large chili plants (Capsicum annuum L.) at 84 DAP, and had no significant effect on the number of leaves at 84 DAP, flowering age, number of flowers and the number of large chili plants (Capsicum annuum L.). The combination of 5 ml/l LOF and no compost (P1K0) treatment resulted in the highest average plant height at 84 DAP (38.33 cm), and the highest average number of plant leaves (56.00). The combination of treatment with a LOF concentration of 5 ml/l and the addition of 250 g compost per plant (P1K1) resulted in the fastest average flowering age (18.67 DAP). The combination of treatment with a LOF concentration of 10 ml/l and the addition of 250 g compost per plant (P2K1) produced the highest average number of flowers (10.33 pieces) and also produced the highest average number of fruit (2.33 pieces).

Pengaruh Kombinasi Pupuk Kandang Sapi dan Konsentrasi Pupuk Organik Briket terhadap Pertumbuhan dan Hasil Tanaman Marigold (Tagetes patula L.) Varietas Prancis Petite Orange .

Marigold (Tagetes patula L.) is an ornamental plant that has benefits in various sectors. The quantity of marigold flower production is related to the cultivation technique used. Soil conditions also affect the level of plant fertility. This can be overcome by means of fertilization. The aim of this study was to obtain a combination of doses of cow manure and bricket organic fertilizer concentration which gave the highest growth and yield of marigold plants (Tagetes patula L.) var French Petite Orange. The research was conducted at the Soursop Gardens of Casamora, City Parks and Forest Service, Ciganjur, Jagakarsa, DKI Jakarta in March - June 2023. The research method used was an experimental method with a Single Factor Randomized Block Design (RBD) consisting of 5 treatments repeated 5 time. The treatment consisted of A (0 ton/ha Cow Manure + 0 ml Organic Fertilizer Briquette) (control), B (15 ton/ha Cow Manure + 1.5 ml/liter of water Briquette Organic Fertilizer), C (20 ton/ha Manure Cattle + 1.5 ml/liter of water Organic Fertilizer Briquettes), D (15 tons/ha Cow Manure + 3 ml/liter of water Organic Fertilizer Briquettes), E (20 tons/ha Cow Manure + 3 ml/liter of Briquette Organic Fertilizer water ). The results showed that there was a significant effect of giving a combination of doses of cow manure and briquette organic fertilizer concentration in treatment E (20 tons/ha of cow manure + 3 ml/liter of water of briquette organic fertilizer) on flower diameter (32.49 mm), number of flowers (7.47), the number of branches (6.07) the yield of fresh weight of flowers (10.19 g), the yield of dry weight of flowers (3.74 grams), the yield of total fresh weight of plants (192.69 g), and the yield of dry weight total plant (54.55 g).

Insights into Opposite and Positive Effects of Biochar and Organic Fertilizer on Red Soil Properties and Growth of Pennisetum giganteum

Biochar (BC) and organic fertilizers (OFs) are both organic soil amendments that can be used to improve soil quality, but their effects on soil physicochemical properties and microbial structures may be different. Comparative studies can help us understand the advantages and disadvantages of different types of soils. In the current research, five treatments, including a control group (CK), two concentrations of biochar (2% BC and 4% BC), and two concentrations of organic fertilizer (2% OF and 4% OF) and their effects on soil properties, enzyme activities, and bacterial diversity were evaluated. The BC and OF significantly increased the soil EC, pH, and soil nutrients (p < 0.05). The 2% BC increased the biomass of Pennisetum giganteum by 41.7%. The 4% BC and OF reduced the biomass of P. giganteum. Furthermore, the observed decrease in the P. giganteum yield following the application of the 4% BC can be attributed to reductions in the available phosphorus (AP) and CaCl2-P, as well as alterations in the soil enzyme activity. However, the negative impact of OFs on crop yield may be associated with an increased EC, elevated abundance of soil-borne pathogens, and decreased levels of beneficial microorganisms. In summary, a comparative study of the effects of BC and OF on the growth of P. giganteum in acidic soil is of great significance for improving the soil quality, promoting the development of organic agriculture, protecting the environment, and promoting land reclamation.

Test On The Implementation of Compound Biodive Poc Inincreasing The Germination Rate of Sugar Cane Cuttings (Sugar Factoryl.)

The aim of this research was to determine the effect of various concentrations of compound biological liquid organic fertilizer (POC) on the germination of plant cuttings. This research method uses a Randomized Group Design (RAK), with 1 treatment factor, namely Biological POC Concentration (K) consisting of 8 treatment levels, namely 0 ml, 1 ml, 2 ml, 3 ml, 4 ml, 5 ml, 6 ml, and 7 ml Biological POC per liter of water. This experiment was repeated 3 times with each treatment containing 2 sample plants, so that 24 treatments were obtained. Results The best statistical value was achieved by the K4 treatment, namely a concentration of 4 ml of Biological POC per liter of water for all observed parameters, including the percentage increase in growth compared to the control treatment so that the K4 treatment was considered more effective and efficient in the initial growth of sugarcane cuttings.

Dendrobium sp. subcultures with instant Vacin Went media against many concentrations of fruit waste liquid organic fertilizer plus

Orchids are ornamental plants in great demand by collectors and the public due to the varieties colors of Orchid flowers and the price. This study aims to determine the effect and obtain the concentration of the application of fruit waste liquid organic fertilizer plus on the growth and development of a Dendrobium sp. sub-culture on VW media in vitro. The research had been carried out from May to August 2022 at the Biotechnology Laboratory of Kupang State Agricultural Polytechnic. The study design used a single-factor complete randomized design consisting of six treatments and four replications. The tested factors were six level of concentrations of fruit waste liquid organic fertilizer plus instant VW media in vitro, which are: instant VW media; instant VW media + 2.5 ml/L; instant VW media + 5 ml/L; instant VW media + 7.5 ml/L; instant VW media + 10 ml/L; and instant VW media + 12.5 ml/L. The results showed that the best concentration of Fruit Waste Plus LOF for the growth of Dendrobium orchid explants is the treatment instant VW media + 7.5 ml/L LOF, which is shown by the time of bud emergence (10.75 days after planting), number of shoots (2.38), shoot height (3.5 mm), number of roots (1.38), and root length (2.5 mm).

Effect of application liquid organic fertilizer Bio3 with some concentrations to carrot (Daucus carota L.) yield

Bio3 Liquid Organic Fertilizer is a liquid organic fertilizer made from fermented fruit waste with local activator JB3. This fertilizer was tested on carrot plants to determine the effect of giving several concentrations of POC Bio3 on carrot yields. The research was conducted in July-November 2022 in Tobu Village, South Central Timor District, East Nusa Tenggara Province, Indonesia. This study used a single factor randomized block design (RBD) consisting of 9 concentrations of liquid organic fertilizer (LOF) Bio3 (0, 5, 10, 15, 20, 25, 30, 35, 40 ml/L water) and 3 replications. The parameters studied were tuber diameter, tuber length, tuber wet weight per plot. The results obtained were that the application of Bio3 liquid organic fertilizer to carrot plants had a significant effect on tuber diameter (3.30 cm), tuber length (16.22 cm), tuber weight per plant (84.61 g) and tuber weight per plot (4,230 kg). Based on effectiveness, efficiency and results that are not significantly different, a concentration of 25 ml/L of liquid organic fertilizer Bio3 is the best concentration.

Study of Synthetic Fertilizer Chili and Organic Fertilizer Watermelon on Relay Cropping Fields

Chili is an agricultural commodity with prices that tend to fluctuate. Chilli-watermelon relay cropping is one way to overcome this problem and reduce losses when chili prices fall. Watermelon has a relatively short lifespan, so it can be a substitute when chili prices fall. Chili and watermelon are almost the same age. This research aims to assess how well the tandem cultivation of chili and watermelon in a relay cropping system is performed. The study employed a factorial randomized block design for experimentation. The research consisted of 2 experiments, namely chili and watermelon, cultivated on the same land. Experiment with 2 factors in chili, namely variety and type of NPK. The watermelon experiment involved 2 factors: variety and concentration of liquid organic fertilizer. All experiments were repeated four times. The data analysis proceeded by conducting Duncan's multiple range test at a significance level of 5%. Parameters for observing plant height, when flowers appear, fruit weight, number of chilies per plant, and watermelon fruit circumference. The results showed that chili and watermelon relay cropping could be harvested simultaneously without competition between plants. There was no interaction between chilies and watermelon. Chili has the highest weight in the Colombus variety with NPK Mahkota fertilizer. The watermelon with the highest weight was in the Baginda variety, with a liquid organic fertilizer concentration of 60 ml/liter. The relay cropping of chili and watermelon plants was effective simultaneously, and there was no decrease in yield.

Pengaruh Pemberian Pupuk Kandang dan Pupuk Organik Cair Terhadap Pertumbuhan dan Hasil Kentang (Solanum tuberosum L.) Kultivar Granola

Potato (Solanum tuberosum L.) is one of the staple foods in the world. Potato productivity must be increased to comply public consumption. This study aims to determine the interaction effect of doses of chicken manure and concentration of liquid organic fertilizer on the growth and yield of potato cultivar Granola. The research was conducted from February to June 2021, in Cikole Village, Margamulya Village, Bandung Regency, West Java Province with an altitude of 1,200 m above sea level and included in the C2 agro-climatological zone based on Oldeman's classification. The experiment used a factorial randomized block design (RBD). The first factor was the dose of manure, which consisted of 3 treatment levels, namely 0, 10 and 20 tons/ha. The second factor was the concentration of liquid organic fertilizer, which consisted of 3 treatment levels, namely: 0, 2, and 4 mL/L. Each treatment was replicated 3 times. The results showed that the interaction effect between doses of manure and liquid organic fertilizer occurred on plant height at 28 days after sowing and number of tubers per plant. The single effect of manure doses or liquid organic fertilizer concentration has made a difference in the growth and yield components. A dose of 10 tons/ha of manure or a concentration of 4 mL/L of liquid organic fertilizer could increase potato yields, compared to without manure or liquid organic fertilizer.