Organic Dosage Research Articles

Effect of Organic Fertilization Based on Cattle Dung in Village Cultivation of Sugar Cane (Saccharum officinarum L.) in Immature Phase in Northern Ivory Coast

This study aimed to determine the dose of organic fertilizer adapted to the agroecological conditions of the Ferkéssédougou zone during the immature or vegetative phase with a view to improving agricultural productivity in rainfed sugar cane cultivation. The trial was conducted using a Fisher block experimental design with three (3) repetitions and six (6) treatments including the control treatment. The observations mainly focused on growth parameters. Health monitoring was also carried out to detect the presence of diseases. Regarding growth parameters, no statically significant effect of fertilizers was observed between treatments. However, the fertilizers used had a positive impact in terms of gain compared to the control. Thus, three (3) groups of fertilizers stood out. Group 1 was composed of mineral manure at the normal dose (350 kg/ha of NPK), organic manure at the normal dose (20t/ha), double dose of compost (40 t/ha) and the organo-mineral mixture, namely the normal dose of compost (20t/ha) + half dose of mineral fertilizer (175 kg/ha of NPK). These treatments promoted good emergence, good elongation of the plants with large diameters and a large number of internodes. Group 2, composed only of half a dose of compost (10 t/ha), allowed us to have a large number of stems. For group 3, corresponding to the control treatment, no growth parameter was correlated. No symptoms of major illnesses were observed during the observations. The M1400/86 variety used is resistant to termite attack.

Study of nitrogen status in different planting systems and organic fertilizer doses in sandy soil

This study was conducted to determine the effect of different jajar legowo planting systems in intercropping sweet corn with peanuts, as well as the addition of several doses of organic fertilizer on soil nitrogen status and plant leaf tissue on sandy soil. The research was conducted from January to May 2023, on the south coast of Jember Regency. The study used a split-plot design; the main plot consisted of the treatment of 2:2 (A1) and 4:2 (A2) jajar legowo intercropping systems. The subplots were different doses of cow dung organic fertilizer: 10 t ha-1 (B1), 20 t ha-1 (B2), and 30 t ha-1 (B3), each repeated three times. Observational data were analyzed by ANOVA and DMRT 5%. The results of the study showed that the combination of the planting system and organic fertilizer doses applied had not been able to provide optimal microclimate and soil properties for the growth and development of sweet corn plants. The A2 planting system provides a better microclimate and plant morphology for plant N availability and absorption. The addition of organic fertilizer up to the highest dose (B3) has not been able to maintain optimal soil water and N availability for sweet corn in sandy soil.

Feasibility of organic fertilizer from poultry waste

All plant cultivation depends on good fertilization, be it chemical or organic. The general aim of this work is to assess the viability of organic fertilizer made from poultry waste. Its specific objectives are to characterize the chemical and physical properties of organic fertilizer from poultry waste, formulate doses of organic fertilizer from poultry waste, draft a technical scientific methodology for the use of organic fertilizer from poultry waste, propose a technical recommendation on the use of organic fertilizer from poultry waste and create a technical scientific protocol on the use of organic fertilizer from poultry waste. The data collected was submitted to Analysis of Variance (ANOVA) using the F test (P≤0.05), and regression analysis (P≤0.05) was carried out for the doses of organic fertilizer from poultry waste, with the choice of mathematical models based on the coefficient of determination (R2). The results show that the dose of 310 grams of organic material per square meter of soil (100% of the recommended dose) provides the best results.

APLIKASI PUPUK VERMIKOMPOS DAN POC URIN SAPI TERHADAP PERTUMBUHAN DAN HASIL TANAMAN TOMAT (Solanum lycopersicum)

This study aimed to determine the effect of vermicompost fertilizer dose and concentration of cow urine Liquid Organic Fertilizer (LOF) on the growth and yield of tomato plants (Solanum lycopersicum). This research was an experimental study conducted from March to May 2024. The experimental design used in this study was a factorial Randomised Group Design (RGD) consisting of two factors. The first factor was the dose of vermicompost fertilizer, which consisted of 4 levels, including 0 g/plant, 35 g/plant, 45 g/plant, and 55 g/plant. The second factor was the cow urine concentration LOF, which consisted of four levels: 0 ml/l, 30 ml/l, 60 ml/l, and 90 ml/l. The results showed that the treatment with a vermicompost fertilizer dose of 45 g/plant had the best effect on the parameters of plant height at 4 weeks (79.16 cm), 5 weeks (94.58 cm), and 6 weeks (117.08 cm), and stem diameter at 4 weeks (6.00 mm), 5 weeks (7.01 mm), and 6 weeks (7.94 mm). The concentration of cow urine LOF at 60 ml/l had the best effect on the parameters of plant height at 4 weeks (78.50 cm), 5 weeks (95.66 cm), and 6 weeks (116.25 cm), the number of fruits per plant (12.83 fruits), and fruit weight per plant (474.75 g). There was an interaction between the treatment of vermicompost fertilizer dose and concentration of cow urine, with a combination of 45 g/plant of vermicompost and 60 ml/l cow urine having the best effect on the parameter of plant height 6 weeks after planting (123.33 cm).

Assessment of Different Organic Manures on Morphological and Floral Attributes of Marigold (Tagetes erecta L.)

Aims: The organic content in manure helps soil retain moisture, increases gas exchange, and introduces beneficial bacteria, loosens clayey soil, promoting root growth. Soil with a higher organic content is more resistant to erosion and produces superior crops. Using organic manure decreases farming's environmental impact. Unlike synthetic fertilizers, it recycles waste materials, nourishes the soil, and nurtures crops. Methods: This experiment was carried out during Rabi 2023-24 at the Organic Research farm Kargunwan ji, Jhansi, Department of Horticulture, Institute of Agricultural Sciences, Bundelkhand University Jhansi (Uttar Pradesh). African Marigold (Tagetes erecta L.) cultivar ‘Hazara’ was sown under randomized block design (RBD) with 09 treatment viz., Control, FYM at 10t/ha, FYM at 20t/ha, Compost 10t/ha, Compost 20t/ha, Poultry manure10t/ha, Poultry manure20t/ha, Vermicompost 10t/ha and Vermicompost 20t/ha with 3 replication accommodating spacing (40 × 45) cm2, plot size (2.5 × 2.5) m = 5.0 m2 with total gross experimental area of (23.5 x 9.6) m = 225.06 m2. Results: Results shows that at harvest, increasing the organic doses at recommended doses clearly expressed maximum morphological characters and floral attributes and was reported under the treatment T9 (vermicompost 20t/ha) followed by treatment T8 (vermicompost 10t/ha) and T6 (poultry manure 10t/ha). The minimum plant height was noticed with the treatment T7 (Water spray). Conclusion: The results clearly revealed that on application of organic manure in marigold had a positive and significant impact on morphological characters and floral attributes in Marigold. Thus it is recommended to opt for organic cultivation in place of in organic cultivation.

PENGARUH PEMBERIAN PUPUK ORGANIK CAIR LIMBAH SAYUR DAN JARAK TANAM TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN KALE (Brassica oleracea Var. Palmifolia)

This research was conducted from July 2022 to September 2022 at UPT Balai Seed Horticulture, Bonto-bonto Hamlet, Parangloe Village, Bontomarannu District, Gowa Regency, South Sulawesi Province. This study used a factorial Randomized Block Design (RAK) with two factors, the first factor was the dose of liquid organic fertilizer for vegetable waste with 4 levels, namely: No treatment, 20 ml/l, 50 ml/l, 80 ml/l The second factor was distance planting with 2 levels, namely: Spacing 25 cm x 25 cm and 30 cm x 30 cm. There were 8 treatment combinations, each treatment was repeated 3 times to obtain 24 experimental units. The results showed that the liquid organic fertilizer of vegetable waste at a dose of 50 ml/l had a very significant effect on the average plant height, namely 22.36 cm, number of leaves 12.77 pieces, fresh weight per plot 1.70 kg, weight consumption per plot was 799 grams and production per hectare is 14.12 tons/ha. Giving a spacing of 30 cm x 30 cm has a very significant effect on fresh weight per plant, which is 719.33 grams on kale.

Uji efektivitas poc lidah buaya dan air cucian beras terhadap peningkatan produksi pakcoy (Brassica rapa L.)

Efforts to increase food security require innovation in reducing the level of use of chemical fertilizers by utilizing organic fertilizers. The aims of the research are: 1) is the application of liquid organic fertilizer from aloe vera able to increase the production of pakcoy plants, 2) is the application of liquid organic fertilizer from rice washing water effective in increasing the production of pakcoy plants, and 3) is there an interaction between the application of liquid organic fertilizer made from aloe vera? crocodiles with liquid organic fertilizer made from rice washing water on the growth rate of pak choy plants. The method used is an experimental method with a Completely Randomized Design (CRD) with two (2) factorial levels. The first factor uses liquid organic fertilizer from rice washing water with 2 doses, namely B0 (without treatment); B1 (with 12.5 ml dose of liquid organic fertilizer from rice washing water). The second factor uses aloe vera liquid organic fertilizer with doses: L0 (without treatment); L1 (5ml dose); L2 (10ml dose); L3 (15ml dose) and L4 (20ml dose). Each factorial is repeated 3 times. The results of the research found that the use of liquid organic fertilizer from aloe vera was able to increase pak choy production effectively with maximum treatment at a dose of 20 ml, apart from that the use of liquid organic fertilizer from rice washing water at a dose of 12.5 ml also has a real influence on increasing pakchoy production. However, in the interaction between the two liquid organic fertilizers, no significant interaction was found between the two types of organic liquid fertilizer during the research process.

Mycorrhizal symbiosis and natural dye waste organic fertilizer: Enhancing growth and yield in indigofera tinctoria

Background: Indigofera tinctoria, commonly known as true indigo, is a plant widely used in the textile industry for its natural indigo dye, which produces a rich blue color for fabrics. Indigofera tinctoria, known for its natural bluish-purple dye, generates 10% dye and 90% waste during extraction, requiring effective waste management. This study aimed to optimize organic fertilizer and mycorrhiza doses from I. tinctoria waste for enhancing soil fertility in arid regions. Methods: The study was conducted from May to December 2020 in Puron Village, Bulu District, Sukoharjo Regency. A factorial Completely Randomized Block Design (CRBD) with 2 factors was employed. The first factor consisted of 5 levels of I. tinctoria organic fertilizer treatments: 0, 100, 200, 300, and 400 g per plant. The second factor included 3 levels of mycorrhiza treatments: 0, 10, and 20 g per plant. Variables observed included mycorrhizal infection on roots, plant growth rate, and yield (fresh leaf and shoot weight of I. tinctoria). Data analysis utilized ANOVA at a 5% significance level followed by Duncan Multiple Range Test (DMRT). Results: The results indicated that organic fertilizer from natural dye waste at a dosage of 200 g per plant increased the percentage of mycorrhizal-infected roots and boosted shoot weight by 63.27% at 8 weeks after planting (WAP). Mycorrhiza at 10 g per plant increased mycorrhizal infection percentage and enhanced shoot weight by 45.98% at 4 WAP. The combination of I. tinctoria extraction waste organic fertilizer at 200 g per plant and mycorrhiza at 10 g per plantshowed interaction, significantly increasing the growth of root nodules of Indigofera tinctoria by 84.04% at 12 WAP. Conclusion: The integration of organic fertilizer derived from indigo dye waste and mycorrhiza presents a promising strategy for enhancing I. tinctoria growth and productivity. Novelty/Originality of this Study: This study is distinctive in its demonstration of the effective use of I. tinctoria extraction waste as an organic fertilizer, aligning with zero-waste principles and contributing to improvements in plant growth and soil fertility. Furthermore, it investigates the synergistic effects of mycorrhizal associations on enhancing nutrient absorption and overall productivity of I. tinctoria, an aspect that has not been thoroughly explored in prior research.

Pengaruh Dosis Phospor Dan Pupuk Cair Pada Tanaman Bunga Kol (Brassica Oleracea Var. Botrytis L)

Cauliflower is a vegetable that has commercial value and excellent prospects for public consumption. According to the Central Statistics Agency of the Republic of Indonesia, cauliflower production has decreased from 2019 to 2021, therefore it is necessary to improve maintenance, one of which is by providing Phosphorus fertilizer to increase productivity. This will increase the rate of photosynthesis to produce high productivity and the correct dose of liquid organic fertilizer (POC) to maximize growth in the vegetative and generative phases thereby increasing the yield of cauliflower plants. This research aims to determine the effect of giving various doses of Phosphorus and POC fertilizers on the growth and yield of cauliflower plants. The research was carried out in the village, Girilayu, Matesih, Karanganyar from February to May 2024. Using the Complete Randomized Block Design (RAKL) method consisting of 2 treatment factors and 3 replications. The first factor is the dosage of Phosphorus (P) fertilizer P1: 100 kg/ha, P2: 150 kg/ha, P3: 200 kg/ha. The second factor is the dose of POC (C), C1: 4 cc/L, C2: 8 cc/L, C3: 12 cc/L. The results research showed (1) Giving various doses of Phospor fertilizer had a very real effect on fresh stover, dry stover, plant diameter, plant weight per plant, and crop weight per plot. However, it does not have a real effect on plant height and number of leaves. (2) Giving various doses of POC had a very real influence on fresh stover, dry stover, plant diameter, and plant weight per plant had a real influence on crop weight per plot and had no real influence on plant height and number of leaves. (3) The interaction between treatments had a very real influence on fresh stover, dry stover, and plant weight per plant, and had no real influence on plant height, number of leaves, plant diameter, and weight per plant plot. (4) The highest results were obtained in the branch pruning treatment 3 weeks after planting with an NPK fertilizer dose of 200 kg/ha, namely a plant weight of 11,997.4 grams per plot (26,644 kg/ha).

PENGARUH PEMBERIAN ARANG SEKAM DAN PUPUK ORGANIK CAIR DARI LIMBAH BUAH DAN SAYUR TERHADAP PERTUMBUHANBIBIT GAHARU (Aquilaria malaccensis)

This study aims to determine the effect of applying husk charcoal and liquid organic fertilizer from fruit and vegetable waste in increasing the growth of agarwood seedlings (Aqualaria malaccensis). This research was carried out in the Nursery of the Department of Forestry, Faculty of Agriculture, Pattimura University for three months. The method used in this study is a Complete Random Design (RAL) with 2 factors and 3 replicates. The first factor is the dose of liquid organic fertilizer from fruit and vegetable waste consisting of 4 levels, namely A0 (No liquid organic fertilizer), A1 (100 ml), A2 = (200 ml), A3 = (300 ml) The second factor is the application of husk charcoal consisting of 2 levels, namely B1 (No husk charcoal), B2 (Husk charcoal). The results showed that A1B2 treatment (100 ml POC + husk charcoal medium) gave the highest results on plant height, A2B1 (200 ml POC + no husk charcoal media) gave the highest results on plant diameter, while the highest number of leaves was A0B1 (control + no husk charcoal).

Effects of LongTerm Application of Mineral Fertilizers and Manure on Agrochemical Properties of Gray Forest Soil, Crops Productivity and Carbon Sequestration

The effect of long-term application of increasing doses of mineral (from N90P75K100 to N360P300K400) and organic (cattle manure from 25 to 100 t/ha) fertilizers on the fertility of gray forest soil was studied in the micro-plot experiment. Over 9 years, 0.81–3.24 t/ha of nitrogen, 0.68–2.70 t/ha of P2O5 and 0.90–3.60 t/ha of K2O were applied with mineral fertilizers. Manure supplied 43–173 t/ha of dry matter, 16–65 t/ha of Corg, 0.85–3.41 t/ha of Ntot, 0.65–2.59 t/ha of P2O5 and 0.86–3.46 t/ha of K2O. In the yield the mineral fertilizer system exceeded the organic one by an average of 29%. At extreme doses (N360P300K400 and 100 t/ha of cattle manure) mineral fertilizers reduced crop productivity more strongly than organic fertilizers. A direct linear relationship was found between the doses of mineral and organic fertilizers and the increase in the content of available P2O5 and K2O in the soil. Application of extreme doses of fertilizers did not lead to saturation of the soil with available forms of phosphorus and potassium. Long-term application of organic fertilizers increased the soil pH(KCl) by 0.4–1.3 units and mineral fertilizers decreased it by 0.8–1.4 units. Annual application of mineral fertilizers increased soil Corg content by an average of 0.02–0.04% per year, and organic fertilizers – by 0.08–0.17% per year. Manure application at 100 t/ha over 9 years led to the saturation of the soil with organic carbon. The C : N ratio in the soil under a mineral fertilizer system was decreased, while it with the organic system was increased. An approach to calculate the carbon sequestration efficiency for the assessment of different agronomic practices is proposed. It is shown that the carbon sequestration efficiency of the organic fertilizers was 15% higher than that of the mineral fertilizers.

Application of Coffee Grounds Organic Fertilizer on The Growth and Production of Cucumber Plants (Cucumis sativus L)

Cucumis sativus L, commonly known as cucumber, is a creeping vine plant and a member of the Cucurbitaceae family known for producing fruit-bearing vegetables. Cucumis sativus plants originate in the Asian continent, specifically in North and South Asia. The primary objective of this study is to investigate the development and yield of cucumber plants, focusing particularly on the impact of varying doses of organic fertilizer derived from liquid coffee grounds. Specifically, the study seeks to assess the effects of these treatments on plant height, time to flowering, time to harvest, and the weight of the fruit produced by cucumber plants. This study was conducted within the idyllic housing complex from March to May 2024. The research used a factorial randomized block design (RAK) with a single factor. The dosage parameters for coffee grounds fertilizer are as follows: P0 serves as the control group, P1 involves a dosage of 25 ml per plant, P2 utilizes a dosage of 50 ml per plant, and P3 applies a dosage of 75 ml per plant. The findings indicated that the various fertilizer treatments had a noteworthy impact on plant height, flowering age, harvest time, and fruit weight, suggesting a significant interaction between the two variables. Applying 75 ml of coffee grounds fertilizer per cucumber plant yields the best outcomes in promoting increased plant height, earlier flowering, shortened harvest time, and greater fruit weight in cucumber plants.

RESPON CABAI (Capsicum annum L.) TERHADAP PENGGUNAAN PUPUK ORGANIK CAIR DAN PUPUK HAYATI MIKORIZA

Red chili (Capsicum annuum L.) is one of the commodities vegetables that have high economic value. One attempt to increase the growth and yield of chili plants by using liquid organic fertilizer and mycorrhizal biological fertilizer. This research aims to determine the best dosage of liquid organic fertilizer and mycorrhizal biological fertilizer on the yield of red chili (Capsium annum L.). The research was carried out on land of Agriculture of Palembang City, South Sumatra Province. The research period was carried out from February to June 2023. The research used a Randomized Group Factorial Design (RAKF) with 9 treatments and 3 replications. The first factor is liquid organic fertilizer from vegetable waste according to the treatment, namely O1 = 5 ml/L, O2 = 10 ml/L and O3= 15 ml/L. The second factor is the provision of Mycorrhizal biofertilizer (M) which consists of 4 treatment dose levels, namely M0 = 0 g/ta (without mycorrhiza), M1 = 2.5 g/ta, M2 = 5 g/ta, M3 = 7.5 g /ta. The observation parameters in this study were chili weight per plant (g), chili weight per plot (g) and number of productive brances (brances). The results of the research showed that treatment with a POC dose of vegetable waste of 5 ml/l of water with mycorrhizal biological fertilizer of 2.5 g/lot had the highest influence on chili plant production of 48.33 g/plot or the equivalent of 193,32 kuintal/ha.

Prediction of hydroxyl radical exposure during ozonation using different machine learning methods with ozone decay kinetic parameters

The abatement of micropollutants by ozonation can be accurately calculated by measuring the exposures of molecular ozone (O3) and hydroxyl radical (•OH) (i.e., ∫[O3]dt and ∫[•OH]dt). In the actual ozonation process, ∫[O3]dt values can be calculated by monitoring the O3 decay during the process. However, calculating ∫[•OH]dt is challenging in the field, which necessitates developing models to predict ∫[•OH]dt from measurable parameters. This study demonstrates the development of machine learning models to predict ∫[•OH]dt (the output variable) from five basic input variables (pH, dissolved organic carbon concentration, alkalinity, temperature, and O3 dose) and two optional ones (∫[O3]dt and instantaneous ozone demand, IOD). To develop the models, four different machine learning methods (random forest, support vector regression, artificial neural network, and Gaussian process regression) were employed using the input and output variables measured (or determined) in 130 different natural water samples. The results indicated that incorporating ∫[O3]dt as an input variable significantly improved the accuracy of prediction models, increasing overall R2 by 0.01−0.09, depending on the machine learning method. This suggests that ∫[O3]dt plays a crucial role as a key variable reflecting the •OH-yielding characteristics of dissolved organic matter. Conversely, IOD had a minimal impact on the accuracy of the prediction models. Generally, machine-learning-based prediction models outperformed those based on the response surface methodology developed as a control. Notably, models utilizing the Gaussian process regression algorithm demonstrated the highest coefficients of determination (overall R2 = 0.91−0.95) among the prediction models.

Growth of Rubber Seeds (Hevea brasiliensis Muell.Arg) from Sleeping Eye Stum by Applying Organic Fertilizer Bulk and Liquid Herbal Waste

The organic fertilizer derived from herbal medicine waste in both bulk and liquid form is rich in macro and micro nutrients as well as decomposing microbes and probiotic bacteria needed to improve soil chemical properties. These fertilisers can be used to obtain better growth of rubber seedlings, especially rubber seedlings of sleeping eye origin. The objectives of this study was(1) to determine the effect of organic fertilizer and liquid bulk herbs Against Waste growth and (2) to know nutrient uptake of N, P, and K seedling stum Sleep eye. The study was conducted in a 4 x 3 factorial experiment arranged in a completely randomized design (CRD) with five replications. The first factor is the concentration of organic liquid fertilizer consisting of four in the standard: h0 = 0 ml L-1 of air (0%); h1 = 2 ml L-1 air (0.2%); h2 = 4ml L-1 air (0.4%); h3 = 6ml L-1 air (0.6%). The second factor is the dose of organic fertilizer consists of three levels: (b0 = 0 mg ha-1: b1 = 5 mg ha-1: b2 = 10 Mg ha-1). Data were analyzed with Analysis of Variant and continued with Duncan's Multiple Range Test 5% level. The results showed that the dosage of bulk organic fertilizers was significantly different at the level of 5% of the uptake of nitrogen, other observations were not significantly different. While the treatment of liquid organic fertilizer was highly significantly different at the level of 1% of nitrogen absorption, other observations were not significantly different. No real effect on their interaction in all observations. The treatment dose of organic fertilizer 5 Mg ha-1 and the treatment of liquid organic fertilizer 4 ml L-1 provided the highest results in leaf area of 586.46 cm2 per plant compared to the control treatment of 181.06 cm2 per plant. The treatment of bulk organic fertilizer dose and liquid organic fertilizer concentration predicted P2O5 nutrient uptake per rubber plant did not show significant differences. While the treatment of doses of bulk organic fertilizer and concentrations of liquid organic fertilizer is thought to be potassium nutrient uptake per rubber plant does not show significant differences, but can be seen from the growth of diameter, number of leaves, and leaf area.

Growth Performance of Neem (Azadirachta indica) Seedlings as Influenced by Organic and Inorganic Fertilizers

A pot experiment was carried out in the net house of the Department of Soil, Water and Environment, University of Dhaka. The aim of the study was to assess growth and yield performance of Neem seedlings with the different doses of organic and NPK fertilizers. Trichocompost (TC) was used as organic fertilizer. The treatments used in the experiment were: T1: Control (-OM and -NPK), T2: TC (10 ton/ha), T3: TC 5 ton/ha, T4: NPK 100% RDF, T5: NPK 80% RDF + TC 5 ton/h, T6: NPK 60% RDF + TC 5 ton/h, T7: NPK 40% RDF + TC 5 ton/h, T8: NPK 80% RDF + TC 10 ton/h, T9: NPK 60% RDF + TC 10 ton/h, T10: NPK 40% RDF + TC 10 ton/h. Pots were arranged in a Completely Randomized Design (CRD). Plant height and the number of leaves per plant were recorded at a 15-day interval. The tallest plant (78.87 cm) observed with the application of sole Trichocompost 5 ton/ha. Incremental dose of TC and inorganic fertilizer reduces the height of plant. The maximum no. of leaves ( 51.67) was found with NPK 60% RDF + TC 5 ton/h at the stage of 90 days and the next highest amount of leaves (44.67) with NPK 80% RDF + TC 10 ton/h at 90 days after. The lowest height (12.52 cm) and leaf number/plant (8.33) were recorded in control. Maximum fresh and dry weights (root, bark, and leaf) were 17.19 g/plant and 6.24 g/plant, respectively, found in T8: (NPK 80% RDF + TC 10 ton/h). The best growth performance of seedlings was observed in T8: NPK, 80% RDF, and TC 10 ton/h .The research indicated that there was no significant treatment difference on nutrient uptake by the neem seedlings. Biodivers. Conserv. Bioresour. Manag. 2024, 10(1): 81-90

Efektivitas Pupuk Organik Cair Jerami Padi dan Kotoran Sapi terhadap Pertumbuhan Tanaman Sawi (Brasicca juncea L.)

The mustard plant (Brassica juncea L.) is loved by everyone because it has lots of nutrients and is also good for health. This research aims to determine the effectiveness of liquid organic fertilizer from rice straw and cow dung on the growth of mustard greens. The method used in this research was an experimental method with a Completely Randomized Design (CRD) with 2 factors, namely the dose of liquid organic fertilizer (P₁ = 10 ml and P₂ = 13 ml) and the time of application of liquid organic fertilizer (W₁ = once every 5 days and W₂ = once every 7 days). The results of research on liquid organic fertilizer from rice straw and cow dung can effectively accelerate growth in height, number of leaves and wet weight in mustard greens (Brassica juncea L.). The growth of mustard greens was very good in the P₂W₁ treatment (13 ml dose every 5 days) which produced mustard plants with an average height of 35.1 cm, an average number of leaves of 17.3, and an average fresh weight of mustard greens. average 165.3 grams.

Efektivitas Pupuk Organik Cair Limbah Jerami Padi dan Batang Pisang Terhadap Pertumbuhan dan Kandungan Fosfor Tanaman Sawi Hijau (Brassica juncea L.)

The research aims to determine the effectiveness of the growth and phosphorus (P) content of green mustard plants (Brassica juncea L.) after administering POC from rice straw waste and banana stems at different time intervals and doses. The research method used was an experiment with a Completely Randomized Design (CRD) type of two factors, including the dose of liquid organic fertilizer (D1 = 10 ml and D2 = 13 ml) and the time interval for fertilizer application (I1 = once 5 days and I2 = once 7 days) and 3 repetitions. The results were analyzed using a two-way ANOVA with a significance level of 0.05. The results showed that the treatment given had a significant effect on the growth of plant height, wet weight, root length, and phosphorus content but had no significant effect on the growth of the number of leaves. I1D1 treatment (5 day interval, dose of 10 ml) is the best treatment for plant growth and phosphorus content of green mustard greens (Brassica junea L.). Keywords: Mustard Greens, Rice Straw, Banana Stems, Liquid Organic Fertilizer, Growth, Phosphorus

Efektivitas Pupuk Organik Cair Jerami Padi dan Ampas Teh Terhadap Pertumbuhan dan Kandungan Kalsium Tanaman Selada (Lactuca sativa L.)

This research aims to determine differences in growth and calcium levels of lettuce plants ( Lactuca sativa L.) after applying liquid organic fertilizer from rice straw and tea dregs. This research used an experimental method with a Completely Randomized Design (CRD) with 3 replications and two factors, namely the dose of liquid organic fertilizer (P1 = 10 ml and P2 = 13 ml) and the time of application of liquid organic fertilizer (W1 = once every 5 days and W2 = every 7 days). The results of the research showed that all treatments had different effects on the growth and levels of lettuce plants. The treatment that has the most influence on the growth and calcium levels of lettuce plants is P2W2 (13 ml fertilizer dose and application time every 7 days). Keywords: Tea dregs, rice straw, calcium, lettuce plants, liquid organic fertilizer

A Study of Effects of Different Organic Origin Liquid Seaweed Doses on Germination Radicle and Plumule Growth in Winter Cereal Species

In this study, it was aimed to determine the effects of liquid seaweed on seed germination and radicle and plumule growth in some winter cereal species (Triticale (T), Barley (B) and Wheat (W)) were investigated. In the study, 6 different doses (Control (D0), 1000 ppm L-1 (D1), 2000 ppm L-1 (D2), 4000 ppm L-1 (D3), 8000 ppm L-1 (D4) and 16000 ppm L-1 (D5)) of seaweed were used. Germination index (number day-1), radicle and plumule fresh weight (g), radicle and plumule dry weight (g) and germinated seed number (number) were measured during the 14-day development period of cereal species at all seaweed doses. According to the study findings, apart from "number of germinated seeds in cereal species" and "germination index in species x dose interaction"; significant differences were found between the average values of all the properties examined in the grain types, fertilizer doses and species x dose interactions. Wheat among cereals had the highest values with regard to radicle dry weight and radicle fresh weight. D2 dose from the doses of seaweed fertilizer form has the highest values in germinated seed number, radicle dry weight, plumule dry weight, and radicle fresh weight, while D5 dose was the lowest. In terms of species x dose interaction, radicle fresh weight was found to be high in T x D1 interaction. Germinated seed number and plumule fresh weight were found to be high in H x D0 interaction. Germinated seed number and radicle dry weight were found to be high in W x D2 interaction. As a result, in the germination study with liquid seaweed, D2 dose for wheat, D1 and D2 doses for triticale, D0, D1 and D2 doses for barley were found as encouraging.