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INDONESIA
Jurnal Ilmu Pertanian
Published by Universitas Gadjah Mada
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 547 Documents
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Impact of Water Hyacinth Compost and Compound Fertilizers on Soil Chemistry, Nutrient Uptake, and Shallot Yield Salsabilla, Annisya; Sofyan, Emma Trinurani; Yuniarti, Anni
Jurnal Ilmu Pertanian Vol 10, No 3 (2025): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.101156

Abstract

Water hyacinth (Eichhornia crassipes) compost provides a sustainable opportunity to improve soil fertility while managing an invasive aquatic weed. This study evaluated the optimal combination of water hyacinth compost and NPKS fertilizers for enhancing soil chemical properties, nutrient uptake, and shallot (Allium ascalonicum L.) yield on Inceptisols. The experiment was conducted from July to October 2023 using a Randomized Complete Block Design with seven fertilization treatments, including a control treatment without compost or NPKS, a compost-only treatment, a full NPKS treatment, and four combined treatments consisting of compost at ¼, ½, ¾, and 1 dosage levels each paired with ¾ of the recommended N, P, K, and S fertilizers. Results showed substantial improvements in soil chemistry, particularly in treatments combining compost with reduced mineral fertilizer rates. Soil pH increased toward neutral conditions, total nitrogen rose from 0.10% in the control to 0.32%, and available phosphorus and potassium increased more than fourfold compared with unfertilized soil. The treatment of ¾ compost dose (18.75 t ha⁻¹) + ¾ recommended NPKS consistently produced the highest soil nutrient availability, reflecting enhanced mineralization and nutrient retention. Nutrient uptake by shallot plants also improved markedly, with nitrogen, phosphorus, and potassium absorption increasing two- to threefold relative to the control. These improvements corresponded with clear gains in crop performance: the number of bulbs increased from 5 in the control to 9, and fresh bulb weight rose from 92.89 g to 132.26 g. Integrated treatments outperformed both compost-alone and full mineral fertilization. These findings indicate that combining water hyacinth compost with reduced NPKS fertilization can maintain high shallot productivity while decreasing reliance on chemical fertilizers, enhancing soil fertility, and providing an environmentally beneficial use for invasive aquatic biomass—supporting sustainable and circular nutrient management in low-fertility tropical soils
Impact of Paraquat Herbicide Application on Soil Microbial (Bacterial and Fungal) Populations and Some Physico-Chemical Properties of Soils under Plantain (Musa paradisiaca) Plantation Ogbemudia, Ikponmwosa; Ifeyinwa, Edosa Valerie; Abraham, Oogboghodo Ikponmwosa; Ejiro, Abamba Esther
Jurnal Ilmu Pertanian Vol 10, No 3 (2025): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.105910

Abstract

Paraquat, a widely used non-selective herbicide, is commonly applied in plantain (Musa paradisiaca) plantations to suppress weeds. However, its repeated application raises concern about adverse effects on soil microbial communities and key soil properties that determine fertility and sustainability. This study evaluated the impact of paraquat application on soil microbial (bacterial and fungal) populations and some selected physical and chemical properties of soil under a plantain plantation to understand its influence on soil health. Soils were collected from a plantain plantation in Benin City, Nigeria and treated with paraquat at control (0), recommended rate (RR), and twice the recommended rate (2RR). The experiment was laid out in a Completely Randomized Design (CRD) with three replicates per treatment. Microbial populations and soil properties were monitored at 0, 7, and 14 days after application using standard microbiological and physico-chemical analyses. The RR paraquat application stimulated bacterial and fungal populations over time, suggesting microbial tolerance at moderate concentrations. In contrast, the 2RR application suppressed microbial populations, reduced total nitrogen and organic carbon, and altered nutrient dynamics. Available phosphorus and exchangeable cations (K, Ca, Mg, Na) increased with paraquat rate, while exchangeable acidity (H⁺, Al³⁺) decreased. Soil pH and texture influenced paraquat’s bioavailability and effects, with the sandy, moderately acidic soil enhancing its mobility and toxicity at higher doses. Moderate paraquat use can enhance microbial activity and maintain soil fertility, but excessive application disrupts microbial communities and nutrient balance. These findings reveal the need for judicious paraquat application to safeguard soil health and support sustainable weed management.
Cow Manure for Improving Carbon-to-Nitrogen Ratio of Tailings, Growth, and Biomass of Water Kale (Ipomoea reptans Poir.) Hindersah, Reginawanti; Ardelia, Zahra; Sofyan, Emma Trinurani; Setiawan, Ade; Damayanti, Farida
Jurnal Ilmu Pertanian Vol 10, No 3 (2025): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.106456

Abstract

Gold mine tailings are characterized by low organic matter, poor nutrient availability, extreme pH conditions, and unfavorable texture, all of which restrict plant growth. This study evaluated the effects of cow manure (CM) on soil chemical properties, carbon-to-nitrogen (C/N) ratio, and the growth and biomass of water kale (Ipomoea reptans Poir.) cultivated in tailings-based media. A greenhouse experiment was arranged in a randomized block design consisting of five treatments: 0% (control), 15%, 30%, 45%, and 60% CM (v/v), each replicated six times. Observations included soil pH, organic carbon, total nitrogen, C/N ratio, plant growth parameters, biomass, and microbial populations at 35 days after planting. The application of CM significantly increased organic C, total N, and the C/N ratio, with the highest values observed at 60% CM. However, higher CM doses reduced substrate pH to slightly acidic levels. The 15% CM treatment produced the greatest improvements in plant growth and biomass, increasing plant height by 21%, stem thickness by 29%, leaf number by 8%, and fresh and dry biomass by 73% and 120%, respectively, compared with the control. Increasing CM above 15% enhanced the C/N ratio but did not further improve plant performance, likely due to reduced nitrogen availability associated with higher organic matter and slower mineralization. CM applications did not significantly affect bacterial or fungal populations in the rhizosphere. Overall, the findings indicate that low-dose CM (15%) is optimal for improving the C/N ratio, supporting nutrient availability, and enhancing water kale growth in tailings. This study demonstrates the potential of organic amendments for rehabilitating gold mine tailings and highlights their role in restoring soil functionality and supporting sustainable revegetation efforts.
Nitrogen, Phosphorus and Sulfur Stocks in Soils under Different Land Use Systems at the University of Benin Nigeria. Emomu, Adams; Aigbobo, Eseuwa Naomi; Olukini, Bisola Elizabeth
Jurnal Ilmu Pertanian Vol 10, No 3 (2025): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.109084

Abstract

Understanding how land use and soil depth influence nutrient storage is essential for sustainable soil management in tropical ecosystems. This study quantified nitrogen (N), phosphorus (P), and sulfur (S) stocks in soils under four contrasting land-use systems—arable, forested, sport, and plantain fields—within the University of Benin, Nigeria. Soil samples were collected at 0–30 cm and 30–60 cm depths and analyzed using standard laboratory methods. Nutrient stocks were calculated based on soil nutrient concentration, bulk density, and depth increments. Land use and soil depth significantly affected N and P stocks, while S stock variation at the surface layer was not significant. At 0–30 cm, the highest N stock (2,360 Mg ha⁻¹) occurred in arable land, likely due to continuous inorganic N fertilizer use, whereas plantain fields stored the highest P (2,354 Mg ha⁻¹) and S (164 Mg ha⁻¹), reflecting greater organic inputs and improved soil chemical properties. At 30–60 cm, N stock peaked in sport land (3,890 Mg ha⁻¹), possibly due to turfgrass management and regular biomass return, whereas forested land stored the most sulfur (433 Mg ha⁻¹), attributed to litter accumulation and microbial activity. Differences in nutrient stocks across land uses corresponded closely to variations in soil organic carbon, pH, and cation exchange capacity. These findings highlight strong land use–driven redistribution of essential nutrients in tropical Ultisols. Promoting land-use practices that enhance organic matter input—such as agroforestry, mixed cropping, or managed fallows—can improve nutrient storage, support long-term soil fertility, and strengthen nutrient cycling in degraded tropical landscapes.
Changes in Soil Chemical Properties of Gold Mine Tailings Land by Applying Oil Palm Empty Bunch Biochar and Rubber Litter Compost Firnia, Dewi; Rohmayati, Imas; Hasyim, Abduh; Harfiah, Nida
Jurnal Ilmu Pertanian Vol 10, No 3 (2025): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.109323

Abstract

Pollution (Hg) of the soil due to gold mining activities reduces soil fertility and endangers the environment. The purpose of this study was to analyze effectiveness of biochar from palm empty bunches (PEB) and compost from rubber leaf litter as remedial materials to improve the soil chemical properties of Hg-contaminated tailings. An experimental method using a factorial Randomized Group Design was applied with varying doses of biochar and compost. Parameters observed included Hg concentration, pH, Organic C, Total N, and P and K availability. The results showed that the gold mine tailings have chemical properties that are not ideal for supporting plant growth, including a slightly alkaline pH, very low Organic C and total nitrogen contents, and mercury levels that exceed safe limits (The critical concentration of mercury (Hg) in soil is 0.3-0.5 ppm). The use of biochar from oil palm empty fruit bunches and rubber leaf litter compost proved to be able to increase pH, Organic C, total nitrogen, phosphorus, and available potassium. The treatment with the highest dose combination (30 tons PEB biochar and 20 tons rubber litter compost per ha) succeeded in increasing total N to 5.40%, available P by 175.67 mg/1kg, available K by 7.39 mg/100g, and Organic C by 0.98%. However, the amount of mercury remained high, so further remediation using larger doses of ameliorants and stricter tailings management is needed to sustainably reduce heavy metal pollution.
Enhancing Growth and Yield of Foxtail Millet Using Pearl Oyster Biofouling Fertilizer Nendissa, Jeanne Ivonne; Riry, Johan; Patty, Jogeneis; Amba, Martha; Wahditiya, Andi Adriani; Lating, Raudatul Janna
Jurnal Ilmu Pertanian Vol 10, No 3 (2025): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.109488

Abstract

Hotong (Setaria italica L.), or foxtail millet, is an emerging alternative cereal crop with high adaptability to marginal environments and considerable nutritional value. This study aimed to evaluate the effects of liquid organic fertilizer (LOF) derived from pearl oyster (Pinctada maxima L.) biofouling waste on the growth and yield of hotong cultivated under tropical conditions in Mamala Village, Maluku. A factorial randomized block design was implemented using four fertilizer concentrations (0, 10, 20, and 30 mL·L⁻¹) and two application timings (25 and 50 days after planting, DAP). Results revealed that LOF application significantly enhanced both vegetative and reproductive traits. The concentration of 30 mL·L⁻¹ applied at 25 DAP produced the largest leaf area (64.17 cm²) and highest total biomass (306.91 g), indicating improved nutrient uptake and photosynthetic capacity during early growth. Yield components—including plant height, panicle number, and grain weight—increased by 40–60% relative to the control treatment. These findings demonstrate that organic fertilizer made from aquaculture biofouling waste functions as an effective nutrient source for cereal crops while contributing to environmentally responsible waste management. The integration of aquaculture residues into agricultural fertilizer production aligns with circular economy principles by promoting nutrient recycling, reducing reliance on synthetic fertilizers, and mitigating marine pollution associated with biofouling disposal. The implications of this research highlight the potential for scalable, low-cost, and eco-friendly fertilization strategies that enhance food security in marginal farming areas, strengthen coastal community resilience, and support sustainable linkages between aquaculture and terrestrial crop production systems.
Enhancing Vigor of Cucumber (Cucumis sativus L.) Seeds Through Osmo-priming Pradana, Adhitya Vishnu; Anugrah, Mertya; A'yunin, Qurrotu; Prayogi, Adi Noor; Togatorop, Eny Rolenti
Jurnal Ilmu Pertanian Vol 10, No 3 (2025): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.111401

Abstract

Cucumber production relies heavily on high-quality seeds, yet prolonged storage often leads to a significant decline in seed vigor and viability, characterized by reduced germination and non-uniform growth. To address this challenge, invigoration techniques through seed priming offer a promising solution to revitalize aged seeds, which also aligns with global sustainability efforts in preserving genetic resources and ensuring food security. This study aimed to evaluate the effectiveness of various invigoration treatments in enhancing the viability and vigor of expired cucumber seeds from different storage periods. The research utilized a factorial split-plot design with two factors, consisting of invigoration treatments (Control, KH₂PO₄, PEG, and Distilled Water) and storage periods (9 years, 7 years, and 5 years). The variables observed included radicle emergence (RE) at 24 and 48 hours, germination capacity, percentage of abnormal seedlings, and vigor index. The results showed that all invigoration treatments significantly improved seed performance compared to the control. The KH₂PO₄ treatment was the most effective for rapid improvement within 24 hours, showing a strong correlation (R=0.99) with increased vigor and a reduction in abnormal seedlings (R=0.85). However, distilled water showed the best performance for 48-hour RE, particularly when applied to 5-year stored seeds, reaching an 88% germination rate and the highest vigor index of 80%. In conclusion, invigoration is a viable method to restore the quality of aged seeds, with KH₂PO₄ and distilled water being recommended for optimizing the performance of specific seed lots. Future studies could further explore the field establishment of these invigorated seeds under diverse environmental stress conditions.

Page 55 of 55 | Total Record : 547

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