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Journal : Akta Agrosia

 1 
Performance of Lettuce (Lactuca sativa) Grown under Ultisol Subsoil with Chicken Manure and Dolomite Viani, Reza Junita Okta; Handajaningsih, Merakati; Suprijono, Eko; Marwanto
Akta Agrosia Vol 27 No 1 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.27.1.1-6

Abstract

Lettuce is a horticultural plant with a short harvest time that is a popular vegetable choice for planting in polybags in urban areas. Planting media for cultivating plants in  polybags vary widely. The use of nutrient-poor and acidic subsoil in Ultisols as a planting medium requires additional organic matter and lime that are suitable for the plants. This study evaluated the use of subsoil as a medium for growing lettuce by adding เว็บสล็อต | R4shub chicken manure and dolomite. The Completely Randomized Design was used, which consisted of two factors and 6 replications. The first factor was the dose of chicken manure consisting of: 0 ton/ Ha, 10 tons/Ha (38g /polybag), 20 tons/ Ha (76g/ polybag), and 30 tons/ Ha (115g /polybag). The second factor was the dolomite dose, consisting of no dolomite, 1xAl-exch, and 2xAl-exch. A dose of 20 tons /Ha of chicken manure combined with   1xAl-dd of dolomite increased the growth of plants. The treatment of chicken manure at 20 tons/Ha showed growth and yield of lettuce that were as good as a treatment dose of 30 tons/ Ha. The highest fresh weight (123.05g) was obtained from 30 tons/Ha-chicken manure treatment. The appropriate dose of dolomite for lettuce growth and yield was 1xAl-exch, which resulted in a plant fresh weight of 121.12 g. Subsoil is suitable to be used as a medium for planting lettuce in polybags by adding chicken manure or dolomite.  Keywords: organic matter, marginal soil, leafy vegetable, container veg production
Application of Dolomite and P Fertilizers Doses on The Growth and Yield of Edamame Soybean (Glycine max (L.) Merrill in Swampland Anggraini, Septiana; Handayaningsih, Merakati; Haryanti, Yenda; Masdar; Marwanto; Setyowati, Nanik
Akta Agrosia Vol 26 No 1 (2023)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.26.1.14-22

Abstract

Pakchoy is a leafy vegetable that is great demand by Indonesians. The increase in population has had a major impact on agricultural land, which has encouraged an urban farming system, using polybags for crop production. The use of soil media in polybags often experiences compaction and lack of nutrients, so it is necessary to modify the composition of the planting media and put additional fertilization. This research was conducted to evaluate the response of pakchoy to local microorganisms based on rice waste and to determine the best composition of growing medium for pakchoy plants. This study used a completely randomized design (CRD) with 2 factors. The first factor was the local microorganism (LMO) doses of rice waste consisted of 4 levels, namely 0 ml, 500 ml, 1000 ml, and 1500 ml per plant. The second factor was the composition of the planting medium (Soil : Sand: Cow Manure) at 4 levels, namely Soil 100%, 1:1:1, 1:1:2, 1:1:3. Data were statistically analyzed with ANOVA at 5% level. Mean separation was tested further with Duncan Multiple Range Test. The results showed that the LMO 0 ml and 500 ml performed higher effects on plant height, number of leaves, plant fresh and dry weight, root fresh and dry weight, and root length compared to the application LMO at 1000 ml and 1500 ml. The highest plant fresh weight was 193.1 g at 0 ml LMO, followed by 160.35 g at 500 ml LMO.   The composition of the planting medium 1:1:1 and 1:1:2 resulted in a higher number of leaves, plant dry weight, and root weight than other treatments. Incorporating a high portion of manure into the pakchoy planting medium was not beneficial. All growth variables and yield were higher compared to the control medium (soil 100%).  Key Words: pakchoy, local microorganism,  planting media
Equal Substitution of Synthetic Nitrogen Fertilizer with Azolla Compost on Growth, Yield, and Nitrate Content of Green Onion in Ultisols Chiristiana; Marwanto; Marlin; Handajaningsih, Merakati; Anggraini, Septiana
Akta Agrosia Vol 26 No 2 (2023)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.26.2.87-97

Abstract

The impact of Azolla compost (AC) substitution for synthetic N fertilizer (NF) on nitrate leaf content and agronomic performances of green onion in Ultisols have not been well understood. Therefore, this study aimed to assess the effects of equal replacing NF with AC on growth, yield, and nitrate accumulation in the green onion leaf. The polybag trial was performed in June 2020 on the crop research farm of the Agriculture Faculty in a completely randomized design with six treatments in five replications. Green onion was subjected to five 92 kg ha−1 N equal combinations of NF and AC, i.e., NF100 (100% NF+0% AC), NF75 +AC25 (75% NF+25% AC), NF50 +AC50 (50% NF+50% AC), NF25 +AC75 (25% NF+75% AC), and NF0 +AC100 (0% NF+100 % AC) and no NF and AC as a control. Results demonstrated that NF+AC treatments significantly improved plant height, leaf number, tiller number, stem diameter, and plant fresh weight. Treatment of NF25+AC75 resulted in similar responses to the recommended dose of N fertilizer, as evidenced by plant height, number of green leaves, root fresh weight, shoot dry weight, tiller numbers per hill, stem diameter, shoot fresh weight, and plant fresh weight. Lower leaf nitrate contents occurred under increased substitution of NF with AC. Thus, partial substitution of NF with AC could be a sustainable option for improving growth and yield while reducing nitrate accumulation in the leaf of green onion in Ultisols. Keywords: azolla compost substitution, integrated nutrient management, synthetic fertilizer reduction,  green onion agronomic performance, Ultisols Keywords: azolla compost, green onion, integrated nutrient management, chemical fertilizer reduction,  Ultisols
Enhancing Nitrogen Use Efficiency, Growth, and Biomass Yield of Pak Choy on Coastal Entisols with a Combination of Reduced Nitrogen Fertilizer and Zeolite-Based Slow-Release Fertilizer Resti , Cynthia; Marwanto; Handajaningsih, Merakati
Akta Agrosia Vol 27 No 2 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.27.2.52-63

Abstract

Coastal sandy soil has a low capacity to hold water and nutrients, trigerring high doses of fertilizer application. Therefore, this study aims to determine the optimal mixture of urea and zeolite-based slow-release fertilizers (SRF) that can reduce application of inorganic fertilizer while improving nitrogen use efficiency (NUE), growth dynamics, and yield of pak choy cultivated on coastal Entisols. This research was conducted from October to December 2023 in the Plant and Soil Research field  on the outskirts of the Bengkulu University campus. The treatments used were a combination of urea and SRF, consisting of 0% N-Urea, 100% N-Urea, 75% N-Urea + 25% N-SRF, 50% N-Urea + 50% N-SRF, 25% N-Urea + 75% N-SRF, and 100% N-SRF. The study was set up in a completely randomized design with five replications. The results demonstrated that the treatments enhanced the growth and biomass yield of pak choy, as well as NUE. The combination of 50% N-Urea + 50% N-SRF (equal to 200 kg urea ha-1 + 608.5 kg SRF ha-1) resulted in higher leaf area, fresh shoot weight, dry shoot weight, fresh plant weight, N- uptake, and NUE compared with the application of 100% N-Urea (400 kg urea ha-1). The NUE for the combination of 50% N-Urea + 50% N-SRF was 36.36%, which was 13.63% compared to 100% N-Urea with an NUE of 34.09%. Therefore, using this SRF allows for a reduction in urea requirements by up to 50%.NUE and nitrogen uptake show a very high positive association (r=0.941, p<0.01). Keywords: activated zeolite matrix, , coastal sandy soil, inorganic nitrogen fertilizer, slow- release fertilizer 
Co-Authors Alnopri Alnopri, Alnopri Ardhiani Sari, Ganisa Asron Saputra CANDRA GUNAWAN Chiristiana Dwi Putra, Dodo Handoko Eko Suprijono Haryanti, Yenda I Gede Yusa I Nyoman Prabu Buana Rumiartha I Wayan Parsa Ibrahim Musa, Ibrahim Lilis Zulaicha Listiani, Kiara Ayu Marlin Masdar Meliana Putri Merakati Handajaningsih Merakati Handayaningsih Momot, Ruth Maria Muflihati, . Nanik Setyowati Perdana, Doni Maja Resti , Cynthia Robbidi, Kamran Septiana Anggraini, Septiana Sudirman, Fauziah Lily Anggraeni Viani, Reza Junita Okta Yaser, Muhamad Yulian