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All Journal Agrotechnology Research Journal Journal of Biodiversity and Biotechnology
Puji Harsono
Department Agrotechnology, Faculty Of Agriculture, Universitas Sebelas Maret
Agriculture, Biological Sciences & Forestry

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Role of Growth Regulators and Plant Media on Growth and Yields of Mint Sulandjari Sulandjari; Bambang Pujiasmanto; Supriyono Supriyono; Puji Harsono; Nurin Adyanisa Fajrin
Agrotechnology Research Journal Vol 8, No 1 (2024): Agrotechnology Research Jurnal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agrotechresj.v8i1.83639

Abstract

There is a significant industrial demand for products produced by the mint plant (Mentha piperita L.), yet Indonesia cannot meet all of that need. One of the efforts to increase mint plant production is using manure and atonic growth regulators in the right concentration. The method used was a Factorial Randomized Complete Block Design (RCBD) with two factors. The first factor was the composition of the planting media (soil: husk charcoal, soil: husk charcoal; cow manure, soil: husk charcoal: goat manure, soil: husk charcoal: chicken manure, with a ratio of 1: each: 1:1). The second factor was the atonic concentration (0, 1, 2, 3 mL.L-1). The results showed that using chicken manure gave the best results for growth and yield. Atonic administration with a concentration of 2.05 mL.L-1 gave optimum results on the fresh weight of roots, and a concentration of 2,06 mL.L-1 gave optimum results on the dry weight of roots. The combination of the two treatments did not significantly affect the observed variables.
Response of Growth and Yield of Chili to the Doses of NPK Fertilizer Application Puji Harsono; Devi Mei Linda Kurniawati; Aprilia Ike Nurmalasari; Eddy Tri Haryanto
Agrotechnology Research Journal Vol 9, No 2 (2025): Agrotechnology Research Jurnal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agrotechresj.v9i2.93997

Abstract

The addition of NPK fertilizer has the potential to increase productivity. This research aims to obtain the optimum dose of compound NPK fertilizer to increase the growth and yield of chilli. This experiment was conducted in the chili fields of Sendangijo Village, Selogiri District, Wonogiri Regency, Central Java from May-September 2023. The method used was a Randomized Complete Block Design (RCBD) non factorial and four replications. The factor used dose of compound NPK (0, 50, 100, and 150 kg ha-1). The variables observed were plant height, leaf area, number of dichotomous branches, fresh and dry weight of stover, fruiting age, fruit length, number of fruits per plant, and fruit weight per plant. Data analysis was carried out using analysis of variance (ANOVA) on the level of α5%. If there is a significant difference, then further testing is done with an orthogonal polynomial test. The results showed that  dose of NPK fertilizer did not show a significant effect on plant height, leaf area, number of branches, fruiting age, fruit length, number of fruits per plant and fruit weight per plant of chilli.
Growth and Yield Responses of Red Chili to Various Foliar Fertilizers Puji Harsono; Moch. Irfan Khakim; Gani Cahyo Handoyo; Supriyono Supriyono
Agrotechnology Research Journal Vol 9, No 1 (2025): Agrotechnology Research Journal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agrotechresj.v9i1.96737

Abstract

Red chili production in certain areas of Central Java, including Sendangijo Village, Wonogiri Regency, remains relatively low. One alternative to improve its growth and yield is foliar fertilization. This study aimed to determine the most effective type of foliar fertilizer for enhancing the growth and yield of red chili. The study was conducted from May to September 2023 in Sendangijo Village using a Randomized Complete Block Design with a single factor consisting of four treatments: no foliar fertilizer, foliar fertilizer A. NPK 11-8-6, B. NPK 20-15-15, and C. NPK 10-2-7, each with six replications. Observed variables included plant height, number of dichotomous branches, number of leaves, leaf area, fresh and dry weight of biomass, number of fruits, fresh weight of fruits per plant, and productivity per hectare. The result showed that the leaf area of red chili pepper given foliar fertilizer NPK 20-15-15  was larger than the foliar fertilizer NPK 11-8-6, NPK 10-2-7, and without foliar fertilizer. Foliar fertilizer NPK 20-15-15 also gave a heavier dry weight of biomass compared to foliar fertilizer NPK 11-8-6, NPK 10-2-7, and without foliar fertilizer. However, foliar fertilizer application did not significantly affect the number of fruits, the fresh weight of fruits per plant, or productivity per hectare.
Growth Response and Yields of Variety of Sorghum on Multiple NPK Fertilization in Dry Land Samanhudi Samanhudi; Puji Harsono; Sri Hartati; Iswahyudi Iswahyudi; Naufal Ghazy Wicaksono
Journal of Biodiversity and Biotechnology Vol 4, No 1 (2024)
Publisher : Pusat Penelitian dan Pengembangan Bioteknologi dan Biodiversitas (P3BB) LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jbb.v4i1.108195

Abstract

Land degradation is a major constraint to agricultural productivity, with drylands particularly vulnerable to critical conditions. Sorghum (Sorghum bicolor L. Moench) is a promising crop for such environments due to its adaptability and dual-purpose value for both biomass and sugar-rich stalks. This study evaluated the growth and yield response of four sorghum varieties—Super, Suri, Numbu, and Keller—to different rates of compound NPK fertilizer under dryland conditions. The experiment was arranged in a Randomized Complete Block Design (RCBD) with two factors: sorghum varieties and five fertilizer doses (0, 10, 12, 14, and 16 g plant⁻¹), replicated three times. Data were subjected to ANOVA, and treatment means were compared using DMRT at the 5% significance level. Results showed that the Keller variety consistently produced the best agronomic performance, including plant height, number of leaves, stem segments, stem diameter, and biomass dry weight. Moreover, Keller combined with 12 g plant⁻¹ of NPK fertilizer produced the highest sap content (14.0% Brix), highlighting its potential as a dual-purpose sorghum. Leaf traits were most responsive at 14 g plant⁻¹, indicating that moderate-to-high fertilization enhances vegetative growth without excessive input. These findings demonstrate that varietal selection coupled with appropriate nutrient management is crucial for optimizing sorghum production in dryland systems. The study provides practical guidance for farmers and can inform future breeding and fertilizer recommendation programs for sustainable sorghum cultivation.
Co-Authors Ahmad Yunus Aprilia Ike Nurmalasari Arifiya Qifni Bambang Pujiasmanto Bambang Pujiasmanto Bambang Pujiasmanto Bambang Pujiasmanto Devi Mei Linda Kurniawati Eddy Tri Haryanto Eddy Triharyanto Ferdifta Wahyu Anggita Gani Cahyo Handoyo Hery Widijanto Hery Widijanto Iswahyudi Iswahyudi Moch. Irfan Khakim Naufal Ghazy Wicaksono Nurin Adyanisa Fajrin Pardono Pardono Pardono Pardono Retno Wijayanti Samanhudi Samanhudi Sri Hartati Sulandjari Sulandjari Sulandjari Sulandjari Sulandjari Sulandjari Supriyono Supriyono Supriyono Supriyono Supriyono Supriyono Supriyono Supriyono T D Sulistyo Wisnu Adi Nugraha Permana Putra