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Nitrogen Fertilizer Reduction on Way Apo Buru and Inpari 33 Rice Varieties Slameto; Fariroh, Indri; Rusdiana, Riza Yuli; Kriswanto, Budi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 50 No. 2 (2022): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (467.381 KB) | DOI: 10.24831/jai.v50i2.39299

Abstract

Pemupukan urea di petani umumnya dilakukan dengan dosis yang lebih tinggi dari standar pemerintah. Penggunaan pupuk urea berlebih dapat menurunkan produksi, kualitas tanaman, serta pencemaran lingkungan. Tujuan percobaan ini adalah melihat respon pertumbuhan, hasil dan kualitas padi sawah pada media N rendah. Rancangan percobaan menggunakan rancangan acak kelompok faktorial, dosis pupuk urea (0%, 40%, dan 100% 250 kg ha-1) dan varietas padi (Way Apo Buru dan Inpari 33). Parameter yang diamati adalah tinggi tanaman (cm), jumlah anakan, jumlah daun, chlorophyl fluorescence (unit), gabah isi (%), jumlah malai, kandungan protein terlarut (mg g-1), vitamin C (mg g-1), dan gula reduksi (mg g-1). Hasil penelitian menunjukkan bahwa reduksi pupuk urea 40% menghasilkan jumlah anakan yang sama tinggi dengan dosis standar (250 kg ha-1). Pemupukan urea dosis standar menghasilkan kandungan vitamin C, nilai chlorophyl fluorescence dan jumlah malai yang tertinggi. Inpari 33 menghasilkan karakter tinggi dan persentase gabah isi yang lebih baik sementara Way Apo Buru menghasilkan jumlah daun yang lebih tinggi. Reduksi 40% dosis urea pada Inpari 33 menghasilkan kandungan protein terlarut tertinggi. Inpari 33 menghasilkan gula reduksi terendah sehingga dapat digunakan sebagai pangan alternatif bagi penderita diabetes. Kata kunci: gula reduksi, kandungan klorofil, protein terlarut, vitamin C
GROWTH AND PRODUCTION OF SHALLOT (Allium ascalonicum L.) WITH GUANO ORGANIC FERTILIZER AND TRICHODERMA SP APPLICATION Widuri, Laily Ilman; Amalia, Dita; Fariroh, Indri; Harsanti, Restiani Sih; Slameto, Slameto
Agrisaintifika: Jurnal Ilmu-Ilmu Pertanian Vol. 9 No. 3 (2025): Agrisaintifika
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/ags.v9i3.7475

Abstract

Shallot (Allium ascalonicum L.) is an important horticultural commodity with high economic value, but its productivity has declined, especially in several production centers, including Probolinggo Regency. Disease attacks are one of the factors causing the decline in production, prompting farmers to use chemicals to control the disease. The use of chemical fungicides frequently poses risks to the environment and food safety, thereby highlighting the need for eco-friendly alternatives such as biological agents (e.g., Trichoderma sp.) and organic fertilizers like guano. This study aimed to determine the effect of Trichoderma sp. and guano fertilizer on the growth and yield of shallots. The study used a Factorial Randomized Block Design (RBD) with the first factor being the dose of Trichoderma sp 0 (T1), 15 (T2), 25 (T3), 35 (T4) g/plant, and the second factor was guano fertilizer treatment at doses of 0 (G1), 35 (G2), 45 (G3), and 55 (G4) g/plant. The results showed that there was no interaction between Trichoderma sp. and guano fertilizer treatments on the growth and yield of shallots. However, both separately had a significant effect on several growth and yield parameters. Guano fertilizer had a significant effect on crown height, stem diameter, fresh and dry bulb weight, and root volume with an optimum dose of 45 g/plant. Meanwhile, the application of Trichoderma sp. had a significant effect on bulb diameter. The combination of biological agents and organic fertilizers demonstrated significant potential to enhance shallot productivity in a sustainable and environmentally responsible way. Keywords: Biofertilizer, Biological agents, Environmentally friendly, Organic fertilizer,
Mycorrhizal Seed Coating Enhances Root Volume and Yield Components of Edamame Soybean Indri Fariroh; Didik Pudji Restanto
Jurnal Ilmu Pertanian Vol 11, No 1 (2026): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.105717

Abstract

Elevated osmotic pressure in the root zone under saline conditions acts as primary constraint to crop production by disrupting essential physiological growth process. One effective strategy for soil saline management involves the use of mycorrhizal inoculants. Delivering these microbes via seed coating is a streamlined, economical, and accurate approach that optimizes plant performance under diverse stress condition. This study aimed to evaluate the effect of mycorrhizal seed coating on the growth and yield of edamame under saline conditions. This research was arranged in a randomized complete block design with two factors, consisting of mycorrhizal seed coating (0 and 12 g mg-1) and planting media (soil, saline soil, soil + saline soil (1:1)). There were six treatment combinations, and each treatment was replicated four times, resulting in a total of 24 experimental units. The observed variables include plant height, root volume, number of pods per plant, weight of pod per fruit, number of seeds per plant, and weight of 100 seeds. The result showed that mycorrhizal seed coating had potential to improve edamame root development and optimize phosphorus uptake. While vegetative height remained unaffected, the treatment substantially improved yield components, including number of pods, seed weight, and overall seed weight. The efficacy of colonization is contingent upon soil pH and phosphorus availability, highlighting the importance of site-specific conditions. Consequently, mycorrhizal seed coating represents a practical and cost-effective strategy for improving edamame performance, offering a viable solution for enhancing crop resilience and yield in nutrient-deficient or saline environments.