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All Journal Jurnal Biologi Tropis Journal of Agriculture (JoA) Agroista: Jurnal Agroteknologi Alamtana
Rochmiyati, Sri Manu
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Immunology & microbiology

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Journal : Journal of Agriculture (JoA)

 1 
The Effect of Planting Media and Types of NPK Fertilizers (Compound and Mixed) on the Growth of Oil Palm Seedlings in Pre-Nursery Firmansyah, Ivan Dwi; Rochmiyati, Sri Manu; Ardiani, Fani
Journal of Agriculture Vol. 3 No. 03 (2024): Research Articles November 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i03.4662

Abstract

This study aims to determine the effect of planting media composition and types of NPK fertilizers (compound and mixed) on the growth of pre-nursery oil palm seedlings. The study was conducted in September - November 2023 at the Instiper Yogyakarta Education and Research Garden. This study used a factorial experimental method arranged in a completely randomized design (CRD) consisting of two factors, namely the composition of the planting media (clay, sand, sand + clay + organic fertilizer, sand + clay, clay + organic fertilizer, sand + organic fertilizer) and types of NPK compound fertilizers (compound fertilizer 15-15-15 and mixed fertilizer 0.30g Urea + 0.30g TSP + 0.25 g MOP). The results showed that the treatment of NPK fertilizer types (compound and mixed) and planting media composition interacted significantly with the height of pre-nursery oil palm seedlings, where the combination of clay soil media with mixed fertilizers produced a plant height of 25.90 cm. The treatment of planting media composition significantly affects the number of leaves, where the composition of sand + clay + organic fertilizer produces the highest number of leaves, which is 4 strands. Furthermore, treating NPK fertilizer types (compound and mixed) also significantly affects the diameter of pre-nursery oil palm seedlings, where using mixed fertilizers gives the highest stem diameter results, which is 9.46 cm.
The Effect of Planting Media and Types of NPK Fertilizers (Compound and Mixed) on the Growth of Oil Palm Seedlings in Pre-Nursery Firmansyah, Ivan Dwi; Rochmiyati, Sri Manu; Ardiani, Fani
Journal of Agriculture Vol. 3 No. 03 (2024): Research Articles November 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i03.4662

Abstract

This study aims to determine the effect of planting media composition and types of NPK fertilizers (compound and mixed) on the growth of pre-nursery oil palm seedlings. The study was conducted in September - November 2023 at the Instiper Yogyakarta Education and Research Garden. This study used a factorial experimental method arranged in a completely randomized design (CRD) consisting of two factors, namely the composition of the planting media (clay, sand, sand + clay + organic fertilizer, sand + clay, clay + organic fertilizer, sand + organic fertilizer) and types of NPK compound fertilizers (compound fertilizer 15-15-15 and mixed fertilizer 0.30g Urea + 0.30g TSP + 0.25 g MOP). The results showed that the treatment of NPK fertilizer types (compound and mixed) and planting media composition interacted significantly with the height of pre-nursery oil palm seedlings, where the combination of clay soil media with mixed fertilizers produced a plant height of 25.90 cm. The treatment of planting media composition significantly affects the number of leaves, where the composition of sand + clay + organic fertilizer produces the highest number of leaves, which is 4 strands. Furthermore, treating NPK fertilizer types (compound and mixed) also significantly affects the diameter of pre-nursery oil palm seedlings, where using mixed fertilizers gives the highest stem diameter results, which is 9.46 cm.
The Effect of Growth and Root Nodules of Mucuna Bracteata on Various Planting Media Compositions Samiarjo, Roso; Rochmiyati, Sri Manu; Noviana, Githa
Journal of Agriculture Vol. 4 No. 02 (2025): Research Articles July 2025
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v4i02.6686

Abstract

This study aims to determine the effect of growth and root nodules of Mucuna bracteata plants on various planting media compositions. This research was conducted at the Kebun Pendidikan dan Penelitian (KP2) INSTIPER, Maguwoharjo, Depok District, Sleman Regency, from December 2022 to April 2023. This research method is an experimental study arranged in a Completely Randomized Design (CRD). The research treatment consists of 12 treatments consisting of sand+clay+manure, sand+clay+green manure, sand+clay+bioslurry, sand+manure, sand+green manure, sand+bioslurry, clay+manure, clay+green manure, clay+bioslurry, sand, and clay. Each media mixture uses the same volume ratio. The research data were analyzed using ANOVA (Analysis of Variance) at a significance level of 5%, and the real effect was further tested using DMRT at a level of 5%. The results of the study showed that the composition of sand with manure gave the highest fresh root weight results of Mucuna bracteata, namely 8.59 grams, compared with other compositions, such as clay soil, which gave the lowest root weight results, namely 2.07 grams. The sand and bioslurry mixture produced the highest number of root nodules, root nodule weight, and number of effective root nodules in Mucuna bracteata, with figures of 28.40 nodules, 1.05 grams, and 14.80 nodules, respectively. The sand and bioslurry mixture results showed significant differences from those of other planting media mixtures.
Co-Authors Dharmawati, Nuraeni Dwi Fani Ardiani Firmansyah, Ivan Dwi Githa Noviana Himawan, Achmad Jaya, Galang Indra Nurizki, Ilhan Putra, Heru Admadja Rahayu, Enny Samiarjo, Roso Saputra, Syahid Sihite, Yudha Van Heidel