Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Agrikultura Makara Journal of Science
Jonharnas, Jonharnas
Unknown Affiliation
Agriculture, Biological Sciences & Forestry

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Peluang Pengembangan Inpari IR Nutri Zinc dan Perbenihan Padi di Sumatera Utara Chairuman, Novia; Batubara, Siti Fatimah; Aryati, Vivi; Jonharnas, Jonharnas; Helmi, Helmi
Agrikultura Vol 33, No 3 (2022): Desember, 2022
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/agrikultura.v33i3.41739

Abstract

Inpari IR Nutri Zinc adalah salah satu varietas padi yang mempunyai keistimewaaan karena berasnya mengandung Zn tinggi sebagai  unsur yang sangat bermanfaat untuk mencegah kekurangan gizi.  Inpari IR Nutri Zinc sebagai produk biofortifikasi, menjadi salah satu komponen dalam program prioritas nasional untuk mengatasi stunting di Indonesia. Varietas Inpari IR Nutri Zinc sangat berpotensi untuk dikembangkan pada berbagai agroekosistem, bila didukung oleh komponen teknologi yang sesuai agar pertumbuhan dan hasilnya maksimal.  Sasaran yang tepat untuk pengembangan Inpari IR Nutri Zinc adalah daerah-daerah dengan tingkat kemiskinan tinggi, yaitu golongan masyarakat yang mengandalkan beras sebagai bahan pangan pokok sekaligus sumber mineral yang dapat dikonsumsi setiap hari. Peluang pengembangan varietas ini menghadapi berbagai tantangan, antara lain preferensi petani dan permodalan yang masih rendah, serta teknologi pengolahan hasil untuk mendukung produk olahan berasnya bernilai jual tinggi yang belum berkembang. Hilirisasi varietas Inpari IR Nutri Zinc yang kaya unsur Zn ini belum terlaksana, karena belum berkembangnya varietas di tingkat penangkar benih maupun di tingkat petani, serta belum tersosialisasikannya keunggulan khusus varietas ini.
Combined Antifungal Activity of Secondary Metabolites from Piper aduncum and Additive Oils against Sclerotium rolfsii, A Causal Agent of Stem Rot on Patchouli Cuttings Idris, Herwita; Nurmansyah, Nurmansyah; Abdullah, Syahrial; Riska, Riska; Budiyanti, Tri; Afrizon, Afrizon; Jonharnas, Jonharnas; Rosmanah, Siti; Hidayat, Taufik; Gustia, Helfi
Makara Journal of Science Vol. 30, No. 3
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aimed to evaluate the antifungal activity of Piper aduncum secondary metabolites along with additive oils against Sclerotium rolfsii, causing stem rot on patchouli cuttings. It was conducted in two stages—an in vitro experiment using a completely randomized design with seven treatments: P. aduncum oil, combinations of P. aduncum oil with citronella grass, lemongrass, cinnamon leaf, and cloves leaf oils, a synthetic pesticide (propineb 70%), and without essential oils. The second was carried out in vivo using a factorial completely randomized design, in which the first factor was five antifungal formulations, and the second was the spraying interval. The study was done from January to December 2022 at the Laing Solok Experimental Garden, West Sumatra, Indonesia. GC–MS analysis identified four major compounds contained in P. aduncum, citronella, lemongrass, and cinnamon leaf oils, and three in clove leaf oil. All five formulations inhibited fungal growth, with the best combination being P. aduncum + citronella oil, which inhibited growth by 91.85% and biomass by 91.76%. No marked variation with synthetic pesticides as a positive comparison was observed. In the in vivo test, a combination of P. aduncum + citronella and clove leaf oils, which was applied once a week, demonstrated the maximal inhibition, resulting in 0% disease intensity. For a once-fortnight spraying interval, disease intensity increased to 33.3%–100%.
Co-Authors AFRIZON AFRIZON, AFRIZON Aryati, Vivi Batubara, Siti Fatimah Helfi Gustia Helmi Helmi HERWITA IDRIS, HERWITA Novia Chairuman Nurmansyah Nurmansyah, Nurmansyah Riska Riska Rosmanah, Siti Syahrial Abdullah, Syahrial Taufik Hidayat Tri Budiyanti