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One of the causes of the low productivity of rice grown on peat soils was the high levels of of toxic phenolic compounds in the soil. Development of tolerant rice varieties is one of strategies to grow rice on peat soils. The aims of this research were to select rice varieties tolerant to peat soils and to study the correlation between the plant phenolic acid content with plant tolerance to peat soil. This research was conducted at the Seed Farm Centre Lubuk Minturun, Padang from February to Jul Haryoko, Widodo; Kasli, ,; Suliansyah, Irfan; Syarif, Auzar; Prasetyo, Teguh Budi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 2 (2012): 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 | DOI: 10.24831/jai.v40i2.6358

Abstract

One of the causes of the low productivity of rice grown on peat soils was the high levels of of toxic phenolic compounds in the soil. Development of tolerant rice varieties is one of strategies to grow rice on peat soils. The aims of this research were to select rice varieties tolerant to peat soils and to study the correlation between the plant phenolic acid content with plant tolerance to peat soil. This research was conducted at the Seed Farm Centre Lubuk Minturun, Padang from February to July 2009. The research consisted of two experiments i.e. in peat soil and in mineral soil. The experiments used a completely randomized design using 21 varieties of rice as treatments which were replicated four times. The results showed that there were nine rice varieties categorized as tolerant to peat soil. These tolerant varieties showed higher stress tolerance index (STI), demonstrated by a high level of phenolic acids (coumaric, syringic, and ferulic) in the plant tissues. The STI value had positive correlation with the content of plant phenolic acids, thus the level of plant phenolic acids can be used as an indicator to determine tolerant rice varieties in peat soils. Keywords: peat soil, phenolic acids, tolerant rice, STI
Mekanisme Adaptasi Jagung terhadap Cekaman NaCl: Pola Serapan Anion dan Kation Utama, Muhammad Zulman Harja; Haryoko, Widodo
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 47 No. 3 (2019): 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 (437.417 KB) | DOI: 10.24831/jai.v47i3.25439

Abstract

Salt solubility is the abiotic pressure which has the most effect on the loss of plant quantity and quality. Salinity not only makes plants stressful but also presents severe constraints on crop production so an attempt to understand plant adaptation mechanisms is important for expanding agricultural production on saline soils. This study aimed to obtain a mechanism for the adaptation of hybrid and composites maize to NaCl stress through anion and cation absorption patterns. The experiments were carried out at the LLDikti Region X Laboratory from May to August 2016. The experiments were arranged in a factorial complete randomized design with three replications. The first factor was corn varieties, namely: hybrid corn (Pioneer 22 and Bisi 12), and composite corn (Bisma and Sukmaraga). The second factor was level of NaCl, namely: 0.0 mg kg-1 NaCl pH 5.0, and 4,000 mg kg-1 NaCl pH 5.0. Measurement of anions and cations using Spectroquant Thermoreator TR Nova 420. The adaptability of hybrid maize and composites to NaCl stress occurred through the mechanism of anion absorption and cation metabolism. The difference in the percentage of NO3-, NO2-, PO4-, NH4+, and K+ levels between hybrid maize varieties and composites showed a difference in the adaptation ability of maize varieties to salinity stress. Keywords: abiotic, mechanism, salinity, varieties
PERTUMBUHAN, PRODUKSI DAN TOLERANSI VARIETAS JAGUNG (Zea  may L.) PADA TANAH GAMBUT HEMIK Haryoko, Widodo; Thesiwati, Aslan Sari; Utama, M. Zulman Harja; Hariyanto, Peri; Mutia, Yopa Dwi
Jurnal Agroqua: Media Informasi Agronomi dan Budidaya Perairan Vol 22 No 1 (2024): Jurnal Agroqua
Publisher : University of Prof. Dr. Hazairin, SH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32663/ja.v22i1.4468

Abstract

Corn is a highly adaptable plant and can be cultivated in various soil fertility conditions.  Testing of corn varieties on hemic peat soils and while maintaining hydrological function is still very limited so that there is a void of information about corn varieties tolerant of toxic organic acids in hemic peat soils. The purpose of the experiment was to determine the growth, production and tolerance of corn varieties on hemic peat soils. The experiment was conducted using a complete randomized design by testing 4 varieties of corn namely Pioneer 23, NK 22, Bisi 18 and Pertiwi 3 repeated 5 times.  The experimental results showed that the Bisi 18 corn variety and Pertiwi 3 variety with production of 7.66 and 7.68 t ha-1 respectively.showed greater STI in hemik peat rice fields with high levels of toxic organic acids than STI Pioneer 23 variety and NK 22 variety with production of 7.48 and 7.53 t ha-1 respectively.
Optimasi Konsentrasi Nutrisi Terhadap Karakter Pertumbuhan Vegetatif Dan Akumulasi Biomassa Tanaman Mint (Mentha piperita L.) Pada Sistem Hidroponik Rakit Apung Mutia, Yopa Dwi; Rizki, Rizki; Rasdanelwati, Rasdanelwati; Darlis, Olivia; Haryoko, Widodo
Jurnal Sains Agro Vol 10, No 2 (2025): Jurnal Sains Agro
Publisher : Universitas Muara Bungo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36355/jsa.v10i2.1928

Abstract

Tanaman mint (Mentha piperita L.) merupakan tanaman daun aromatik bernilai ekonomi tinggi yang produktivitasnya berkaitan erat dengan pertumbuhan vegetatif dan ketersediaan nutrisi. Sistem hidroponik rakit apung memungkinkan pengelolaan nutrisi secara presisi, namun informasi mengenai konsentrasi nutrisi optimal untuk budidaya tanaman mint masih terbatas. Penelitian ini bertujuan mengevaluasi pengaruh berbagai konsentrasi nutrisi AB Mix terhadap pertumbuhan vegetatif dan biomassa tanaman mint yang dibudidayakan pada sistem hidroponik rakit apung. Penelitian disusun menggunakan Rancangan Acak Lengkap dengan lima taraf konsentrasi nutrisi AB Mix (100, 400, 700, 1000, dan 1300 ppm) dan lima ulangan. Parameter yang diamati meliputi luas daun, jumlah daun, jumlah cabang produktif, berat basah, dan berat kering tanaman. Hasil penelitian menunjukkan bahwa peningkatan konsentrasi nutrisi hingga tingkat optimum secara nyata meningkatkan pertumbuhan vegetatif dan akumulasi biomassa, sedangkan konsentrasi yang lebih tinggi tidak memberikan peningkatan tambahan. Jumlah cabang produktif tertinggi diperoleh pada konsentrasi 1000 ppm dan menurun pada konsentrasi yang lebih tinggi. Analisis korelasi menunjukkan adanya hubungan kuat antara jumlah daun dan biomassa segar, sedangkan luas daun dan jumlah cabang produktif berkontribusi nyata terhadap biomassa kering. Secara keseluruhan, konsentrasi nutrisi 1000 ppm direkomendasikan sebagai tingkat nutrisi yang optimal secara fisiologis untuk budidaya tanaman mint pada sistem hidroponik rakit apung.