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All Journal Jurnal Fitopatologi Indonesia Jurnal Kridatama Sains dan Teknologi ZIRAA'AH MAJALAH ILMIAH PERTANIAN
Putri Diana
Universitas Andalas Padang
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Medicine & Pharmacology Social Sciences

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Eksplorasi Bakteri Endofit dari Akar Tanaman Adam Hawa dan Potensinya sebagai Agens Hayati dan Pemacu Pertumbuhan Tanaman Padi Ankardiansyah Pandu Pradana; Diana Putri; Abdul Munif
Jurnal Fitopatologi Indonesia Vol 11 No 3 (2015)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (286.157 KB) | DOI: 10.14692/jfi.11.3.73

Abstract

Rhoeo discolor has been known to have a good adaptation to various environmental conditions. This character might be due to mutualistic association with endophytic bacteria. The objective of this study was to isolate endophytic bacteria from roots of R. discolor and to evaluate their potency as biocontrol agents and plant growth promoters. The methods to isolate endophytic bacteria involved the following methods, sterilization of root surface, grinding of root tissues, dilution, and plating in the medium tryptone soya agar (TSA). A total of 21 isolates of endophytic bacteria were isolated from the roots of R. discolor. Based on hypersensitivity test on tobacco leaves, 19 isolates showed negative reaction (no necrosis symptom) and only 2 isolates showed positive reaction (necrosis was developed). The results on biocontrol and growth promoters assay showed that 7 isolates were able to inhibit the growth of Fusarium oxysporum under in vitro test and 12 isolates were able to increase the growth of rice seedlings.
Pengaruh Beberapa Dosis Abu Janjang Kelapa Sawit Terhadap Pertumbuhan Bibit Kakao (Theobroma cacao L.) Siska Efendi; Putri Diana; Nasrez Akhir
ZIRAA'AH MAJALAH ILMIAH PERTANIAN Vol 45, No 1 (2020)
Publisher : Pusat Publikasi Jurnal Universitas Islam Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/zmip.v45i1.2601

Abstract

          The plant medium condition in the nursery will affect the growth of cacao seedlings. The oil Palm ash is one of the soil ameliorants because it content complete nutrient both macro and micro, the capability to increasing soil pH and having a high base saturation. The objectives of the research were to study the effect of oil palm ash on the growth of cacao seedlings and to get the dose for cacao in nurseries. This research was conducted in experimenta field of 3rd Campus Andalas University Dharmasraya, in December 2018 until March 2019. The experimental method used was a Completely Randomized Design (CRD) consisted of 5 treatments and 5 replications, each of experiment unit consistent of 2 plant polybag so the total of 50 plants was obtained. The Treatments were some doses of oil palm ash of 0 g of oil palm ash/polybag, 150 g of oil palm ash/polybag, 300 g of oil palm ash/polybag, 450 g of palm oil ash/polybag, and 600 g of oil palm ash/polybag. Data analysis was performed by analysis of variance (F test) at the level of 5%. If its results are significant, then further tests with DNMRT at the level of 5%. The results of the present study showed that oil palm ash had an influence on the growth of cacao seedlings on the variables of stem height, stem diameter, number of leaves, and the root length. The dosage of 450 g oil palm ash/polybag showed the best results for stem height and number of leaves of cacao seedlings, while the dosage of 600 g oil palm ash/polybag showed the best results for stem diameter and root length of cacao seedlings. The recommended dose for cacao in the nursery is 450 g of oil palm ash/polybag. 
Interaksi Faktor Lingkungan dan Sistem Budidaya terhadap Serangan Penyakit Karat Daun pada Tanaman Jagung Putri, Diana
Jurnal Kridatama Sains dan Teknologi Vol 7 No 01 (2025): Jurnal Kridatama Sains dan Teknologi
Publisher : Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/kst.v7i01.1636

Abstract

Corn is an important food crop in the world besides rice and wheat. In Indonesia, corn is not only used as food but also as animal feed and industrial materials, so the need for corn will continue to increase. Many obstacles are limiting factors in meeting the needs and productivity of corn, one of which is the attack of diseases such as corn leaf rust disease by Puccinia sp. This study aims to determine the incidence and severity of leaf rust disease attacks on monoculture and polyculture lands and to determine the importance of environmental factors on the development of the disease. The study was conducted in the experimental field and Phytopathology Laboratory of the Agroecotechnology Study Program, Campus III, Andalas University, Dharmasraya. The study was descriptive in nature using a survey method. Observation parameters included land conditions, symptoms of corn leaf rust, microscopic identification of pathogens, and the incidence and severity of the disease. The results showed that the pathogen causing leaf rust was identified as Puccinia polysora with symptoms of attack in the form of brownish yellow spots (pustules). The high incidence of the disease reached 100% while the severity reached 11.42% in polyculture lands and 15.00% in monoculture lands. This shows that the severity of corn leaf rust disease in the experimental land of the Agroecotechnology Study Program is included in the mild category
Co-Authors Abdul Munif Ankardiansyah Pandu Pradana Nasrez Akhir Siska Efendi