Nurhayati Damiri
Universitas Sriwijaya

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POPULATION DYNAMICS OF RHIZOBACTERIA AND ITS POTENCY AS A BIOLOGICAL CONTROL AGENT TO CONTROL FUSARIUM DISEASE IN THE NURSERY OF AGARWOOD (Aquailaria malaccensis Lamrk) Wahyuni, Tri; Mulawarman, Mulawarman; Damiri, Nurhayati
AGRIVITA, Journal of Agricultural Science Vol 37, No 3 (2015): OCTOBER
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v37i3.473

Abstract

Agarwood is a resin product produced by particular trees and has a certain high comercial value. In Central Bangka Regency, agarwood is the main commodity of forest. The research was aimed to determine the dynamic population of  rhizobacteria and its potential as a biological control agent to control Fusarium disease in the nursery of agarwood  (Aquailaria  malaccensis Lamrk). The research was carried out by using exploration and identification methods. Sixty nine bacterial isolates were obtained from 20 samples. The samples taken were from Pangkalan Baru and Koba districts. After selection process, 49 bacterial isolates were tested for the capacity of inhibition. Results showed that 37.50 % of the bacterial isolates indicated a strong inhibition capacity, meanwhile 58.33% indicated a moderate and only 4.70% possessed a weak inhibition. Pseudomonas fluorescens, P. aerogi-nosa, P. malthophilia and Klebsiella pnemoniae were identified from the selected isolates. These bacteria were potentially able to protect plants against Fusarium disease and to promote plant growth. This research needed to be continued at the field level in order to know the real effects on plant.
PEMANFAATAN LIMBAH ORGANIK DALAM PEMBUATAN BIOINSEKTISDA BERBASIS BACILLUS THURINGIENSIS SEBAGAI AGENS PENGENDALIAN HAMA TANAMAN CAISIM BRASSICA JUNCEA Astuti, Dessy Tri; Damiri, Nurhayati; Pujiastuti, Yulia; Afriani, Siti Rakhmi
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 7, No 2 (2018): JLSO
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (715.623 KB) | DOI: 10.33230/JLSO.7.2.2018.350

Abstract

Astuti et al, 2018. Utilization of Organic Waste in the Making of Bacillus thuringiensis-based Bioinsecticides as Agents for Control of Caisim Brassica juncea Pests. JLSO 7(2):136-143. Bacillus thuringiensis was one of the entomopathogenic bacteria that can produces toxic crystal proteine (?-endotoksin). The use of bioinsecticide as a biological agent in pest control was one component of integrated pest control (IPM). The aimed of this reseacrh was to know the population of pests in plants and the percentage of damage to plants that exist in each treatment. The research was conducted in a vegetable garden in the Banyuasin district in November 2017 until January 2018. The research method used a randomized block design with 5 treatments and 4 blocks. The treatment was Bacillus thuringiensis KJ3R5 cultured in coconut water and rice washing water  (A), Bacillus thuringiensis LC2 cultured in coconut water and tofu wastewater (B), commercial Bacillus thuringiensis (C), inorganic insecticide (sidametrin) (D), and water as control (E). The variables observed were arthropod populations on the canopy and ground surface of choy sum (Brassica rapa var. parachinensis or Brassica chinensis var. parachinensis) plants. The results showed that 4 species of pests i.e. Pyllotreta crucifera, Spodoptera litura, Plutella xylostella, and Helula sp. Treatment with Bacillus thuringiensis LC2 (B) resulted in reduction of plant damage by 61%.
Evaluation Tool of Land Suitability for Medicinal Plants Rahim, Supli Effendi; Supli, Ahmad Affandi; Damiri, Nurhayati; Zaman, Chairil; Husin, Husin
Sriwijaya Journal of Environment Vol 4, No 1 (2019): PLANT AND FORESTRY
Publisher : Program Pascasarjana Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22135/sje.2019.4.1.1

Abstract

Medicinal plants have been very important plants that are responsible in maintaining the health of millions of people in the world  since a very long time. Planting these crops must be carried out on a land that is suitable based on the results of a land suitability evaluation.  A framework to evaluate the land suitability for many land uses is initiated by Food and Agricultural Organization (FAO) in the late 1970’s. As the advent of smart phone nowadays becoming ubiquitous technology to solve problems in most settings, such as education, agriculture, medicine, psychology, and many others. This paper is to capitalize such advantage by converting the framework into a mobile app. This solution is hoped to help land users or planners to be more effective and efficient in evaluating their land. An algorithm is employed in the form the Rule Based System (RBS) in a way to construct the framework into bunch of rules that connect each other, resulting the conclusion of suitability. The rules itself are working on some variables, namely annual rainfall, altitude, drainage, soils’ type, pH, flood risk, fertility of the soils, soil solumn depth, etc. This study focuses on three medicinal crops only, which are candlenut, cardamom and onion to be evaluated. Data of agro climatic that were determining the suitability of the crops were developed into general and specific criteria for the plants. A usability model was studied from 40 respondents using the app. It is found that the usability of the app was in “very good” classification, with dimension scores, ranging from 3.79 and 4.22.
EFFECT OF TEMPERATURE AND STORAGE ON EFFECTIVENESS OF Trichoderma viride as BIOCONTROL AGENTS on Rigidoporus microporus, PATHOGEN of WHITE ROOT ON RUBBER Damiri, Nurhayati; Mulawarman, Mulawarman; Mutiara, Mitra
AGRIVITA, Journal of Agricultural Science Vol 36, No 2 (2014)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v36i2.379

Abstract

This research was aimed to study the effect of temperature and storage on effectiveness of Trichoderma viride to suppress Rigidoporus microporus development, the pathogen of white root disease on rubber.  This research applied a randomized complete block design with five treatments and five replications. Each treatment contained two rubber plants (total of plants 50).  There were five treatments i.e.: compost containing T.  viride which was stored at 17oC for a month ( A ),  compost containing T.  viride  which was  stored at 24oC  for a month ( B ),  compost containing T.  viride which was stored at 30oC for a month (C), Triadimefon ( D) and R. microporus  ( control Results showed that that T. viride compost which was stored for a month at various temperatures was able to suppress R.  microporus development. Trichoderma viride compost which was stored at of 17o C for a month showed the best result. It was was able to supress white root disease severity up to 70 percent and rhizomorph colonization up to 62 percent respectively.  The treatment was also able to increase the plant height and stem diameters. Keywords: effectiveness, Rigidoporus micro-porus, storage duration, temperature, Trichoderma viride