Field application of selected bacterial strains and their combinations for controlling onion and garlic white rot disease caused by Stromatinia cepivora

The corelations between White Rot (Rigidoporus lignosus L.) incidence and soil characters of rubber ecosystem in Penumangan Baru, Lampung. A study was conducted to evaluate the corelation between soil characters and white rot incidence. The study was done in Penumangan Lampung from June 2007 to July 2008. Seven sites were observed on the incidence of white rot of indicator plants (cassava). Physical, chemical, and biological soil characters were correlated and regressed with white rot incidence. The results showed that there were correlation between white rot incidence and soil characters such as pH KCl, number of fungal genus (fungal diversity), Ca+, total cation, CEC, and saturation base. Ion Ca+, total cation, saturation base correlated positively with white rot incidence, on the contrary, fungal diversity, cation exchange capacity, and pH KCl correlated negatively with white rot incidence. Thus, efforts to increase fungal diversity, cation exchange capacity, and pH (in acidic soil) could be used as basic strategies to develope intergrated control of white rot disease.

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PENGARUH KONSORSIUM AGENS HAYATI DAN JARAK TANAM TERHADAP KEJADIAN PENYAKIT BUSUK PUTIH (Sclerotium cepivorum Berk.) PADA BAWANG DAUN Influence of The Consortium of Biological Agents and Spacing to White Rot Disease (Sclerotium cepivorum Berk.) of Scallio

AgriPeat ◽

10.36873/agp.v20i02.144 ◽

2019 ◽

Vol 20 (02) ◽

pp. 92-98

Author(s):

Admin Journal

Keyword(s):

Block Design ◽

Peat Soil ◽

Nutrient Content ◽

Biological Agents ◽

White Rot ◽

Plant Weight ◽

Sclerotium Cepivorum ◽

Trichoderma Sp ◽

Rot Disease ◽

Aspergillus Sp

ABSTRACTThis study aims to determine effective management patterns to control Sclerotium rot and to improvepeat soil fertility with the application of the Trichoderma sp + Aspergillus sp consortium.as biologicalagents and P solvents, combined with spacing arrangements in the cultivation of scallion in peatlands.The study used a factorial randomized block design consisting of two factors with four replications.Factor I Application of biological agents consists of: A0 = No biological agents; A1 = Consortium ofTrichoderma sp. + Aspergillus sp; Factor II Plant spacing, consisting of J1 = 20x25 cm; J2 = 25x25cm and J3 = 30x25 cm. The results showed that the interaction treatment of Trichoderma sp. +Aspergillus sp. and spacing of 25x25 cm effectively suppresses the incidence of white rot disease(Sclerotium cepivorum Berk) up to 34.02%, while at a spacing of 20x25 cm with the application ofTrichoderma sp. + Aspergillus sp. produced the highest fresh plant weight of 8.80 kg plot-1 or 24.44tons hectares-1. Increasing the number of leaves is only influenced by a single factor of biologicalagents (23.29%) and spacing of 25x25 cm (19.7%). Application of Trichoderma sp. + Aspergillus sp.can increase the nutrient content of N, P (total and available), K and peat soil organic matter.Consortium of biological agents Trichoderma sp. and Aspergillus sp. indigenous have the potential tobe developed as biological agents and biofertilizers, with optimum spacing can be applied to themanagement of scallion cultivation in peatlands.Key words: Sclerotium cepivorum Berk, scallion, Trichoderma sp. and Aspergillus sp., spacing

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The effect of seed and stem-base treatments with thiophanate-methyl on the control of white rot disease (Sclerotium cepivorum) of autumn-sown salad onions

Plant Pathology ◽

10.1111/j.1365-3059.1980.tb01205.x ◽

1980 ◽

Vol 29 (4) ◽

pp. 153-158 ◽

Cited By ~ 1

Author(s):

A. R. ENTWISTLE ◽

H. L. MUNASINGHE

Keyword(s):

White Rot ◽

Thiophanate Methyl ◽

Stem Base ◽

Sclerotium Cepivorum ◽

Rot Disease

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Evaluation of yeast-like fungi to protect Virginia mallow (Sida hermaphrodita) against Sclerotinia sclerotiorum

Canadian Journal of Plant Science ◽

10.1139/cjps-2015-0230 ◽

2016 ◽

Vol 96 (2) ◽

pp. 243-251 ◽

Cited By ~ 6

Author(s):

Dorota Remlein-Starosta ◽

Joanna Krzymińska ◽

Jolanta Kowalska ◽

Jan Bocianowski

Keyword(s):

Sclerotinia Sclerotiorum ◽

Extracellular Enzymes ◽

Control Strategies ◽

Antagonistic Activity ◽

Pichia Anomala ◽

White Rot ◽

Different Temperatures ◽

Antagonistic Yeast ◽

Antagonistic Potential ◽

Rot Disease

Virginia mallow is a plant from the central and eastern states of North America. A large amount of high quality biomass obtained from V. mallow led to interest in this plant for bioenergy purposes. Unfortunately, high incidence of white rot disease caused by Sclerotinia sclerotiorum destroyed plantations of this plant. In previous attempts, various control strategies were not successful and all treatments failed (including the use of Coniothurium minitans). The aim of the study was to find and evaluate yeast-like fungi for biocontrol of S. sclerotiorum, evaluate the optimal thermal condition for biocontrol efficacy, and describe possible modes of action of potential biocontrol organisms. In dual bioassay test with 19 strains of yeast-like fungi with S. sclerotiorum, antagonistic potential were obtained. At different temperatures variations in antagonistic activity of yeast-like fungi were observed. At all tested temperatures (i.e., 4, 12, and 23°C), positive results were obtained. Extracellular enzymes were produced by the majority of antagonistic yeast, such as: amylases (the most frequent), chitinases, proteases, pectinases and xylanases. In this research, reduction in white rot symptoms on V. mallow stems was significant (P < 0.05). The highest inhibition of disease was observed after treatment with strains (114/64) Candida albidus and (117/10) Pichia anomala.

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