Effect of soil moisture on activity and dynamics of Rhizoctonia solani and Trichoderma harzianum

2007 ◽  
Vol 114 (3) ◽  
pp. 126-132 ◽  
Author(s):  
T. J. Paula ◽  
B. Hau
Keyword(s):  
Soil Moisture ◽  
Rhizoctonia Solani ◽  
Trichoderma Harzianum

scholarly journals Temperature, Moisture, and Seed Treatment Effects on Rhizoctonia solani Root Rot of Soybean

Plant Disease ◽  
2003 ◽  
Vol 87 (5) ◽  
pp. 533-538 ◽  
Author(s):  
A. E. Dorrance ◽  
M. D. Kleinhenz ◽  
S. A. McClure ◽  
N. T. Tuttle
Keyword(s):  
Soil Moisture ◽  
Rhizoctonia Solani ◽  
Root Rot ◽  
Seed Treatment ◽  
Anastomosis Group ◽  
Control Measures ◽  
Root Weight ◽  
Wide Range ◽  
Plant Stand ◽  
Growth Chamber Studies

The effects of temperature and soil moisture on infection and disease development by Rhizoctonia solani on soybean were studied individually. In addition, the anastomosis group of R. solani isolates recovered from soybean from 35 fields in 15 counties was determined. All of the 44 isolates recovered in this study were AG-2-2 IIIB. Five isolates of R. solani were able to infect and colonize soybean roots and hypocotyls at 20, 24, 28, and 32°C in growth chamber studies. The temperatures evaluated in this study were not limiting to the isolates tested. In greenhouse studies, nine R. solani isolates and a noninoculated control were evaluated at 25, 50, 75, and 100% soil moisture holding capacity (MHC). Root weights were greater and percent stand averages higher at 50 and 75% than at 25 or 100% MHC; however, as percentage of control, the main effect on percent moisture for percent stand, plant height, or root weight was not significant. There were significant differences among the isolates for the percent stand, root rot rating, and root fresh weight of soybean in each study. In both temperature and moisture studies, the R. solani isolates could be separated as predominantly causing (i) seed rot, as detected by greatly reduced plant stand; (ii) root rot generally having no effect on plant stand but a high root rot rating and low root weight; or (iii) hypocotyl lesions, having no effect on plant stand, a low root rot score, and a high number of red lesions on the hypocotyl. In the greenhouse seed treatment evaluations of five fungicides, there was no fungicide by isolate interaction using these pathogenic types of R. solani. None of the seed treatments evaluated in this study provided 100% control of the four isolates tested. Due to the wide range of environmental factors that permit R. solani infection and disease on soybeans, other control measures that last all season, such as host resistance, should be emphasized.

scholarly journals Modulation of Tomato Response to Rhizoctonia solani by Trichoderma harzianum and Its Secondary Metabolite Harzianic Acid

2018 ◽  
Vol 9 ◽  
Author(s):  
Gelsomina Manganiello ◽  
Adriana Sacco ◽  
Maria R. Ercolano ◽  
Francesco Vinale ◽  
Stefania Lanzuise ◽  
...  
Keyword(s):  
Rhizoctonia Solani ◽  
Secondary Metabolite ◽  
Trichoderma Harzianum

scholarly journals Effect of substrates to formulate Trichoderma harzianum based bio-fungicide in controlling seedling disease (Rhizoctonia solani) of brinjal

2017 ◽  
Vol 42 (1) ◽  
pp. 159-170 ◽  
Author(s):  
MI Faruk ◽  
ML Rahman
Keyword(s):  
Rhizoctonia Solani ◽  
Rice Bran ◽  
Wheat Bran ◽  
Trichoderma Harzianum ◽  
Agricultural Research ◽  
Root Weight ◽  
Agricultural Research Institute ◽  
Seedling Disease ◽  
House Condition ◽  
Shoot Weight

Efficacy of three different substrates viz., rice bran, wheat bran, grass pea bran and their combinations with mustard oilcake (MOC) were tested to formulate a suitable Trichoderma harzianum based bio-fungicide for controlling seedling disease of brinjal caused by Rhizoctonia solani in tray soil as well as in seedbed soil under net house condition of Bangladesh Agricultural Research Institute (BARI), Gazipur during 2010 to 2014. The results of three years experiments revealed that T. harzianum bio-fungicides formulated in five different combinations of substrates viz., (1) rice bran + wheat bran, (2) rice bran + mustard oilcake (MOC) (3) rice bran + grasspea bran, (4) rice bran + wheat bran + MOC and (5) rice bran + grasspea bran +MOC were equally effective to control the soil borne seedling disease of brinjal caused by Rhizoctonia solani in tray soil and seedbed condition. In addition, vegetative growth of brinjal seedlings viz., shoot length, shoot weight, root length and root weight were enhanced significantly by the T. harzianum bio-fungicides in R. solani inoculated seedbed condition.Bangladesh J. Agril. Res. 42(1): 159-170, March 2017

scholarly journals Utilisation d'une souche indigène de Trichoderma harzianum contre cinq agents pathogènes chez le concombre et la tomate de serre au Québec

2005 ◽  
Vol 83 (2) ◽  
pp. 73-87 ◽  
Author(s):  
J. Caron ◽  
L. Laverdière ◽  
P.O. Thibodeau ◽  
R.R. Bélanger
Keyword(s):  
Rhizoctonia Solani ◽  
Fusarium Oxysporum ◽  
Sclerotinia Sclerotiorum ◽  
Verticillium Dahliae ◽  
Trichoderma Harzianum ◽  
Pythium Ultimum

Le potentiel antagoniste du biofongicide à base de Trichoderma harzianum MAUL-20, isolé au Québec, a été testé contre cinq agents telluriques phytopathogènes(Fusarium oxysporum f. sp. radicis-lycopersici (FORL), Pythium ultimum, Rhizoctonia solani, Sclerotinia sclerotiorum et Verticillium dahliae) du concombre et de la tomate de serre. Le biofongicide a démontré une efficacité contre P. ultimum et R. solani chez le concombre et la tomate et contre FORL chez la tomate. De plus, T. harzianum MAUL-20 a eu un effet stimulant sur le développement des plants de concombre lorsque cultivés, sans agents pathogènes, dans un substrat organique alimenté du biofongicide. L'efficacité de T. harzianum MAUL-20 a été comparée à celle du biofongicide américain Rootshield™ (Trichoderma harzianum KRL-AG2) et le premier a démontré une activité antagoniste égale ou supérieure à celle de Rootshield™.

scholarly journals Mycoparasitism studies of Trichoderma harzianum strains against Rhizoctonia solani: evaluation of coiling and hydrolytic enzyme production

2007 ◽  
Vol 29 (8) ◽  
pp. 1189-1193 ◽  
Author(s):  
Fausto Bruno dos Reis Almeida ◽  
Fernanda Menezes Cerqueira ◽  
Roberto do Nascimento Silva ◽  
Cirano José Ulhoa ◽  
Adilson Lopes Lima
Keyword(s):  
Rhizoctonia Solani ◽  
Trichoderma Harzianum ◽  
Enzyme Production ◽  
Hydrolytic Enzyme
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