Induction of resistance and biocontrol of rhizoctonia in cotton against damping-off disease by rhizosphere microorganisms.

2007 ◽  
Vol 17 (1) ◽  
Author(s):  
A A El-Mehalawy ◽  
S M Hassanin ◽  
N M Hassanin ◽  
S A Zaki
Keyword(s):  
Damping Off ◽  
Rhizosphere Microorganisms ◽  
Induction Of Resistance

scholarly journals Induction of Resistance against Soybean Damping-off caused by Rhizoctonia solani

2014 ◽  
Vol 42 (2) ◽  
pp. 137-158
Author(s):  
Marwa Atwa ◽  
Shehata Shehata ◽  
Mohamed Rahhal
Keyword(s):  
Rhizoctonia Solani ◽  
Damping Off ◽  
Induction Of Resistance

scholarly journals Nonpathogenic Binucleate Rhizoctonia spp. and Benzothiadiazole Protect Cotton Seedlings Against Rhizoctonia Damping-Off and Alternaria Leaf Spot in Cotton

2005 ◽  
Vol 95 (9) ◽  
pp. 1030-1036 ◽  
Author(s):  
Suha Jabaji-Hare ◽  
Stephen M. Neate
Keyword(s):  
Disease Control ◽  
Leaf Spot ◽  
Root Rot ◽  
Virulent Strain ◽  
Systemic Resistance ◽  
Damping Off ◽  
Binucleate Rhizoctonia ◽  
Rhizoctonia Root Rot ◽  
Seedling Rot ◽  
Induction Of Resistance

Recent reports have shown induction of resistance to Rhizoctonia root rot using nonpathogenic strains of binucleate Rhizoctonia spp. (np-BNR). This study evaluates the biocontrol ability of several np-BNR isolates against root and foliar diseases of cotton in greenhouse trials, provides evidence for induced systemic resistance (ISR) as a mechanism in this biocontrol, and compares the disease control provided by np-BNR with that provided by the chemical inducer benzothiadiazole (BTH). Pretreatment of cotton seedlings with np-BNR isolates provided good protection against pre- and post-emergence damping-off caused by a virulent strain of Rhizoctonia solani (AG-4). Seedling stand of protected cotton was significantly higher (P < 0.05) than that of nonprotected seedlings. Several np-BNR isolates significantly reduced disease severity. The combination of BTH and np-BNR provided significant protection against seedling rot and leaf spot in cotton; however, the degree of disease reduction was comparable to that obtained with np-BNR treatment alone. Significant reduction in leaf spot symptoms caused by Alternaria macrospora occurred on cotyledons pretreated with np-BNR or sprayed with BTH, and the np- BNR-treated seedlings had significantly less leaf spot than BTH-treated seedlings. The results demonstrate that np-BNR isolates can protect cotton from infections caused by both root and leaf pathogens and that disease control was superior to that observed with a chemical inducer.

Induction of resistance to endothelin-1's biochemical actions by elevated glucose levels in retinal pericytes

Diabetes ◽  
1992 ◽  
Vol 41 (12) ◽  
pp. 1533-1539 ◽  
Author(s):  
G. de la Rubia ◽  
F. J. Oliver ◽  
T. Inoguchi ◽  
G. L. King
Keyword(s):  
Endothelin 1 ◽  
Glucose Levels ◽  
Retinal Pericytes ◽  
Elevated Glucose ◽  
Induction Of Resistance

Damping-off of sugar beet in Finland: II. Disease control 

1983 ◽  
Vol 55 (5) ◽  
pp. 431-450
Author(s):  
Mauritz Vestberg ◽  
Risto Tahvonen ◽  
Kyösti Raininko
Keyword(s):  
Sugar Beet ◽  
Disease Control ◽  
Field Experiments ◽  
Damping Off ◽  
Good Protection ◽  
Great Damage

In pot and field experiments carried out in 1979-1981, the systemic funqicide hymexazol prevented satisfactorily soil borne damping-off of sugar beet caused mainly by the fungus Pythium debaryanum auct. non Hesse. The results with the combination hymexazol + thiram were still better. This treatment gave very good protection against the disease up to about two to three weeks after emergence, increased the yield on the average by 5-10 % and produced considerably thicker and denser stands. Thereafter a large number of beets may have become infected, but no great damage was caused as only few died. Band spraying at emergence using hymexazol with a large amount of water as well as spraying into the seed furrow prevented the outbreak of the disease almost completely. Liming had little effect on damping-off.

МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ ДИНАМИКИ МИНЕРАЛЬНОГО ПИТАНИЯ РАСТЕНИЙ В СИСТЕМЕ «УДОБРЕНИЕ-ПОЧВА-РАСТЕНИЕ»

2020 ◽  
Vol 65 (6) ◽  
pp. 1219-1229
Author(s):  
В.А. Четырбоцкий ◽  
◽  
А.Н. Четырбоцкий ◽  
Б.В. Левин ◽  
◽  
...  
Keyword(s):  
Experimental Data ◽  
Temporal Dynamics ◽  
Plant Biomass ◽  
Environmental Parameters ◽  
Parametric Identification ◽  
Agricultural Crop ◽  
Parameter System ◽  
Plant Nitrogen ◽  
Rhizosphere Microorganisms ◽  
Nitrogen Phosphorus

A numerical simulation of the spatial-temporal dynamics of a multi-parameter system is developed. The components of this system are plant biomass, mobile and stationary forms of mineral nutrition elements, rhizosphere microorganisms and environmental parameters (temperature, humidity, acidity). Parametric identification and verification of the adequacy of the model were carried out based on the experimental data on the growth of spring wheat «Krasnoufimskaya-100» on peat lowland soil. The results are represented by temporal distributions of biomass from agricultural crop under study and the findings on the content of main nutrition elements within the plant (nitrogen, phosphorus, potassium). An agronomic assessment and interpretation of the obtained results are given.

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