By P. Narayanasamy
Biological administration of illnesses of plants is stimulated by way of the character of interactions among the pathogens and different organisms and the crops. because of improvement of resistance in pathogens to fungicides and bactericides, decision of compatibility of biotic biocontrol brokers with chemical compounds is vital for choosing traces of biocontrol brokers (BCAs) displaying resistance to chemical compounds to successfully limit use of the chemical compounds. Microbial plant pathogens and the antagonists found in the soil and at the plant surfaces are encouraged via numerous cultural practices. it truly is attainable to minimize ailment prevalence and depth via crop sanitation and utilizing acceptable rotational vegetation. software of actual strategies regarding using warmth, solarization and irradiation has strength to lessen the pathogen inhabitants or weaken the possibility of pathogens found in the seed, planting fabrics and soil.
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Additional resources for Biological Management of Diseases of Crops: Volume 2: Integration of Biological Control Strategies with Crop Disease Management Systems
Antagonism of mycorrhizal fungi to root pathogenic fungi and soil bacteria. Phytopathology 59:153–163 Millard WA, Taylor CB (1927) Antagonism of microorganisms as the controlling factor in the inhibition of scab by green manuring. Ann Appl Biol 14:202–216 Shipton PJ, Cook RJ, Sitton JW (1973) Occurrence and transfer of a biological factor in soil that suppresses take-all of wheat in eastern Washington. Phytopathology 63:511–517 Weindling R, Fawcett HS (1936) Experiments in the control of the rhizoctonia damping-off of citrus seedlings.
Maize dwarf mosaic virus, Wheat streak mosaic virus, Rice tungro-associated viruses and Rice yellow dwarf phytoplasma may be transmitted from regenerated growth from stubbles left in the field (Narayanasamy 2002). Polyethylene mulch alters the environmental conditions in the soil and also alters the environmental conditions above the mulch. The actual effects and their magnitude depend on the characteristics of the polyethylene sheet used and how the covering of the soil is carried out (attached to the soil or not).
Application of superphosphate increased the growth of forest trees and reduced root rot infection by Phytophthora cinnamomi. This effect was presumed to be due to removal of excessive soil moisture (Nework 1970). Since phosphates are applied to correct the deficiency of this nutrient in the soil, determination of their effect on disease development was not done as the primary aim of the investigation. Hence, the available information is scanty and inadequate to draw any reliable conclusion for the management of plant diseases.