Effects of Agronomic Management and Climate on Leaf Phenolic Profiles, Disease Severity, and Grain Yield in Organic and Conventional Wheat Production Systems

0508500 - BÚ 2020 RIV US eng J - Journal Article
Rempelos, L. - Almuayrifi, A. M. - Baranski, M. - Tetard-Jones, C. - Eyre, M. - Shotton, P. - Cakmak, I. - Ozturk, L. - Cooper, J. - Volakakis, N. - Schmidt, Christoph Stephan - Sufar, E. - Wang, J. - Wilkinson, A. - Rosa, E. A. S. - Zhao, B. - Rose, T. J. - Leifert, C. - Bilsborrow, P.
Effects of Agronomic Management and Climate on Leaf Phenolic Profiles, Disease Severity, and Grain Yield in Organic and Conventional Wheat Production Systems.
Journal of Agricultural and Food Chemistry. Roč. 66, č. 40 (2018), s. 10369-10379. ISSN 0021-8561. E-ISSN 1520-5118
Institutional support: RVO:67985939
Keywords : wheat * organic agriculture * powdery mildew
OECD category: Ecology
Impact factor: 3.571, year: 2018
Method of publishing: Limited access

Agricultural intensification over the last 40 years has increased cereal yields, but there is very limited information on the effects of intensification practices (e.g., nondiverse rotations, mineral NPK fertilizer, and pesticides) on crop health and quality. Results from the study reported here suggest that the use of mineral NPK fertilizers reduces phenolic acid and flavonoid concentrations in leaves and increases the susceptibility of wheat to lodging and powdery mildew, when compared to composted FYM inputs. In contrast, the use of herbicides, fungicides, and growth regulators reduces lodging and foliar disease severity but had no effect on phenolic acid and flavonoid concentrations. The use of composted FYM inputs also resulted in a significant grain yield reduction and not substantially reduced the severity of opportunistic pathogens such as Septoria, which remain a major yield limiting factor unless fungicides are used and/or more Septoria resistant varieties become available.
Permanent Link: http://hdl.handle.net/11104/0299390