Journal article

Publication year: 2003

Pages: 379-384

Journal: Journal of Plant Nutrition and Soil Science

Volume number: 166

Issue number: 3

ISSN: 1436-8730

DOI Link: https://doi.org/10.1002/jpln.200390058

Publisher: Wiley-VCH Verlag

Abstract: 
Chemically induced resistance is a promising method of plant protection against diseases, which can be triggered by systemically acting chemical inducers such as BTH (benzo(1,2,3)thiadiazole-carbothioic-acid-S-methylester). BTH is commercially distributed as a 50% formulation, called Bion(R). The uncertain success of Bion(R) application in controlling infection by powdery mildew is a major obstacle in using induced resistance for plant protection in agriculture. This study aimed to investigate the effect of soil properties, selected macronutrients (N, P, and K), and addition of organic matter on induced resistance and to identify possible factors responsible for the high variability of BTH effect under field conditions. A pot experiment under open-air conditions was set up using the pathosystem Hordeum, vulgare cv. Ingrid / Blumeria graminis f. sp. hordei race A6. The different soils strongly affected the resistance of barley plants against powdery mildew after BTH treatment. The infection of barley by powdery mildew was lower than on all other soils when grown on an acid forest soil which was limed up to pH 4.9, even after BTH treatment. A reproducible induction of pathogen resistance by BTH was shown only on a mineral soil (Kleinlinden) with a negligible C content. Application of N, P, and K did not consistently affect the induction of resistance by BTH. The addition of green manure and compost led to an enhanced variability of resistance induction on the soil "Kleinlinden". Possible effects of soil microflora on resistance induction are discussed.

Harvard Citation style: Wiese, J., Bagy, M. and Schubert, S. (2003) Soil properties, but not plant nutrients (N, P, K) interact with chemically induced resistance against powdery mildew in barley, Journal of Plant Nutrition and Soil Science = Zeitschrift für Pflanzenernährung und Bodenkunde, 166(3), pp. 379-384. https://doi.org/10.1002/jpln.200390058

APA Citation style: Wiese, J., Bagy, M., & Schubert, S. (2003). Soil properties, but not plant nutrients (N, P, K) interact with chemically induced resistance against powdery mildew in barley. Journal of Plant Nutrition and Soil Science = Zeitschrift für Pflanzenernährung und Bodenkunde. 166(3), 379-384. https://doi.org/10.1002/jpln.200390058