brown leaf spot (uncountable)
- Any of various plant diseases that cause brown spots on leaves.
1917, H. Drew, Bulletin - Issues 140-175, page 145:BROWN LEAF SPOT Cercospora fusca Rand The brown leaf spot of the pecan is found generally distributed thruout the pecan-growing area.
1993, Clarence I. Kado, Jorge H. Crosa, Molecular Mechanisms of Bacterial Virulence, →ISBN, page 605:IAA biosynthesis by Pseudomonas syringae pv. syringae, the causal agent of brown leaf spot disease of bean, is produced via the indoleacetamide pathway, similar to the pathway in P.s. pv. savastanoi.
2009, Samuel S. Gnanamanickam, Biological Control of Rice Diseases, →ISBN, page 35:Foliar fungicides are not economical for controlling brown leaf spot on most commercial long grain varieties.
2010, K. G. Mukerji, C. Manoharachary, Taxonomy and Ecology of Indian Fungi, →ISBN, page 223:The most economically important fungal diseases in India are blast, sheath blight, brown leaf spot, foot rot, stem rot, sheath rot, false smut, kernel smut /bunt, leaf smut, narrow brown leaf spot and udbatta disease.
2013, P. Narayanasamy, Biological Management of Diseases of Crops, →ISBN, page 583:The potential of acibenzolar-S-methyl (ASM), when applied alone or in combination with fungicides or antibiotics was assessed for the control of coffee rust (Hemileia vastatrix) and brown leaf spot (Phoma costarricencis) under field conditions and also for the control of brown eye spot (Cercospora cofffeicola) and bacerial blight (Pseudomonas syringae pv. garcae) on coffee seedlings.
