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Effects of disease and plant competition on yield in monocultures and mixtures of two wheat cultivars
Author(s) -
ALEXANDER HELEN MILLER,
ROELFS A. P.,
COBBS GARY
Publication year - 1986
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1986.tb02043.x
Subject(s) - cultivar , monoculture , biology , rust (programming language) , agronomy , fungicide , inoculation , yield (engineering) , competition (biology) , puccinia , crop , horticulture , mildew , ecology , materials science , computer science , metallurgy , programming language
Disease seventy and crop yield were compared in monocultures and mixtures of two wheat cultivars. one susceptible and one resistant to Puccinia graminis f. sp. tritici. Part of each plot was inoculated and part treated with fungicide. Rust seventy was inversely related to the proportion of resistant plants present. Weight of grain in 100 heads of the susceptible cultivar increased as the amount of rust decreased. The susceptible cultivar yielded less than the resistant cultivar in monoculture, but was a stronger competitor in mixtures. Competitive abilities of the cultivars were independent of severity of rust in the mixtures studied.