Published in Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 1
Written by Gheorghe MATEI, Valentin Nicolae VLĂDUȚ, Otilia COTUNA, Veronica SĂRĂȚEANU, Marius PARASCHIVU, Lorena Diana POPA
Due to climate change and human activity, biotic constrainers are anticipated to expand to regions where they were previously irrelevant. This will present new management challenges for crops, particularly in cropping systems dependent on minor cereals diversification. In Central and Eastern Europe, Secale cereale is a minor cereal that contributes to the diversity of crop species, particularly in marginal areas where wheat cultivation is unfavourable. During 2020-2021, using different chemical and biological pesticide formulations, a plant-pest-pathogen interaction profile was observed on Suceveana rye genotype in a randomized complete block design with three replications in dry area from South of Romania. The best protection against leaf rust (Puccinia recondita f. sp. secalis) was provided by Poliversum (Pythium oligandrum M1, 1×10.000.000 oospors/g product) for the 1st assessment - attack degree = 0.65% and for the 2nd assessment - attack degree = 1.42%, while against pests was provided by Bioinsekt and deltametrin (0.75 ml/ha). Negative and significant correlation of leaf rust attack with grain yield (r =-0.8561***) and pests attack with grain yield (r =-0.8631***) were found during 2020-2021 cropping season.
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