Activity of etephon, trinexapac ethyl and chlorocholine chloride depending on application method in cultivars of winter rye
Kinga Matysiak
sekretariat@iorpib.poznan.plInstytut Ochrony Roślin, Zakład Herbologii i Techniki Ochrony Roślin (Poland)
Tomasz Sekutkowski
Instytut Uprawy Nawożenia i Gleboznawstwa (Poland)
Sylwia Kaczmarek
Instytut Ochrony Roślin, Zakład Herbologii i Techniki Ochrony Roślin (Poland)
Abstract
Etephon, chlorocholine chloride and trinexapac-ethyl are plant growth regulators commonly used in cereals. Besides stem elongation inhibition and lodging prevention they strongly affect many processes of plant growth and development. Scientific literature confirms that they influence the photosynthesis through enhancing of chlorophyll content in plant leaves. Under favorable conditions they can enhance weight of 1000 grains, number of grain per ear and yield, even in the absence of lodging. Activity of plant growth regulators is strongly connected with weather conditions during a vegetation season. The aim of experiments was to evaluate the influence of trinexapac-ethyl, chlorocholine chloride and etephon on diploid (traditional) and hybrid winter rye. The plant growth regulators were used in two variants: mixtures trinexapac-ethyl + chlorocholine chloride or trinexapac-ethyl + etephon. The second variant of application was trinexapac-ethyl in a growth stage BBCH 31 and chlorocholine chloride in BBCH 37 or trinexapac-ethyl in BBCH 31 and etephon in a growth stage BBCH 37. Field trials were conducted in the years 2008–2010 in Plant Protection Institute in Poland. The experimental design was a randomized complete block containing four replications. In field trial the following parameters were estimated: plant height, chlorophyll content, lodging, weight of 1000 grains, number of grains per ear, yield, grain density, starch content, protein content and grain humidity. Results show different response of two cultivars of winter rye to the applied plant growth regulators.
Keywords:
chlorophyll, hybrid winter rye, lodging, plant growth regulators, plant height, traditional winter ryeReferences
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Authors
Kinga Matysiaksekretariat@iorpib.poznan.pl
Instytut Ochrony Roślin, Zakład Herbologii i Techniki Ochrony Roślin Poland
Authors
Tomasz SekutkowskiInstytut Uprawy Nawożenia i Gleboznawstwa Poland
Authors
Sylwia KaczmarekInstytut Ochrony Roślin, Zakład Herbologii i Techniki Ochrony Roślin Poland
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