Management of maize stand height using growth regulators

Tomáš Spitzer, Petr Míša, Jan Bílovský and Jan Kazda
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Tomáš Spitzer: Agrotest fyto, s.r.o., Kromeriz, Czech Republic; 2Department of Plant Protection
Petr Míša: Agrotest fyto, s.r.o., Kromeriz, Czech Republic; 2Department of Plant Protection
Jan Bílovský: Agrotest fyto, s.r.o., Kromeriz, Czech Republic; 2Department of Plant Protection
Jan Kazda: Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic

Plant Protection Science, 2015, vol. 51, issue 4, 223-230

Abstract: Effect in reducing maize plant height using growth regulators ethephon, chlormequat chloride (CCC), CCC + ethephon, and mepiquat chloride + prohexadione-Ca was studied in field experiments during 2010 and 2011. It was found that maize plant height could be reduced by as much as 125 cm (49% of control) using a double application of ethephon (576 g a.i./ha) at growth stages BBCH 18-19 and BBCH 34-36. The other growth regulators displayed weak or no influence. An optimum level of shortening was achieved using ethephon (576 g a.i./ha) at BBCH 34-36 (reducing plant height by 40-90 cm), but it is necessary to count upon yield loss of 0.5-0.6 t/ha.

Keywords: chlormequat chloride (CCC); ethephon; mepiquat chloride; prohexadione-Ca; grain yield (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:51:y:2015:i:4:id:105-2014-pps

DOI: 10.17221/105/2014-PPS

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