Assessment of peculiarities of weed formation in oilseed radish agrophytocoenosis using different technological models

ABSTRACT There is limited information about the critical period for weed control (CPWC) in oilseed radish (Raphanus sativus L. var. oleiformis Pers.) This significantly limits the effectiveness of the applied technologies in its cultivation. The article focuses on the results of a long-term study (2...

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Autor principal:	Tsytsiura,Yaroslav
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2020
Materias:	Critical weed control period oilseed radish oilseed radish-weed competition weed control weeds
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000400661
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spelling	oai:scielo:S0718-583920200004006612020-11-22Assessment of peculiarities of weed formation in oilseed radish agrophytocoenosis using different technological modelsTsytsiura,Yaroslav Critical weed control period oilseed radish oilseed radish-weed competition weed control weeds ABSTRACT There is limited information about the critical period for weed control (CPWC) in oilseed radish (Raphanus sativus L. var. oleiformis Pers.) This significantly limits the effectiveness of the applied technologies in its cultivation. The article focuses on the results of a long-term study (2013 to 2018) of the peculiarities of weed formation in oilseed radish agrophytocoenosis using different sowing technological models according to seeding rate and row spacing parameters. The study included the peculiarities of the species and generic composition of weeds and the basic attributes of the formation of species-specific amounts. The summed dominance ratio (SDR) was heterogeneous and co-oscillatory in the weed structure for both the formation of the number of individual species and their height dominance, which depended on the phenological stage of growth and crop development. In the general spectrum, the prevailing weed forms were identified with the highest potential for oilseed radish plants with an SDR greater than 1.0, which belong to groups I and VI according to environmental plasticity and stability, given the different conditions of the study period for both hydrothermal conditions and year index. In conclusion, a critical period for weed control (CPWC) in oilseed radish agrocoenosis was defined as a 5% reduction in crops ranging from 5 to 45 d after sprouting (DAS) for row sowing and a seeding rate of 4.0 million similar seeds ha-1 and 6 to 60 DAS for a variant of wide row sowing at a seeding rate of 0.5 million similar seeds ha-1.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.80 n.4 20202020-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000400661en10.4067/S0718-58392020000400661
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Critical weed control period oilseed radish oilseed radish-weed competition weed control weeds
spellingShingle	Critical weed control period oilseed radish oilseed radish-weed competition weed control weeds Tsytsiura,Yaroslav Assessment of peculiarities of weed formation in oilseed radish agrophytocoenosis using different technological models
description	ABSTRACT There is limited information about the critical period for weed control (CPWC) in oilseed radish (Raphanus sativus L. var. oleiformis Pers.) This significantly limits the effectiveness of the applied technologies in its cultivation. The article focuses on the results of a long-term study (2013 to 2018) of the peculiarities of weed formation in oilseed radish agrophytocoenosis using different sowing technological models according to seeding rate and row spacing parameters. The study included the peculiarities of the species and generic composition of weeds and the basic attributes of the formation of species-specific amounts. The summed dominance ratio (SDR) was heterogeneous and co-oscillatory in the weed structure for both the formation of the number of individual species and their height dominance, which depended on the phenological stage of growth and crop development. In the general spectrum, the prevailing weed forms were identified with the highest potential for oilseed radish plants with an SDR greater than 1.0, which belong to groups I and VI according to environmental plasticity and stability, given the different conditions of the study period for both hydrothermal conditions and year index. In conclusion, a critical period for weed control (CPWC) in oilseed radish agrocoenosis was defined as a 5% reduction in crops ranging from 5 to 45 d after sprouting (DAS) for row sowing and a seeding rate of 4.0 million similar seeds ha-1 and 6 to 60 DAS for a variant of wide row sowing at a seeding rate of 0.5 million similar seeds ha-1.
author	Tsytsiura,Yaroslav
author_facet	Tsytsiura,Yaroslav
author_sort	Tsytsiura,Yaroslav
title	Assessment of peculiarities of weed formation in oilseed radish agrophytocoenosis using different technological models
title_short	Assessment of peculiarities of weed formation in oilseed radish agrophytocoenosis using different technological models
title_full	Assessment of peculiarities of weed formation in oilseed radish agrophytocoenosis using different technological models
title_fullStr	Assessment of peculiarities of weed formation in oilseed radish agrophytocoenosis using different technological models
title_full_unstemmed	Assessment of peculiarities of weed formation in oilseed radish agrophytocoenosis using different technological models
title_sort	assessment of peculiarities of weed formation in oilseed radish agrophytocoenosis using different technological models
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000400661
work_keys_str_mv	AT tsytsiurayaroslav assessmentofpeculiaritiesofweedformationinoilseedradishagrophytocoenosisusingdifferenttechnologicalmodels
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Assessment of peculiarities of weed formation in oilseed radish agrophytocoenosis using different technological models

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