Fecha/hora: 13/06/2024 00:37:36

Biblioteca(s): | INIA La Estanzuela.
Fecha corriente: | 31/08/2022
Fecha de la última actualización: | 30/11/2022
Autoria: | VEROCAI, M.; CASTRO, M.; MANASLISKI, S.; MAZZILLI, S.R.
Afiliación: | MAXIMILIANO VEROCAI, Facultad de Agronomía, Estación Experimental Mario Alberto Cassinoni, Univ. de la República, Ruta 3, km 363, Paysandú, 60000 Uruguay.; MARINA CASTRO DERENYI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SANTIAGO MANASLISKI, Manuel Stirling 3186, Young, Río Negro, CP 65100 Uruguay.; SEBASTIÁN R. MAZZILLI, Facultad de Agronomía, Estación Experimental Mario Alberto Cassinoni, Univ. de la República, Ruta 3, km 363, Paysandú, 60000 Uruguay.
Título: | Frost risk in canola and carinata as a function of sowing date in the agricultural central region of South America.
Año de publicación: | 2022
Fuente/Imprenta: | Agronomy Journal,2022, volume 114, issue 5, pages 2920-2935. doi: https://doi.org/10.1002/agj2.21154
ISSN: | 0002-1962
DOI: | doi.org/10.1002/agj2.21154
Idioma: | Inglés
Notas: | Article history: Received: 23 August 2021/ Accepted: 10 June 2022. -- Corresponding author: Mazzilli, S.R.; Facultad de Agronomía, Estación Experimental Mario Alberto Cassinoni, Univ. de la República, Ruta 3, km 363, Paysandú, Uruguay; email:smazzilli@fagro.edu.uy --
Contenido: | Abstract: Crop cycles in spring canola (Brassica napus L.) and carinata (Brassica carinata A. Braun) are controlled by temperature and photoperiod. In the central region of South America, which accounts for 90% of South American rapeseed crop production, farmers seek to sow as early as possible to maximize yield even though early sowing dates expose crops to a higher probability of frost occurrence that had not been quantified before. Our objective was to model phenology for one spring cultivar of canola (?Rivette?) and one of carinata (?Avanza 641?) and assess the probability of frost occurrence during flowering and grain filling in the central region of South America. For the estimation of frost risk, we modeled phenology resulting from 15 April to 15 August sowing dates at 12 locations (from 31.16&#730; to 34.20&#730; S latitude). We assumed that the critical period spans from 100 to 500 growing degree days (GDD) after flowering. Under early sowing dates, carinata tends to have a longer cycle (200 GDD more than canola) although both crops had a similar cycle lengthunder a late sowing date. Predicted and observed flowering dates showed an average difference of 1.6 and 0.95 d for canola and carinata, respectively. Carinata has a lower probability of suffering frost events, and early sowing dates result in a greater exposure to frost damage. The results of this work will enable farmers and stakeholders to know the potential frost risk when defining a sowing date for canola and carinata. © 2022 The Authors. Agronomy Journal © 2022 American Society of Agronomy.
Palabras-Clave: | BRASSICA CARINATA A.BRAUN; RAPESEED CROPS.
Thesagro: | BRASSICA NAPUS; CANOLA; COLZA.
Categoría del tema: | F01 Cultivo
Registro original: | INIA La Estanzuela (LE)
Ejemplares: | LE - (103623-1) - PXI - AP - DD - PP/Agronomy Journal/2022 -  -  - DIS