MODELLING MANAGEMENT STRATEGIES TO MITIGATE THE EFFECTS OF ALTERATIONS OF TEMPERATURE AND OF CO2 CONCENTRATION ON MAIZE

Autor:	Antonio José Steidle Neto, Isabel Regina Prazeres De Souza, Tales Antônio Amaral, Camilo de Lelis Teixeira de Andrade, B. G. Magalhaes, Daniela de Carvalho Lopes
Přispěvatelé:	CAMILO DE LELIS TEIXEIRA DE ANDRADE, CNPMS, BRUNA GOMES MAGALHÃES, DANIELA DE CARVALHO LOPES, Daniela de Carvalho Lopes, ANTONIO JOSÉ STEIDLE NETO, Universidade Federal de São João del-Rei, ISABEL REGINA PRAZERES DE SOUZA, CNPMS, TALES ANTÔNIO AMARAL.
Rok vydání:	2021
Předmět:	Root depth Crop residue Palhada Global warming Climate change General Medicine Root system Simulation models Profundidade de raiz Milho Agronomy Yield (wine) Co2 concentration Mulching Environmental science Soil horizon Cultivar Zea Mays DSSAT Mulch Aquecimento global Modelo de Simulação
Zdroj:	Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA
ISSN:	1980-6477 1676-689X
DOI:	10.18512/rbms2021v20e1210
Popis:	Ongoing climate change may affect rainfed maize yield in Brazil, which can be attenuated by some crop management strategies. This work aimed to evaluate, by using computational modeling, management practices with potential to mitigate the effects of changes in temperature and CO2 concentration on maize yield. The CSM-CERES-Maize model was applied to simulate the mitigating potential of using maize cultivars with 0.3 m, 0.5 m and 0.7 m deep root system, associated with 0 t ha-1, 2 t ha-1 and 4 t ha-1 of crop residue left on the soil surface. A set of 33 years of daily weather data, along with soil profile data, were used to evaluate the approach in 10 regions of the state of Minas Gerais, Brazil. For most of the regions, the use of mulching and of a maize cultivar with deeper root system was not capable of attenuating the temperature rise. In contrast, any factor limiting root growth of maize to a depth of 0.30 m, causes significant yield drop, even for a scenario of reducing temperature by 3 oC or rising CO2 concentration. In warmer and drier regions, the positive response of maize to the increase in CO2 concentration was more pronounced. Made available in DSpace on 2021-07-22T15:00:25Z (GMT). No. of bitstreams: 1 Modelling-management.pdf: 718776 bytes, checksum: f6e596ec0bcd17c49a226cf050341c89 (MD5) Previous issue date: 2021
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5705192c7d0b21f35df493ebd81143fa https://doi.org/10.18512/rbms2021v20e1210 Zobrazit plný text záznamu