Elevated CO2 and warming change the nutrient status and use efficiency of Panicum maximum Jacq

Autor: Rafael Ferreira Barreto, Renato de Mello Prado, Juliana Mariano Carvalho, Roberto Botelho Ferraz Branco, Eduardo Habermann, Carlos Alberto Martinez
Přispěvatelé: Universidade Estadual Paulista (Unesp), Universidade de São Paulo (USP), São Paulo Agribusiness Technology Agency (APTA)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
0106 biological sciences
Canopy
Atmospheric Science
Leaves
Hot Temperature
Plant Science
Panicum
Biochemistry
01 natural sciences
Pasture
Cattle feeding
Soil
Nutrient
Grazing
Medicine and Health Sciences
Photosynthesis
Climatology
Multidisciplinary
geography.geographical_feature_category
Ecology
biology
Plant Biochemistry
Plant Anatomy
Eukaryota
04 agricultural and veterinary sciences
Plants
Chemistry
Physical Sciences
Medicine
Research Article
Ecological Metrics
Nitrogen
Climate Change
Science
Forage
Greenhouse Gases
Animal science
Dry weight
Environmental Chemistry
Animals
Grasses
Nutrition
geography
CAPIM MOMBAÇA
Ecology and Environmental Sciences
Osmolar Concentration
Chemical Compounds
Organisms
Biology and Life Sciences
Water
Nutrients
Carbon Dioxide
biology.organism_classification
Animal Feed
Photosynthetic Efficiency
Atmospheric Chemistry
Earth Sciences
040103 agronomy & agriculture
0401 agriculture
forestry
and fisheries
Environmental science
Calcium
Cattle
Anthropogenic Climate Change
010606 plant biology & botany
Zdroj: PLoS ONE, Vol 15, Iss 3, p e0223937 (2020)
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
PLoS ONE
ISSN: 1932-6203
Popis: Made available in DSpace on 2020-12-12T01:18:18Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-01 Panicum maximum Jacq. 'Mombaça' (Guinea grass) is a C4 forage grass widely used in tropical pastures for cattle feeding. In this study, we evaluated the isolated and combined effects of warming and elevated CO2 concentration [CO2] during summer on nutrient content, nutrient accumulation, nutrient use efficiency and growth of P. maximum under field conditions. Field temperature and [CO2] were controlled by temperature free-air controlled enhancement and free-air CO2 enrichment systems, respectively. We tested two levels of canopy temperature: Ambient temperature (aT) and 2°C above ambient temperature (eT), as well as two levels of atmospheric [CO2]: Ambient [CO2] (aCO2) and 200 ppm above ambient CO2 (eCO2). The experiment was established in a completely randomized design with four replications, in a 2×2 factorial scheme. After pasture establishment, plants were exposed to the treatments during 30 days, with evaluations at 9, 16, 23 and 30 days after the treatments started. Results were dependent on the time of the evaluation, but in the last evaluation (beginning of the grazing), contents of N, K, Mg and S did not change as a function of treatments. However, P decreased as a function of warming under both levels of [CO2], and Ca increased under [eCO2] combined with warming. There was an increase in root dry mass under warming treatment. Combined treatment increased N, Ca and S accumulation without a corresponding increase in the use efficiency of these same nutrients, indicating that the fertiliser dose should increase in the next decades due to climate change. Our short-term results in young and well fertilized pasture suggest that under the combination of [eCO2] and eT conditions, P. maximum productivity will increase and the nutritional requirement for N, Ca and S will also increase. Department of Soils and Fertilizers São Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences Department of Biology FFCLRP São Paulo University (USP) São Paulo Agribusiness Technology Agency (APTA) Department of Soils and Fertilizers São Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences
Databáze: OpenAIRE
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