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- Title
Respostas fisiológicas e bioquímicas de cultivares de girassol submetido à adubação com resíduo orgânico.
- Authors
MOURA, Maria da Conceição Freitas; DUTRA, Alek Sandro; MESQUITA, Rosilene Oliveira; SILVA, Maria Lilian dos Santos; LIMA, Eveline Nogueira
- Abstract
The organic fertilizer has provided best soil use and less environmental impact, studies related to organic constituents rich in potassium on sunflower cultivars is necessary, because potassium is a nutrient that has great influence on the production of achenes. Thus, the research aimed to evaluate the physiological and biochemical characteristics of two sunflower cultivars submitted to fertilization with organic residue of high potassium content. The experiment was a randomized block in factorial scheme 2x4+2 with two sunflower cultivars (BRS 122 e BRS 323), four doses of organic residue (0, 40, 80 e 120 Kg ha-1) more potassium chloride at a dose of 60 kg. ha -1 for both cultivars. The data were submitted to analysis of variance with Tukey test at 5% probability to compare averages and regression analysis. Measurements was performed in the leaf temperature and of the photosynthetic rates, transpiration, stomatal conductance, internal CO2 concentration and internal and external ratio of carbon, also determined the concentration of N-aminosolúveis, protein and soluble carbohydrate. The results showed that there was no significant difference between treatments (organic residue and potassium chloride), that is, the organic residue does not influence the physiology of sunflower cultivars, can be used as a potassium source in this culture.
- Publication
Nativa, 2020, Vol 8, Issue 3, p308
- ISSN
2318-7670
- Publication type
Article
- DOI
10.31413/nativa.v8i3.9340