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Canola yield under different irrigation frequencies and nitrogen levels in the Brazilian Cerrado Ciência e Agrotecnologia
Sanches,Arthur Carniato; Gomes,Eder Pereira; Azevedo,Edéria Pereira Gomes.
ABSTRACT In the Brazilian Cerrado, canola is grown in the off-season. During this period, rainfall is insufficient to ensure the maximum crop yield, and irrigation is needed. Canola has a high demand for nitrogen; thus, the application of this nutrient is essential for obtaining a good crop yield. Therefore, a study was conducted at the Federal University of Grande Dourados in 2012 and 2013 using a randomized block split-plot design with four repetition treatments in the plot that consisted of three irrigation frequencies (no irrigation, weekly irrigation and irrigation three times per week). Subplots received different doses of nitrogen: 0, 30, 60, 90 and 120 kg ha- 1 in 2012 and 0, 60, 120, 180 and 240 kg ha-1 in 2013. In both periods, the irrigation...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brassica napus L.; Oil seeds; Tensiometry.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400367
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Physiological quality and seed respiration of primed Jatropha curcas seeds Acta Botanica
Horbach,Micheli Angelica; Dranski,João Alexandre Lopes; Malavasi,Ubirajara Contro; Malavasi,Marlene de Matos.
ABSTRACT Seed deterioration is a natural and irreversible process. Nevertheless, seed priming with water and antioxidants can minimize oxidative damage in oilseeds, resulting in attenuation of seed deterioration. The objective of this assay was to evaluate seed priming on respiratory activity of Jatropha curcas submitted to accelerated aging. Seeds from two provenances (Janauba and Pedro J. Caballero) were submitted to three priming treatments (control, immersion in deionized water, and with 750 µmol L-1 of ascorbic acid) and treated for accelerated aging at 41 °C for 72 h. The results showed that the priming of J. curcas seeds promoted tolerance to accelerated aging. Primed seeds, with ascorbic acid from Janauba and deionized water from Pedro J....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Accelerated aging; Ascorbic acid; Gas chromatography; Oil seeds; Physic nut.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000100063
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