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| Cacique,Isaias Severino; Bispo,Wilka Messner Silva; Araujo,Leonardo; Aucique-Pérez,Carlos Eduardo; Rios,Jonas Alberto; Silva,Leandro Castro; Rodrigues,Fabrício Ávila. |
| ABSTRACT Mango wilt, caused by the fungus Ceratocystis fimbriata, is an important disease affecting mango production. In view of the beneficial effects of potassium (K) in other profitable crops and the lack of information about the effect of macronutrients on mango wilt development, the present study aimed to evaluate how mango plants supplied with K respond physiologically when infected by C. fimbriata. Mango plants (» 3 years old) from cultivar Ubá were grown in plastic pots containing 58 mg of K·dm−3 (original K level based on the chemical analysis of the substrate) or in plastic pots with substrate amended with a solution of 0.5 M potassium chloride (KCl) to achieve the rate of 240 mg K·dm−3. Disease symptoms were more pronounced in inoculated plants... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mangifera indica; Gas exchange; Host defense; Mango wilt; Plant nutrition; Vascular disease. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400521 |
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| Oliveira,Tassia Boeno; Aucique-Pérez,Carlos Eduardo; Rodrigues,Fabrício de Ávila. |
| ABSTRACT Considering the importance of blast, caused by Pyricularia oryzae, to impact wheat yield, this study investigated whether the foliar spray of potassium silicate (PS) could affect the photosynthesis of wheat plants and its potential to reduce disease symptoms. The Exp. 1 aimed to determine the effect of the foliar spray of PS on the photosynthetic performance of plants and was arranged in a completely randomized design with six treatments (plants sprayed with PS rates of 2.5, 5.0, 7.5, 10.0, and 12.5 g·L-1 at 35 days after emergence) and six replications. The leaf gas exchange (net CO2 assimilation rate (A), internal CO2 concentration (Ci), stomatal conductance to water vapor (gs), and transpiration rate (E)) as well as fluorescence of chlorophyll... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L; Disease control; Fungal disease; Plant nutrition. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000300423 |
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