Please use this identifier to cite or link to this item:
|Title:||Impact of nitrogen and potassium on coffee rust|
|Keywords:||Coffee - Mineral nutrition|
Coffee - Fertilization
Café - Nutrição mineral
Café - Fertilização
|Citation:||PÉREZ, C. D. P. et al. Impact of nitrogen and potassium on coffee rust. European Journal of Plant Pathology, Dordrecht, v. 154, p. 1-11, 2019. DOI: https://doi.org/10.1007/s10658-019-01765-4.|
|Abstract:||Diseases of the coffee plant can be effectively managed via well-balanced nutrition. This study assessed the effect of nitrogen and potassium fertilizers on the intensity of coffee (Coffea arabica) rust (Hemileia vastatrix) under greenhouse conditions. The susceptible cultivar New World 376/4 was used as the test species. Treatments included five N rates (3, 7, 11, 15 and 19 mmol L−1) with five K rates (3, 5, 7, 9 and 11 mmol L−1) in a 5 × 5 factorial design, for a total of 25 treatments and three replications with each treatment involving two plants growing in a nutrient solution. The completely randomized experimental design permitted evaluation of N and K on rust incidence and disease severity. The portion below the severity progress curve (AUDPCS) was calculated. Disease severity increased 16.48% with a dose of 7 mmol N L−1 and 11 mmol K L−1. There was an interaction of N with K in the AUDPCS and dried plant mass occurred. The AUDPCS (42.00) was lower when the next dose used was a combination of 19:07 mmol L−1 of N and K. A significant negative correlation was seen with the dry mass of the coffee seedlings.|
|Appears in Collections:||DCS - Artigos publicados em periódicos|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.