Geostatistical analysis of coffee leaf rust in irrigated crops and its relation to plant nutrition and soil fertility

Silva, M. G.; Pozza, Edson Ampélio; Vasco, Gabriel Brandão; Freitas, Aurivan Soares de; Chaves, Eugênio; Paula, Paulo Victor Augusto Azevedo de; Dornelas, Gabriel Avelar; Alves, Marcelo de Carvalho; Silva, M. L. O.; Pozza, Adélia Aziz Alexandre

doi:10.1007/s12600-019-00714-5

Cited by 8 publications

(5 citation statements)

References 26 publications

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“…Therefore, nutritional balance can be just as important to disease control as adequate soil fertility conditions and environmental variables. As shown by Silva et al 21 , the incidence of coffee brown eye spot is correlated with Ca and Mg imbalance and with the leaf nutrients B, K and P, as there was a higher occurrence of the disease in plants with lower levels of these nutrients in the leaves. The differences in the concentration of Ca and K in the healthy and diseased areas of coffee leaves were also demonstrated by Belan et al 24 .…”

Section: Introductionmentioning

confidence: 86%

“…In addition to soil classi cation and climatic conditions, the nutritional status of plants can also be associated with disease progress 18,19,20 . Crops planted in soils with good fertility and plants with balanced nutrition have lower losses in productivity and a lower incidence of diseases than crops planted in soils with nutritional limitations 21,22 . This is because mineral elements are involved in the defense mechanisms of the plant, being components of cells and the cell wall, enzymes, inhibitors and regulators of secondary metabolites, and their de ciency damages the defense system of the plant 19,23 .…”

Section: Introductionmentioning

confidence: 99%

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The Rain Forest Environment and Oil Palm Fatal Yellowing

Pereira

Neto

Pozza

et al. 2021

Preprint

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Oil palm produces the most consumed vegetable oil in the world. In addition to being economically viable and having multiple uses, the crop has a strong ecological appeal, given its high level of carbon sequestration, its low environmental impact, and a low mechanization level in the harvest process, generating income and financial sustainability for the inhabitants of that biome. However, despite the large areas suitable for cultivation in harmony with the forest in Brazil, oil palm production has been limited by a disease known as fatal Yellowing (FY). In 30 years of research to determine the causal agent of this disease, many epidemiology studies with insects and plant pathogens have been performed, but there is no consensus on its cause. Abiotic factors have also started to be considered a possible cause of these symptoms. Therefore, to clarify the relationship of this disease to environmental variables, we studied the nutritional status of the plant, the soil class and fertility, the climatic variables and attempted to verify the set of proteins and their isoforms expressed in diseased palms showing FY symptoms and healthy palms. FY occurred under constant rain and in clay soils; consequently, the roots of these palm trees suffered anoxia, which caused nutritional problems and the accumulation of stress-related proteins. Under these conditions, the usually observed symptom was yellowing, which can lead to the death of the plant, giving the disease its name. In other words, the symptomatic picture is not associated with only a biotic cause. Thus, a pedological survey of the area, planting in soils not subject to waterlogging or with good drainage conditions, and the correct maintenance of soil fertility and plant nutrition may certainly contribute to the management of and reduction in fatal yellowing without the use of agrochemicals.

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Section: Introductionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

The Rain Forest Environment and Oil Palm Fatal Yellowing

Pereira

Neto

Pozza

et al. 2021

Preprint

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“…Furthermore, coffee leaf rust incidence data from April 2019 correlated positively with yield data collected in July 2019. The positive relationship between plant yield and coffee rust incidence has been widely discussed in the specialized literature [4,5,8,10,16,37,43,48].…”

Section: Correlation Of Data Derived From Sentinel 2 With Field Datamentioning

confidence: 99%

Relationship between Sentinel-2 orbital data and in situ monitoring of coffee rust

et al. 2020

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Coffee rust (Hemileia vastatrix Berkeley & Broome) is the main coffee disease in Brazil. Coffee rust control is calendarbased and performed by applying chemicals in order to avoid the outburst of disease epidemics. The aim of this work was to identify coffee rust using multispectral orbital sensing through analyses utilising vegetation indices and coffee rust incidence, defoliation and yield data obtained in situ. Field samples were georeferenced using a high-accuracy global navigation satellite system receiver in two plots, in a 42-year-old, leaf rust susceptible coffee cultivar. Conventional chemical control of rust was performed in only one of the plots to serve as control. Coffee rust incidence in areas with and without chemical control was assessed over 5 months, from December 2018 to April 2019, a period with optimal environmental conditions for disease occurrence. Following analyses of different vegetation indices and data sampled in the coffee crop, Pearson's correlations between the variables were verified. Reported correlations occurred mainly among coffee rust incidence levels in February 2019 and vegetation indices calculated using Sentinel-2 images from

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“…Disease incidence can also be modified by soil fertility and by fertilizer inputs. For example, Silva et al [ 27 ] showed that soil P and K correlated positively with coffee leaf rust incidence whereas Ca correlated negatively. Avelino et al [ 28 ] considered that fertilization would modify berry load and leaf area of coffee, and this would in turn modify the coffee risk infection cycle.…”

Section: Introductionmentioning

confidence: 99%

Organic Farming Practices and Shade Trees Reduce Pest Infestations in Robusta Coffee Systems in Amazonia

Piato

Subía

Pico

et al. 2021

Life

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Coffee agroforestry systems could reconcile agricultural and environmental objectives. While pests and diseases can reduce yield, their interactions with shade and nutrition have been rarely researched, and are particularly lacking in perennial systems. We hypothesized that intermediate shade levels could reduce coffee pests while excess shade could favor fungal diseases. We hypothesized that organic rather than mineral fertilization would better synchronize with nutrient uptake and higher nutrient inputs would be associated with reduced pest and disease damage due to higher plant vigor, yet effects would be less obvious in shaded plots as coffee growth would be light-limited. Using three-year-old trees of Coffea canephora var. Robusta (robusta coffee) in the Ecuadorian Amazon, we compared a full-sun system with four shading methods creating different shade levels: (1) Myroxylon balsamum; (2) Inga edulis; (3) Erythrina spp.; or, (4) Erythrina spp. plus Myroxylon balsamum. Conventional farming at either (1) moderate or (2) intensified input and organic farming at (3) low or (4) intensified input were compared in a split-plot design with shade as the main plot factor and farming practice as the sub-plot factor. The infestation of the following pests and disease incidences were evaluated monthly during the dry season: brown twig beetle (Xylosandrus morigerus), coffee leaf miner (Leucoptera coffeella), coffee berry borer (Hypothenemus hampei), anthracnose disease (Colletotrichum spp.), thread blight (Pellicularia koleroga), and cercospora leaf spot (Cercospora coffeicola). Coffee berry borer and brown twig beetle infestation were both reduced by 7% in intensified organic treatments compared to intensified conventional treatments. Colonization of coffee berry borer holes in coffee berries by the entomopathogenic fungus Beauveria bassiana was also assessed. Brown twig beetle infestation was significantly higher under full sun than under Inga edulis, yet no other shade effects were detected. We demonstrate for the first time how intensified input use might promote pest populations and thus ultimately lead to robusta coffee yield losses.

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Geostatistical analysis of coffee leaf rust in irrigated crops and its relation to plant nutrition and soil fertility

Cited by 8 publications

References 26 publications

The Rain Forest Environment and Oil Palm Fatal Yellowing

The Rain Forest Environment and Oil Palm Fatal Yellowing

Relationship between Sentinel-2 orbital data and in situ monitoring of coffee rust

Organic Farming Practices and Shade Trees Reduce Pest Infestations in Robusta Coffee Systems in Amazonia

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