Soil morphostructural characterization and coffee root distribution under agroforestry system with Hevea Brasiliensis

Nunes, Amanda Letícia Pit; Cortez, Glassys Louise de Souza; Zaro, Geovanna Cristina; Zorzenoni, Thiago Ometto; Melo, Thadeu Rodrigues de; Figueiredo, Alex; Aquino, Gisele Silva de; Medina, Cristiane de Conti; Ralisch, Ricardo; Caramori, Paulo Henrique; Guimarães, María de Fátima

doi:10.1590/1678-992x-2019-0150

Cited by 5 publications

(3 citation statements)

References 46 publications

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“…Genotypes that have deep roots tend to have a greater capacity to absorb water, nutrients and ensure plant anchorage. Evidently, a root system with deep roots and good distribution along the planting lines, as in the case of plants of Group I, for the characteristic surface area and root length, can be the positive key for the selection of more resistant and productive materials [36].…”

Section: Discussionmentioning

confidence: 99%

Variability of Root System Size and Distribution among Coffea canephora Genotypes

et al. 2022

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This work aimed to evaluate the variability in the distribution of the root system among genotypes of C. canephora cv. Conilon and indicate management strategies for a more efficient mineral fertilization. Root distribution was evaluated in six genotypes. The experimental design was in randomized blocks with three replications. Soil monoliths measuring about 27 cm3 were collected at six different soil depths, at three row distances and nine distances of inter-row planting. The collections were carried out in one plant of each repetition. In total, 1296 samples were evaluated. The roots were washed, digitized and processed to quantify length density, volume, surface area and diameter. The distribution of the root system was characterized using semivariograms. It was observed that the highest concentration of roots occurred in the distances close to the irrigation drippers. There was variation in the distribution of the root system among the genotypes. However, in general, the root system is concentrated at a depth of 0 to 20 cm in the soil, at distances up to 50 cm in the planting row and up to 60 cm in inter-rows. Therefore, the greatest efficiency in nutritional management can be achieved by applying fertilizers within a radius of 50 cm around the plant.

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Section: Discussionmentioning

confidence: 99%

Variability of Root System Size and Distribution among Coffea canephora Genotypes

et al. 2022

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“…), where coffee rows were oriented East-West, in 2.5 m distance among them and 0.5 m between plants in the row (planting density of 8,000 plants ha −1 ). The soil was dusky-red dystrophic latosol, with 790 g clay, 160 g silt, and 50 g sand per kg of soil in 0 to 0.20 m depth layer (Nunes et al, 2021). Climate of the region is subtropical, Köppen-Geiger climate type Cfa, with average annual precipitation of about 1,585 mm, ranging from 55 mm in the driest month (August) to 245 mm in wettest one (January).…”

Section: Plant Materials and Experimental Conditionsmentioning

confidence: 99%

Drought responses in Coffea arabica as affected by genotype and phenophase. I – leaf distribution and branching

Rakocevic,

Matsunaga,

Pazianotto

et al. 2024

Ex. Agric.

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Summary In Coffea arabica, there is a small genetic distance between wild and bred genotypes. However, coffee genotypes express differential acclimation to multiple drought cycles, allowing them to successfully deal with water-limiting conditions. We hypothesized that bred coffee cultivars have a plant structure less sensitive to drought than wild genotypes. Plant and leaf architecture were analyzed over the coffee strata of two cultivars (Iapar 59 and Catuaí 99) and two wild Ethiopia accessions (‘E083’ and ‘E027’) grown under rainfed conditions and irrigation. During two consecutive productive years, evaluations were taken at leaf and berry expansion (BE1 and BE2) and harvest (BH1 and BH2) phenophases. The plant canopy was divided into up to four strata of 40 cm of thickness. Topological and geometric coding of coffee trees was performed in three botanical scales – metamers, branches, and plants in multiscale tree graphs (MTGs), following the VPlants modeling platform. Leaf and branch area per plant increased with tree structure development, being always significantly higher in irrigated than in rainfed plants over all phenophases. The individual leaf area was the least sensitive to water regime in Catuaí 99, while the 2nd order axis elevation – angle in relation to horizontal plane, ranging from 0° to 90° – of bred cultivars was less sensitive to drought than in ‘E083’. This finding partially corroborated our hypothesis that orchestrated reprograming of leaf/branch responses over the vertical plant profile were less sensitive to water availability in cultivars than in wild accessions. Leaves of 2nd to 4th-order branching were roughly plagiophile, while the 1st-order leaves were classified as extremophiles. When the coffee leaves were planophile, irrespective of genotype, this pattern was found at the lowest, 1st plant stratum, and the newest developed 4th stratum. Such responses were not obligatorily related to water regime, similar to branch elevation – with exception of ‘E083’, very sensitive to drought. Taken together, our data suggest that the leaf and branch elevations in C. arabica were more influenced by light distribution through the canopy profile – i.e., self-shading – than by water availability.

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“…Arg.) can generate additional income to producers while showing little competition with coffee trees in the upper soil layers, due to their characteristics of adaptation, rusticity, upright crown, and deep root system (Zaro et al, 2020;Nunes et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Coffee crops adaptation to climate change in agroforestry systems with rubber trees in southern Brazil

Zaro

Caramori²,

Wrege

et al. 2023

Sci. agric. (Piracicaba, Braz.)

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Adaptation to climate change is a strategy for crops to cope with the scenario of rising temperatures worldwide. In the case of Coffea arabica L., the use of agroforestry systems (AFS) with woody species is a promising practice to reduce excessive heat during the day. This study aimed to 1) evaluate air temperature changes that occur in an AFS of coffee and double alleys of rubber trees (Hevea brasiliensis Müell. Arg.) and 2) carry out an analysis of future warming scenarios by comparing the cultivation of Arabic coffee in full sun and in an AFS of double alleys of rubber trees. The microclimatic variables were measured between two rows of coffee trees at 1.0 m of height from June 2016 to June 2018. The results indicate that the AFS with double alleys of rubber trees spaced 16 m apart had an average temperature reduction from 1.4 to 2.5 °C from 10h00 to 16h00. The study also simulated temperature increases of 1.7, 2.6, 3.1, and 4.8 °C from 2018 to 2099, according to scenarios predicted by the Intergovernmental Panel on Climate Change (IPCC), and the impact in coffee production in Paraná State, Brazil. Using the climatic generator PGECLIMA_R, simulations suggest a progressive reduction of traditional areas suitable for open-grown coffee in the state. Production conditions can be maintained through the AFS, since the systems attenuate mean temperatures by 1-2 °C. We conclude that the AFS of coffee and rubber trees contribute to coffee crop adaptations to a future warmer environment.

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Soil morphostructural characterization and coffee root distribution under agroforestry system with Hevea Brasiliensis

Cited by 5 publications

References 46 publications

Variability of Root System Size and Distribution among Coffea canephora Genotypes

Variability of Root System Size and Distribution among Coffea canephora Genotypes

Drought responses in Coffea arabica as affected by genotype and phenophase. I – leaf distribution and branching

Coffee crops adaptation to climate change in agroforestry systems with rubber trees in southern Brazil

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