Early induction of orthotropic shoots in Coffea canephora

Espindula, Marcelo Curitiba; Araújo, Larissa Fatarelli Bento de; Schmidt, Raquel; Dias, Jairo Rafael Machado; Rocha, Rodrigo Barros

doi:10.1590/0034-737x202067040005

Cited by 3 publications

(2 citation statements)

References 15 publications

(17 reference statements)

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“…In coffee fruit production fields, plants first produce between 24 (Partelli et al, 2020) and 30 months (Bergo et al, 2020;Espindula et al, 2020), depending on the planting season and the flowering period, which generally occurs in July and August, under the conditions of the Western Amazon (Souza et al, 2017). As the product collected in the clonal garden is the cutting, and as the vegetative growth in crops under sprinkler irrigation in the Amazon is less affected by climate conditions (Dubberstein et al, 2017;Bazoni et al, 2020), the full production in the clonal garden can be considered as achieved from 24 to 28 months of age (Figure 4).…”

Section: Resultsmentioning

confidence: 99%

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New model of clonal garden for the production of robusta coffee plantlets

Espindula

Araújo

Diocleciano

et al. 2022

Pesq. agropec. bras.

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The objective of this work was to evaluate the production of cuttings of Coffea canephora genotypes, in a new system for training mother plants called “vertical clonal garden”. The proposed new system consists of training coffee plants with only one shoot and without bending the main shoot, so that the secondary orthotropic shoots, from which the clonal cuttings will be taken, are formed across the length of the stem in the vertical direction. The capacity for the production of cuttings of ten hybrid genotypes of coffee plants was evaluated over ten production cycles. The 'BRS 2314', 'BRS 3213', and 'BRS 3210' genotypes showed cutting production per cut of 425,000 cuttings per hectare, considered above the obtained average. The 'BRS 3193', 'BRS 2336', 'BRS 3220', and 'BRS 3137' genotypes were the least productive. Coffee plants trained in the “vertical clonal garden” system can produce about 425,000 cuttings per hectare per harvest period or about 1.275 million cuttings per hectare per year, over three harvest periods, with a greater ease in crop management and treatments.

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Section: Resultsmentioning

confidence: 99%

“…The bending of the orthotropic shoots of the coffee plants induces the growth of secondary orthotropic shoots (Espindula et al, 2020). However, under the conditions of the clonal garden, the bent shoots often impede the management of weeds, pests, and diseases, since the shoots are bent in the direction of the betweenrow area.…”

Section: Introductionmentioning

confidence: 99%

New model of clonal garden for the production of robusta coffee plantlets

Espindula

Araújo

Diocleciano

et al. 2022

Pesq. agropec. bras.

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CorrelatingCoffea canephora3D architecture to plant photosynthesis at a daily scale and vegetative biomass allocation

et al. 2022

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Coffea canephora has two botanical varieties, Robusta and Conilon. Intraspecific variability was hypothesized and projected for the selection of C. canephora plants able to maintain production in the context of global climate changes. For that, architectural, C-assimilation and biomass analyses were performed on 17-month-old Robusta (clones ‘A1’ and ‘3 V’) and Conilon (clones ‘14’ and ‘19’) varieties grown in non-limiting soil, water, and mineral nutrient conditions. Nondestructive coffee plant architecture coding, reconstruction, and plant photosynthesis estimations were performed using a functional-structural plant modeling platform OpenAlea. 3D reconstructions and inclusion of parameters calculated and estimated from light response curves, such as dark respiration (Rd), maximum rate of carboxylation of RuBisCO, and photosynthetic electron transport allowed the estimation of instantaneous and daily plant photosynthesis. The virtual orchard leaf area index was low, and light was not a limiting factor in early C. canephora development stages. Under such conditions, Robusta assimilated more CO2 at the plant and orchard scale and produced higher total biomass than Conilon. Lower plant daily photosynthesis and total biomass were correlated to higher Rd in Conilon than in Robusta. Among the architectural traits, leaf inclination, size, and allometry were most highly correlated with plant assimilation and biomass. Relative allocation in leaf biomass was higher in ‘19’ Conilon than in young Robusta plants, indicating intraspecific biomass partitioning. Similarly, variation in relative distribution of the root biomass and the root volume reflected clonal variation in soil occupation, indicating intraspecific variability in space occupation competitiveness. C. canephora denoted high root allocation in both Conilon and Robusta clones. However, relevant differences at sub-specific levels were found, indicating the high potential of C. canephora to cope with drought events, which are expected to occur more frequently in the future, due to climate changes. The methodology developed here has the potential to be used for other crops and tree species.

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Yield of robusta coffee in different spatial arrangements

Espindula

Tavella

Schmidt

et al. 2021

Pesq. agropec. bras.

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The objective of this work was to determine the contribution of the number of stems to the composition of individual plant yield, and to individual and overall robusta coffee (Coffea canephora) yield at different planting densities, using a fixed number of stems per plant. The experiment was carried out in two phases. The first phase was performed from 2011 to 2015, in the municipality of Ouro Preto do Oeste, in the state of Rondônia (RO), Brazil, to evaluate different numbers of stems per plant (1, 2, 3, 4, 5, and 6). The second phase was conducted from 2013 to 2018, in the municipality of Alta Floresta D’Oeste, RO, to evaluate plant densities (at 1,666, 1,904, 2,222, 2,666, and 3,333 plants ha-1), with an initial density of four stems per plant in all treatments. The increase of number of stems per plant promotes a quadratic response to the average and cumulated yield of coffee plants, and the maximum yield is attained with four stems per plant. The number of stems should not exceed four, to avoid their tipping during years of high production. Plant density of 3,333 plants per hectare, with 4 stems per plant and 1 m spacing, promotes the reduction of individual plant yield; however, it results in higher overall crop yield.

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Early induction of orthotropic shoots in Coffea canephora

Cited by 3 publications

References 15 publications

New model of clonal garden for the production of robusta coffee plantlets

New model of clonal garden for the production of robusta coffee plantlets

CorrelatingCoffea canephora3D architecture to plant photosynthesis at a daily scale and vegetative biomass allocation

Yield of robusta coffee in different spatial arrangements

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