Fertilidade do solo e estado nutricional do cafeeiro cultivado em atmosfera enriquecida com CO2

Maluf, Henrique José Guimarães Moreira; Ghini, R.; Melo, Laura Beatriz Batista de; Silva, Carlos Alberto

doi:10.1590/s0100-204x2015001100012

Cited by 6 publications

(6 citation statements)

References 21 publications

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“…Similar results were obtained by Maluf et al (2015) and by Flori and Resende (2016). Maluf et al (2015) found in the coffee area, both at 0-0.1m and 0.1-0.2m soil layers, higher values of pH, organic matter, Ca 2+ , Mg 2+ and row saturation than in the transplant line, in the fertilizer strip. Flori and Resende (2016) obtained, at 0-0.2m soil layer, higher levels of organic matter, P and Ca 2+ between rows in relation to the banana plantation row.…”

Section: Methodssupporting

confidence: 88%

Sites and Sampling Tools in the Soil Fertility Evaluation of Coffee Plants in Production

Mantovani

Lima

Garcia

et al. 2019

C.Sci.

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In soil sampling, the collection site and the tool used may induce errors that can compromise the results of the chemical analysis and, consequently, the definition of corrective and fertilizer doses. The objective in this study was to evaluate soil sampling sites and tools in a coffee growing area. The experiment was carried out in a field in the municipality of Alfenas-MG, in a 35-year coffee field. A randomized block design was used in a 3 x 5 factorial scheme and 4 replications, totaling 60 experimental units. The treatments consisted of 3 sampling sites: in the fertilizer strip (located in the projection of the plant canopy); between rows; and in the total area, with 1/3 of the samples collected under the canopy and close to the plant stem, 1/3 in the canopy projection and 1/3 collected between rows; and 5 sampling tools: Dutch auger; screw auger; probe; hoe and drill. Soil samples were collected at a depth of 0 to 0.2 m, and each composite sample was obtained by assembling and mixing 20 single samples. At each sampling point, an area of 2m2 was delimited, in which simple samples were collected in all the evaluated places and with all the tools used. The following parameters were determined in the soil samples: pH in CaCl2; potential acidity (H+Al); organic matter; P, extracted by Mehlich; K+, Ca2+, Mg2+ and base saturation. In a coffee-growing area, he fertilizer strip (canopy projection) has topsoil with higher acidity and lower contents of organic matter and nutrients P, K+, Ca2+ and Mg2+ than between rows. The tools used for soil sampling do not influence the results of soil chemical analysis in the coffee-growing area.

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Section: Methodssupporting

confidence: 88%

Sites and Sampling Tools in the Soil Fertility Evaluation of Coffee Plants in Production

Mantovani

Lima

Garcia

et al. 2019

C.Sci.

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“…Martins et al (2014) avaliaram o efeito combinado do aumento da concentração de CO 2 e da temperatura e verificaram que, apesar das mudanças promovidas pelos dois fatores do ambiente, a maioria dos nutrientes foi mantida dentro de uma faixa considerada adequada, o que indica que a planta pode manter balanços minerais satisfatórios nos cenários climáticos futuros. Entretanto, em experimento do tipo Face, verificou-se que, em cafeeiros cultivados em atmosfera enriquecida com CO 2 , o teor de P disponível no solo é o que mais se reduz, e isto é indicativo da necessidade de reposição adequada deste nutriente (Maluf et al, 2015).…”

Section: Resultsunclassified

Impacto do aumento da concentração atmosférica de dióxido de carbono sobre a ferrugem e o crescimento do cafeeiro

Tozzi

Ghini

2016

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito do aumento da concentração de dióxido de carbono atmosférico sobre o crescimento de plantas e a severidade da ferrugem (causada por Hemileia vastatrix) em cafeeiro (Coffea arabica). Utilizaram-se as cultivares 'Obatã IAC 1669-20' e 'Catuaí Vermelho IAC 144', moderadamente resistente e suscetível à doença, respectivamente. Os tratamentos consistiram de 400 e 508 μmol mol -1 de CO 2 atmosférico, em dois tipos de estufas de topo aberto (OTC). As plantas das duas cultivares, cultivadas nas OTCs com adição de CO 2 , apresentaram aumento de área foliar, e da taxa de crescimento em altura e em diâmetro do caule, em comparação às plantas cultivadas em estufas à concentração ambiente de CO 2 ; porém, as cultivares não diferiram quanto ao teor de cera das folhas. Em 'Catuaí Vermelho IAC 144', a severidade da ferrugem diminuiu com o aumento da concentração de CO 2 , quanto ao número de lesões, área foliar lesionada, número de lesões esporuladas, área lesionada esporulada, percentagem de área foliar lesionada e área abaixo da curva de progresso da doença; no entanto, em 'Obatã IAC 1669-20', a severidade da doença não variou. A incidência de folhas lesionadas por planta, o período latente, a germinação de urediniósporos e a formação de apressórios não são alterados, à dose de 508 μmol mol -1 de CO 2 , em ambas as cultivares.Termos para indexação: Coffea arabica, Hemileia vastatrix, aquecimento global, CO 2 , mudanças climáticas. Impact of increasing atmospheric concentration of carbon dioxide on coffee leaf rust and coffee plant growthAbstract -The objective of this work was to evaluate the effect of increasing the atmospheric concentration of carbon dioxide on plant growth and leaf rust severity (caused by Hemileia vastatrix) on coffee (Coffea arabica). The 'Obatã IAC 1669-20' and 'Catuaí Vermelho IAC 144' cultivars, moderately resistant and susceptible to the disease, respectively, were used. The treatments consisted of 400 and 508 μmol mol -1 atmospheric CO 2 , in two types of open-top chambers (OTC). Plants of the two cultivars, grown in OTCs with addition of CO 2 , showed increased leaf area, and increased growth rate of height and stem diameter, in comparison with plants in OTCs with ambient CO 2 concentration; however, the cultivars did not differ for leaf-wax content. On 'Catuaí Vermelho IAC 144', rust severity reduced at increased CO 2 concentration, for number of lesions, lesioned leaf area, number of sporulated lesions, sporulated leaf area, percentage of lesioned area, and area under disease progress curve; however, on 'Obatã IAC 1669-20', the disease severity did not vary. The incidence of lesioned leaves per plant, latent period, urediniospore germinations, and appressorium formation are not changed by the 508 μmol mol -1 CO 2 dose in both cultivars.

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“…The CO 2 levels on the eCO 2 plots were kept within the target concentration for 60% of the experimental period. The soil is classified as dystrophic Red Latosol with clayey texture, according to the Brazilian soil classification (see Maluf, Ghini, Melo, & Silva, for soil fertility details). Soil is moderately acid with base saturation (V) of approximately 50% without high concentrations of aluminium, and its chemical characteristics were not significantly different among CON and eCO 2 plots (Table ).…”

Section: Methodsmentioning

confidence: 99%

“… Treatments: CON—ambient conditions (≈390 μmol/mol CO 2 ), eCO 2— CO 2 fertilization (≈550 μmol/mol CO 2 ); SB—sum of basis; CEC—cation exchange capacity; V—percentage of soil base saturation; OM—organic matter content. Adapted from Maluf et al (). …”

Section: Methodsmentioning

confidence: 99%

CO₂ fertilization does not affect biomass production and nutritive value of a C₄ tropical grass in short timeframe

Filho

Lima

Sakita

et al. 2019

Grass and Forage Science

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Increased atmospheric carbon dioxide (CO 2 ) is a consequence of recent anthropogenic environmental changes, and few studies have evaluated its effects on tropical grasses used in Brazilian pastures, the main feed source for major part of ruminant livestock.This study evaluated forage production, chemical composition, in vitro total gas production and organic matter degradability of Brachiaria brizantha under contrasting CO 2 atmospheric conditions in a free air carbon dioxide enrichment (FACE) facility.The forage plants were sown in each of the 12 octagonal rings of the FACE facility: six under ambient atmospheric CO 2 concentration of approximately 390 μmol/mol, hereafter referred to as control (CON) plots, and other six rings enriched with pure CO 2 flux to achieve a target CO 2 concentration of 550 μmol/mol, hereafter called elevated CO 2 (eCO 2 ) plots. Soil samples were collected to determine carbon and nitrogen concentrations. After seventy days of sowing, a standardization cutting was performed and then at regular intervals of 21 days the forage was harvested (ten harvest dates) and forwarded to laboratorial analyses. Forage above-ground biomass production (dry matter (DM): 6,143 vs. 6,554 kg/ha), as well as morphological characteristics (leaves: 71% vs. 68%; stem: 28% vs. 31%), chemical composition (crude protein: 162.9 vs. 161.8; neutral detergent fibre: 663.8 vs. 664.3; acid detergent fibre: 369.5 vs. 381; lignin: 60.1 vs. 64.1 g/kg DM; total C: 45.9 vs. 45.9; total N: 2.8 vs. 2.8; total S: 0.2% vs. 0.2%), organic matter in vitro degradability (573.5 vs. 585.3 g/kg), methane (5.7 vs. 4.3 ml/g DM) and total gas (128.3 vs. 94.5 ml/g DM) production did not differ significantly between CON and eCO 2 treatments (p > .05). The results indicated that at least under short-term enrichment, B. brizantha was not affected by eCO 2 .

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Fertilidade do solo e estado nutricional do cafeeiro cultivado em atmosfera enriquecida com CO2

Cited by 6 publications

References 21 publications

Sites and Sampling Tools in the Soil Fertility Evaluation of Coffee Plants in Production

Sites and Sampling Tools in the Soil Fertility Evaluation of Coffee Plants in Production

Impacto do aumento da concentração atmosférica de dióxido de carbono sobre a ferrugem e o crescimento do cafeeiro

CO₂ fertilization does not affect biomass production and nutritive value of a C₄ tropical grass in short timeframe

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Fertilidade do solo e estado nutricional do cafeeiro cultivado em atmosfera enriquecida com CO2

Cited by 6 publications

References 21 publications

Sites and Sampling Tools in the Soil Fertility Evaluation of Coffee Plants in Production

Sites and Sampling Tools in the Soil Fertility Evaluation of Coffee Plants in Production

Impacto do aumento da concentração atmosférica de dióxido de carbono sobre a ferrugem e o crescimento do cafeeiro

CO2 fertilization does not affect biomass production and nutritive value of a C4 tropical grass in short timeframe

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CO₂ fertilization does not affect biomass production and nutritive value of a C₄ tropical grass in short timeframe