Análise de crescimento do crisântemo de vaso, cultivar Puritan, irrigado em diferentes tensões de água em ambiente protegido

Fárias, Maryzélia Furtado de; Saad, João Carlos Cury

doi:10.4025/actasciagron.v33i1.1763

Cited by 7 publications

(7 citation statements)

References 2 publications

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“…This positive response to soil water contents in plant vegetative growth can be explained by the stimulus of the water to a greater assimilation of carbohydrates, since it is a significant component of photosynthesis, besides stimulating the increase in leaf surface. Farias & Saad (2011), studying the growth of irrigated chr ysanthemum under water tensions in protected environment, observed reduction in leaf area and leaf dry matter at the lowest tensions (-30 kPa), showing the importance of the water for plant growth. Under water stress conditions, the leaves tend to expand less than they would do under adequate water conditions.…”

Section: Resultsmentioning

confidence: 98%

Soil water content and wood ash fertilization on the cultivation of gladiolus

Pereira

Silva

Bonfim-Silva

2016

Rev. bras. eng. agríc. ambient.

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Irrigation management, associated with the management of fertilization through the use of waste from plant material burning, has proven to be a sustainable strategy to increase the production of ornamental plants in greenhouses. The objective of this study was to evaluate the development of gladiolus subjected to soil water contents and wood ash fertilization in a Cerrado Oxisol. The experiment was conducted under controlled conditions from April to September 2014, in a randomized block design, arranged in a 5 x 5 factorial, with four replicates. The treatments consisted of five water contents (7, 14, 21, 28, and 35%) and five doses of wood ash (0, 8, 16, 24 and 32 g dm-3). Irrigation management was carried out using the portable probe Diviner 2000® . The evaluated variables were: plant height, number of leaves, shoot and root dry matter and diameter and mass of corms. The best results for diameter and mass of corms and number of leaves were obtained with combinations of soil water contents higher than 24% and fertilization with wood ash doses higher than 11 g dm-3.

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Section: Resultsmentioning

confidence: 98%

Soil water content and wood ash fertilization on the cultivation of gladiolus

Pereira

Silva

Bonfim-Silva

2016

Rev. bras. eng. agríc. ambient.

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“…In addition, PC max for MST and MSF in the Vertical system were reached at 68 and 57 DAT respectively, a fact that reinforces the behavior of TAL in this system. The decline in TAL with increasing plant age seems to be common in short-cycle plants, since TAL represents the dry matter gain per area unit within the time unit, and provides inference to the photosynthetic efficiency (Farias & Saad, 2011).…”

Section: Resultsmentioning

confidence: 99%

Tomato growth analysis across three cropping systems

et al. 2017

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The objective of this work was to analyze the growth of the Upiã tomato cultivar in the Vertical, Crossed Fence and Viçosa cultivation systems, in order to obtain explanations for the productive gains achieved in the Viçosa system. The experiment was conducted in Viçosa, Minas Gerais State, Brazil, from August 21st to December 5th, 2012, in the scheme of subdivided plots, being the plots represented by the cultivation systems: Vertical, using tape, 1.0×0.5 m spacing; Crossed Fence, staked with bamboo, 1.0x0.5 m spacing; and Viçosa, using tape, 2.0x0.2 m spacing. The subplots were composed by the sampling times of the plants: 15, 30, 45, 60 and 75 days after transplanting. The experimental design was in randomized blocks, with four replications. Each plot was composed by three lines of 10 plants, making a total of 30 plants per plot, being evaluated the four central plants of each plot. We evaluated the dry matter of leaves (MSF), stem (MSC), inflorescences (MSI), fruits (MSFr) and total (MST). Using the foliar area index, measured by digital scanners and the previously obtained dry masses, we determined the physiological growth indices: foliar area index (IAF), specific foliar area (AFE), relative growth rate (TCR), and net assimilation rate (TAL). The Viçosa system altered the growth pattern of the tomato, quantified by the growth analysis, in comparison to Crossed and Vertical Fences. The prolongation of the second growth phase for the dry matter of fruits could possibly explain the productive gains obtained in the Viçosa system. Additional studies are required in order to clarify the relationship between the duration of the second phase of fruit dry matter growth, the physiological indexes AFE, IAF and TAL with the size and fruit yield of the tomato.

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“…O tratamento testemunha, sem aplicação de nitrogênio, apresentou menor TCR no início do ciclo, indicando que as plantas tiveram menor velocidade de crescimento inicial, quando comparado com o dos demais tratamentos. Este comportamento de redução na capacidade da planta de produzir material novo ao longo do ciclo, e consequente redução na TCR, é também reportado na literatura para outras culturas, como batata (Aguiar Netto et al, 2000) e crisântemo (Farias & Saad, 2011). Para a taxa de assimilação líquida (TAL), que expressa a taxa de fotossíntese líquida em termos de matéria seca produzida, verifica-se, para todas as doses de nitrogênio, um incremento no início do ciclo da cultura, com posterior redução deste parâmetro até final do ciclo da cultura (Figura 1f).…”

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Análise de crescimento e produtividade do pak choi cultivado sob diferentes doses de nitrogênio

et al. 2013

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Growth analysis and productivity of Pak choi grown under different nitrogen ratesThe aim of the present study was to evaluate the influence of nitrogen rates on growth and yield of Pak choi. The experiment was carried out under greenhouse conditions from October to November 2007 in Marechal Cândido Rondon, PR. The experimental design was randomized block design, with five treatments (0, 60, 105, 150, 195 kg ha -1 of N) and four replicates. The nitrogen was applied in three different times (transplanting, 7 and 14 days after transplanting) and five collections were performed in intervals of seven days. Based on dry matter production and leaf area, were calculated the growth parameters relative and absolute growth rate, net assimilation rate, leaf area ratio and leaf area specific. At harvest were evaluated plant height, diameter, shoot fresh weight and yield. Nitrogen fertilization until 195 kg ha -1 of N provides increases in growth and productivity of Pak choi. . Foram realizadas cinco coletas das plantas, semanalmente, avaliando-se a produção de massa da matéria seca e área foliar, para obtenção das taxas de crescimento absoluto e relativo, taxa assimilatória líquida, razão de área foliar e área foliar específica. Na colheita, foram avaliados altura da planta, diâmetro e matéria fresca da parte aérea e produtividade. Incrementos na adubação nitrogenada até a dose de 195 kg ha -1 proporcionam incrementos no crescimento e produtividade do pak choi. Palavras-chave:Brassica campestris var. chinensis L., adubação nitrogenada, taxa de assimilação líquida. 499Análise de crescimento e produtividade do pak choi cultivado sob diferentes ...

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Análise de crescimento do crisântemo de vaso, cultivar Puritan, irrigado em diferentes tensões de água em ambiente protegido

Cited by 7 publications

References 2 publications

Soil water content and wood ash fertilization on the cultivation of gladiolus

Soil water content and wood ash fertilization on the cultivation of gladiolus

Tomato growth analysis across three cropping systems

Análise de crescimento e produtividade do pak choi cultivado sob diferentes doses de nitrogênio

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