MANEJO E VIABILIDADE ECONÔMICA DA IRRIGAÇÃO NO CULTIVO DE Calendula officinalis L.

Aleman, Catariny Cabral; Marques, Patrícia Angélica Alves

doi:10.15809/irriga.2016v1n1p29-37

Cited by 4 publications

(5 citation statements)

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“…It should be noted that this potential was equivalent to an irrigation depth of 300 mm over a period of 138 days after transplanting (DAT), and was close to that obtained for maximum water productivity in the marigold, of 202 mm over a period of 118 DAT. Marques, Bortolo and Santos (2011), and Aleman and Marques (2016), point out that the reduction in water productivity may result from a decrease in soil water availability in line with the lowest matric potentials. Depending on the time of exposure, amount of water deficit and stage of crop development, physiological processes such as photosynthesis, stomatal opening, the production of abscisic acid, leaf abscission and osmotic adjustment can have a negative impact on production.…”

Section: Resultsmentioning

confidence: 99%

Soil irrigation management: the effect on production and water productivity in the marigold

Aleman

Marques

2021

RCA

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The management of water resources in irrigated agriculture is a basic method of guaranteeing water use efficiency in agricultural crops. The aim of this study was to evaluate production and water productivity in the marigold under different soil-water matric potentials and at different stages of development. The experiment was conducted in pots in a protected environment. The experimental design was of randomised blocks with six treatments (-10, -15, -30, -40, -50 and -60 kPa) and 4 replications, giving a total of 24 experimental units for each individual trial, which were represented by the development stage of the marigold. Tensiometers were used to monitor the matric potential of the soil, with readings taken daily. The production and dry weight of the floral capitula were evaluated together with water productivity. The data were submitted to regression analysis. It was found that the variations in irrigation depth throughout the growth cycle and during the reproductive phase of the marigold gave significant results for the variables under analysis. For the complete cycle, the production of floral capitula was seen to be greater at a matric potential of -10 kPa, a higher value than the pressure at field capacity (-30 kPa). However, the greatest water productivity was obtained at a matric potential of -32.74 kPa.

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Section: Resultsmentioning

confidence: 99%

Soil irrigation management: the effect on production and water productivity in the marigold

Aleman

Marques

2021

RCA

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“…Irrigation for carrot crops, as for most vegetables, may increase crop yield and improve product quality, and is an important factor that determines the final production (5). Moreover, the application of an adequate quantity of water, which supplies the water needs of the crop deceases the spread of pests, diseases, and leaching of nutrients (8).…”

Section: Introductionmentioning

confidence: 99%

Irrigation water depths and soil covers in carrot crop

Vieira

Aleman

Freitas

et al. 2020

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26To increase the sustainability of irrigated cultivation, the use of soil coverings can favor 27 the reduction of water consumption. Thus, the aim of this research was to characterize the 28 carrot collection (cultivar Brasília) grown under different irrigation water depths and 29 different soil cover conditions. The experiment was conducted at the Federal University 30 of Viçosa, MG. The experimental design was a randomized block in a factorial scheme. 31Five percentages of the water capacity of the soil (20, 40. 60, 80 and 100%) were applied 32 using tensiometry, and three cultivation environments without cover (control), white 33 colored polyethylene, and biodegradable semi kraft paper. Soil and leaf temperature, 34 number of plants, root length, Normalized Difference Vegetation Index (NDVI) and fresh 35 root mass were evaluated. Then, the analysis of variance was performed using the F test. 36For comparison of means, the Tukey test (P ≤ 0.05) was used. For the regression analysis, 37 the equation with the largest significant fit was chosen. According to the results, the use 38 of semi kraft paper is an option in the cultivation of carrots. The use of semi-kraft paper 39 is an option for growing carrots better than white polyethylene. Levels up to 60% of the 40 actual water capacity in the soil showed positive results in the carrot production. 41 42 48Brazil is the fifth largest world producer of carrots (5) and the crop is considered 49 one of the four most important vegetable crops in the country. In 2017, the world 50 production of carrot was 42,831,598 tons (6) in Brazil alone, the 2018 harvest reached 51 about 14,077 kg ha, with emphasis on the state of Minas Gerais (7). 52The irrigation of carrots, like most vegetables, increases and improves the quality 53 of the product, moreover, it is an important factor in determining the production (5).With 54 an adequate application of the amount of water, the water needs of the harvest are 55 supplied, reducing the proliferation of pests, diseases and leaching of nutrientes (8). 56Hence, irrigation planning and management must be adopted to obtain maximum 57 efficiency and preserve the carrot's high economic value in the market (9). 58In order to favor the reduction of evapotranspiration and, thus, reduce the irrigation 59 necessary for agricultural crops, some soil coverings can be used. The technique of 60 covering the soil with organic or inorganic materials forms a physical barrier to limit 61 evaporation of water from the soil, it also maintains a good soil structure and protect crops 62 from contamination in contact with the soil (10). 63According to (11) soil cover with polyethylene film is still the most used in 64 vegetables by producers and this is due to the relatively low price of polymer materials 65 and durability. Despite this, there are several types of paper with potential for use as soil 66 cover, among which stand out the alternative papers, such as semi-kraft, recycled, paper 67 for printing newspapers and paper produced from cane straw sugar...

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“…O aumento na temperatura do ar e a falta de água limitam a produção de amendoim nas regiões tropicais e subtropicais com destaque para a região sudeste do Brasil, onde são encontrados os maiores produtores dessa oleaginosa (Aleman and Marques, 2016). Este é particularmente o caso quando as ondas de calor associadas às baixas precipitações atingem e/ou quando a irrigação não é possível e/ou mal gerida.…”

Section: Resultsunclassified

“…Segundo Moreno Pizani, (2017) são poucos os trabalhos relacionados com o efeito do estresse hídrico e/ou irrigação no sistema de cultivo de plantas medicinais; e poucos aqueles que tratam do manejo do uso da água no sistema de cultivo, principalmente em relação às espécies nativas brasileiras com potencial econômico. Entre estas espécies se podem citar: manjericão (Ocimum basilicum L.) (PRAVUSCHI et al, 2010); calêndula (Calendula officinalis L.) (Aleman and Marques, 2016;Bortolo et al, 2009); alecrim (Rosmarinus officinalis L.) (SINGH, 2004) A biossíntese de óleo essencial nas plantas medicinais é um processo bioquímico exotérmico e dependente da luz e do oxigênio; com isso um manejo racional da irrigação pode potencializar a biossíntese do óleo essencial (BROCHOT et al, 2017). Alguns estudos já comprovaram que o estresse hídrico possibilita a maior produção de óleo essencial pelas plantas medicinais (Moreno Pizani, 2017;Rioba et al, 2015).…”

Section: Introductionunclassified

Imagens termais: detecção espacial de estresse hídrico nas plantas e suas relações fisiológicas com a produção agrícola

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MANEJO E VIABILIDADE ECONÔMICA DA IRRIGAÇÃO NO CULTIVO DE Calendula officinalis L.

Cited by 4 publications

References 5 publications

Soil irrigation management: the effect on production and water productivity in the marigold

Soil irrigation management: the effect on production and water productivity in the marigold

Irrigation water depths and soil covers in carrot crop

Imagens termais: detecção espacial de estresse hídrico nas plantas e suas relações fisiológicas com a produção agrícola

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