Frequência de irrigação e aplicação de N em meloeiro irrigado por gotejamento nas condições semiáridas do Nordeste

Filho, João Valdenor Pereira; Bezerra, Francisco Marcus Lima; Silva, Alexandre Reuber Almeida; Sousa, Carlos Antônio Ferreira de; Castro, J.

doi:10.15361/1984-5529.2014v42n1p11-22

Cited by 7 publications

(5 citation statements)

References 3 publications

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“…The severity of the disease in relation to time was determined every seven days, using a scale described by Santos et al (2005b) and Sousa et al (2014), where: 0= healthy plants; 1= plants with less than 1% of damaged leaf area; 3= plants between 1 and 5% of damaged leaf area; 5= plants between 6 and 25% damaged leaf area; 7= pants between 26 and 50% of damaged leaf area; 9= plants showing more than 50% of damaged leaf area. Then, the grades attributed to disease in leaves were converted to percentages of diseased leaf area by using the midpoint of each grade, according to the number of evaluations of each trial, according to the onset of the disease.…”

Section: Methodsmentioning

confidence: 99%

“…to growing, development, and productive performance of the plants (Pereira Filho et al, 2014). Melon production in Brazil is around 570.000 ton, and the It is grown mainly in tropical countries, due to the climate characteristics (temperature, relative humidity and luminosity) which contribute positively M elon (Cucumis melo) is an oleraceae of great acceptance in the world market of fresh fruits, including Brazil (Vargas et al, 2008).…”

Section: Received On December 2 2016; Accepted On August 8 2017mentioning

confidence: 99%

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Severity of gummy stem blight on melon in relation to cultivars, use of fungicides and growing season

et al. 2017

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The authors aimed to evaluate the resistance to gummy stem blight and the agronomic traits of the melon crop in the Southern Region of the State of Tocantins, Brazil, in two growing seasons, submitted or not to treatment with fungicides. Two experiments were carried out: dry season (experiment I), and rainy season (experiment II), respectively, comprising the periods from July to October 2013 and from March to May 2014. Six melon cultivars were used in each season. In the dry season: Eldorado 300, Hibrix, Dourado Amarelo, Louro, Gaúcho Redondo and Canarian; and in the rainy season: Eldorado 300, Hibrix, HF-4439, Louro, Gaúcho Redondo and Canarian. Treatments consisted of each cultivar and split plot with (WA) or without fungicides application (NA). All cultivars were susceptible to disease, considering that Gaúcho Redondo was the least susceptible in the dry season. The fungicide application decreased disease severity in the dry season, however the productivity of the crop in treatments without fungicide application were not compromised, due to the late onset of the disease, and ranged from 19.2 t/ha for Eldorado 300 up to 41.9 t/ha for Canarian. The total soluble solids showed average values of 12°Brix, except for cultivar Gaúcho Redondo, which showed Brix value lower than commercial standards. During the rainy season, fungicide application did not protect the plants, which did not complete the cycle, resulting in the absence of marketable fruit production. The climatic characteristics observed in the rainy season, with high humidity, leaf wetness and high temperatures are favorable for the development of gummy stem blight in melon plants. Thus, in Tocantins, the dry season is characterized as the best time of year for cultivation, between April and September.

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Section: Methodsmentioning

confidence: 99%

Section: Received On December 2 2016; Accepted On August 8 2017mentioning

confidence: 99%

Severity of gummy stem blight on melon in relation to cultivars, use of fungicides and growing season

et al. 2017

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“…Main branch elongation in melon plants leads to an increase in the number of primary and secondary branches, as well as in gain of leaf area due to the increase in the number and size of leaves, which can maximize the production of photoassimilates. In cantaloupe melon, Pereira Filho et al (2014) found maximum CD and MBL of 13.05 mm and 1.70 m, respectively, with the use of 90 kg ha -1 of N, split and applied at 0, 20, 30 and 50 days after sowing. It is possible to infer that these differences are related to the cultivars, irrigation management, method and time of fertilizer application and local edaphoclimatic conditions.…”

Section: Resultsmentioning

confidence: 90%

“…The increase observed in the vegetative growth of melon as the N levels increased in fertigation is justified by the contribution of this element to plant growth, acting on several physiological processes, such as growth, cell differentiation and division, and synthesis of amino acids and proteins. Its deficiency results in lower growth (PEREIRA FILHO et al, 2014;PERCHLIK;TEGEDERE, 2018). ** significant at 1% probability level, * significant at 5% probability level by Student's t-test.…”

Section: Resultsmentioning

confidence: 99%

Efficiency of nitrogen and potassium application on phytotechnical parameters and yield of melon

et al. 2020

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Phytotechnical parameters, yield and fertilizer use efficiency are relevant to the rational management of fertigation, especially in cultivation of high technological level. Thus, the objective was to evaluate the influence and efficiency of nitrogen (N) and potassium (K) application on the phytotechnical parameters, yield and nutritional efficiency of yellow melon in a fertigation system. The experiment was conducted in the city of Bom Jesus-PI, Brazil, from January to April 2016, in a strip-block design with four replicates, and the treatments consisted of five N levels (0, 45, 90, 135 and 180 kg ha-1 in the form of urea) and five K levels (0, 60, 120, 180 and 240 kg ha-1 in the form of potassium chloride), applied through fertigation. Collar diameter, main branch length, leaf chlorophyll content, number of leaves, leaf area index, biomass accumulation, fruit yield, and N and K use efficiencies were evaluated. Applications of 180 kg ha-1 of N and 240 kg ha-1 of K, respectively, led to the highest growth of the melon, while maximum production was obtained with the use of 112.50 and 165 kg ha-1 of N and K, respectively. The efficiency of N and K use decreased with increasing levels.

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“…On the other hand, the application of adequate water levels can considerably improve their yield and reduce losses of water sources (Pereira Filho et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Agronomic efficiency of ‘Cantaloupe’ melon under different water blades and organic fertilization

Irineu

Figueredo

et al. 2018

Com. Sci.

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The objective of this study was to evaluate the effect of different irrigation blades on the presence and absence of biofertilizer on the agronomic performance of the ‘Cantaloupe’ melon in the Paraíba backwoods. The work was conducted under field conditions in the Agroecology Sector, belonging to the State University of Paraíba (UEPB), Campus IV. The experimental design was a randomized block using four irrigation blades (60, 80, 100 and 120% - ET0, (mm day-1)) with presence and absence of biofertilizer replicated six times. The following variables were evaluated: main branch length, leaf area, number of leaves, phytomass aerial part, pulp diameter, soluble solids, bark diameter, number of seeds per fruit, seed weight per fruit and weight of 100 seeds. The irrigation blade of 120% of ET0 promoted greater growth and development since biofertilizer application provided a greater number of seeds per fruit and weight of 100 seeds, there was no interaction between the factors studied in both variables evaluated in the Cantaloupe melon.

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Frequência de irrigação e aplicação de N em meloeiro irrigado por gotejamento nas condições semiáridas do Nordeste

Cited by 7 publications

References 3 publications

Severity of gummy stem blight on melon in relation to cultivars, use of fungicides and growing season

Severity of gummy stem blight on melon in relation to cultivars, use of fungicides and growing season

Efficiency of nitrogen and potassium application on phytotechnical parameters and yield of melon

Agronomic efficiency of ‘Cantaloupe’ melon under different water blades and organic fertilization

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