In a small plot field test on cantaloupes, abamectin (Agri-mek®), cyromazine (Trigard®), spinosad (Success®), and pyriproxyfen (Knack®) demonstrated efficacy to reduce the number of mined leaves caused by leafminers (Liriomvza sativae and L. trifolii). Multiple applications of Agri-mek and Trigard resulted in melons having the fewest number of mined leaves. Success and Knack were effective in reducing the number of mined leaves relative to the untreated check. All of the treatments provided effective control of leafminers for 14 to 21 days after treatment. Success exhibited a rate response with the highest rate showing the fewest number of mined leaves compared to the lower rate.

Powdery mildew of cucurbits, which include cantaloupe, honeydew and watermelon as well as cucumbers and squash, occurs every year in Arizona. Moderate temperatures and relative humidity, succulent plant growth and reduced light intensity are factors that favor the development of powdery mildew, which is caused by the pathogenic fungus Sphaerotheca fuliginea Potential new fungicides were evaluated and compared to existing chemicals for control of powdery mildew of cantaloupe in a field trial conducted in the spring of 1997 at the Yuma Agricultural Center. The top performer in this study for disease control as well as reduction in culled fruit was a combination of Topsin-M + Trilogy. Other effective materials included BAS 490, Quadris, Procure, Benlate, Microthiol Special and Rally. Bayleton significantly reduced the amount of culled fruit, but did not significantly reduce the severity of powdery mildew. Compared to nontreated plots, a gain of up to $973 per acre could have been realized due to the reduction in amount of culled fruit in plots treated with fungicides. The potential availability of new chemistries for management of powdery mildew of cantaloupe and other cucurbits could help in the implementation of fungicide resistance management strategies, which strive to minimize the risk of resistance development by the pathogen to these compounds.

Cantaloupe growth was influenced by using imidacloprid (Admire®) insecticide to control, suppress, or reduce whiteflies. The growth rate of cantaloupe was evaluated at regular intervals after crop emergence and a rate response was observed with greater growth with respect to increase in Admire® rate. Following at planting time applications, at 3 and 4 weeks after treatment (WAT) cantaloupe plants had more foliar growth and a greater number of leaves with increasing Admire® rate. At 5 to 8 WAT, cantaloupe vines exhibited greater growth with increasing rates of Admire®.

In recent years, due to the increasing number of produce-related outbreaks, greater attention has been given to interventions that remove human pathogens on fresh produce. Survival of Salmonella Poona on the surface and stem scar portions of inoculated cantaloupe, effect of chlorine or lactic acid or ozone on the survival of bacteria, transfer of pathogen from the rind to the fresh-cut tissue during cutting and growth and survival of Salmonella Poona on the fresh-cut tissues during 15 days of refrigerated storage were investigated. Preliminary studies were conducted to confirm that the rifampicin-resistant strain used in the study was indistinguishable from the parent strain of Salmonella Poona. Growth curve, heat tolerance and lactic acid resistance studies were performed, all of which showed no differences in behavior between the organisms. Cantaloupes were immersed in an inoculum containing rifampicicn-resistant strain of Salmonella Poona (107 CFU/ml) for 3 min and then dried for 12 h. The inoculated melons were washed with chlorine (200 ppm) for 3 min or lactic acid (2%) for 2 min or ozone (30 ppm) for 5 min and fresh cut tissues were prepared by peeling the rind and cutting into pieces or cutting the melon and removing the rind. Results obtained indicate that the levels of Salmonella Poona recovered were higher when the sample was obtained from the scar portion than the surface. Surface treatment with tap water or chlorine did not reduce Salmonella Poona. However treatment with lactic acid or ozone reduced the levels by 2.5 and 2.3 log10 CFU/cm2 respectively on the surface. Fresh-cut tissue prepared from melons sanitized with lactic acid resulted in less transfer during cutting and reached below detectable limits after 9 days of refrigerated storage. Cutting melons after peeling the rind was found effective in reducing the transfer of Salmonella Poona into the tissue in comparison with cutting of melons and removing the rind later. Thus these data suggest that treatment with lactic acid and ozone may be effective in reducing Salmonella from the surface of the cantaloupe where as lactic acid was effective in reducing the transfer from the surface to the flesh.

Center for Disease Control and Food and Drug Administration reports indicate that cantaloupe is one of the five most likely fruits and vegetables to cause a foodborne disease outbreak. Cantaloupe is a potential hazardous food based on the FDA food code since it is capable of supporting pathogen growth due to its low acidity and high moisture content. The objectives of this study were to determine the effect of strain and temperature on growth and biofilm formation of L. monocytogenes and Salmonella spp. in cantaloupe flesh and peel extracts on different food-contact processing surfaces. Growth of L. monocytogenes and Salmonella strains was greater in high cantaloupe flesh and peel extract concentration at 22°C and 10°C. In 50 mg/ml of cantaloupe flesh or peel extract, the cell numbers of L. monocytogenes and Salmonella increased by 5.0-5.5 log CFU/ml in 40 h at 22°C and 1-3.5 log CFU/ml in 72 h at 10°C. In 2 mg/ml of cantaloupe flesh or peel extract, the cell numbers of L. monocytogenes and Salmonella increased by 4.0-4.5 log CFU/ml in 72 h at 22°C but no change in log CFU/ml in 72 h at 10°C. There were no differences (P ˃ 0.05) among L. monocytogenes orSalmonella strains for biofilm formation in cantaloupe extracts, but biofilm formation was greater (P < 0.05) at high temperature and high cantaloupe flesh or peel extract concentration. In 50 mg/ml cantaloupe flesh or peel extract, L. monocytogenes and Salmonella produced biofilms of 7 log CFU/coupon in 4 days at 22°C and 4-5 log CFU/coupon in 7 days at 10°C. In 2 mg/ml cantaloupe flesh or peel extract, L. monocytogenes and Salmonella produced biofilms of 5-6 log CFU/coupon in 4 days at 22°C and 3-4 log CFU/coupon in 7 days at 10°C. L. monocytogenes and Salmonella spp. formed less biofilms (P < 0.05) on buna-n rubber when compared to stainless steel, polyethylene and polyurethane surfaces. These findings indicate that a very low concentration of nutrients that are leaked from cantaloupe flesh or peel can induce growth and biofilm formation in L. monocytogenes and Salmonella spp. on different food-contact surfaces.

No description available.

Six mulches were compared to no mulch on cantaloupes at Yuma in the Spring of 1996. The IRT film and black mulches caused "Mission" cantaloupes to produce significantly higher early yields than white mulch or no mulch. Silver mulch gave good early and total yields. All mulches seemed to favor total production but in this test differences for total yields between mulched and non-mulched plots were not significant.

Currently, the information available concerning requirements for optimum crop growth and development, dry matter production, and nutrient uptake and partitioning for Cantaloupes and New Mexico chile type cultivars is limited. Such information is required to predict and identify critical stages of growth in order to develop efficient nutrient management programs for these crops. The goals of this dissertation are: 1) to obtain general irrigated cantaloupe and New Mexico chile plants development models as a function of heat units accumulated after planting (HUAP), and 2) to determine dry matter production and nutrient uptake and partitioning patterns of these crops as a function of HUAP. Four primary investigations are presented in this dissertation. In the first and second studies, plant development models for irrigated cantaloupe and New Mexico chile-type cultivars were obtained. For cantaloupe plants, early bloom occurred at 265 ± 47 HUAP, early fruit set at 381 ± 51 HUAP, early netting at 499 ± 63 HUAP, and physiological maturity at 746 ± 66 HUAP. For chile plants, first bloom occurred at 530 ± 141 HUAP, early bloom at 750 ± 170 HUAP, peak bloom at 1006 ± 145 HUAP, first green chile harvest at 1329 ± 120 HUAP, and red harvest stage at 1798 ± 58 HUAP. Also, these studies revealed that beyond the early netting stage (approximately 499 HUAP), cantaloupe fruits were the strongest sinks for dry matter accumulation. For chile plants, between the first green chile harvest and red chile harvest stages (approximately at 1550 HUAP), chile pods developed into stronger sinks for dry matter accumulation. The third and fourth investigations revealed that the period of maximum nutrient uptake coincides with that of maximum dry matter accumulation for both crops. The overall total nutrient uptake of N, P, K, Ca, Mg, S, B, Zn, Mn, Fe, and Cu for cantaloupe plants was 138, 21, 213, 132, 29, 28, 0.17, 0.20, 0.13, 2.0, and 0.06 kg ha⁻¹, for chile plants, the overall total nutrient was 216, 20, 292, 117, 56, 28, 0.31, 0.20, 0.31, 1.6 and 0.14 kg ha⁻¹ for these nutrients respectively.

ANSELMO, Francisca Deuzenir Marques. Qualidade e conservação pós-colheita de melão Cantaloupe "Torreon" para exportação. 2007. 77 f. : Dissertação (mestrado) - Universidade Federal do Ceará, Centro de Ciências Agrárias, Departamento de Tecnologia de Alimentos, Fortaleza-CE, 2007 / Submitted by Nádja Goes (nmoraissoares@gmail.com) on 2016-06-06T12:07:44Z No. of bitstreams: 1 2007_dis_fdmanselmo.rar: 398013 bytes, checksum: b7aba98b3ca54962a6c9f9e42377901f (MD5) / Approved for entry into archive by Nádja Goes (nmoraissoares@gmail.com) on 2016-06-06T12:08:11Z (GMT) No. of bitstreams: 1 2007_dis_fdmanselmo.rar: 398013 bytes, checksum: b7aba98b3ca54962a6c9f9e42377901f (MD5) / Made available in DSpace on 2016-06-06T12:08:11Z (GMT). No. of bitstreams: 1 2007_dis_fdmanselmo.rar: 398013 bytes, checksum: b7aba98b3ca54962a6c9f9e42377901f (MD5) Previous issue date: 2007 / It was evaluated useful life postharvest Cantaloupe melons, hybrid `Torreon', submitted to the application postharvest of 1-MCP at different concentrations (0, 300 and 600 ppb) and two periods of exposition to the gas (6 and 12 hours),harvested in two different stadiums of maturation (50 and 75% stalk abscission layer) kept in storage cooled during 21 days and 28 days, aiming at exportation. The fruits were harvested in farms at Mossoró, RN-Brazil, being analyzed in the Laboratories of Physiology and Technology Postharvest of the Embrapa Tropical Agroindústria and of Tropical Fruits of the Department of Food Technology of the Federal University of the Ceará, in Fortaleza-CE. For the monitoring of the quality of the fruits during storage, its physical characterization how much to the loss of accumulated mass and external and internal firmness beyond visual evaluation acceptance second scale was made notes; in this scale if external color attributes to relative notes á, firmness, incidence of podridões and general appearance. Physical chemical analysis were performed of total chlorophyll content, soluble sugars, reducing sugars, totals carotenoids, coloration of the pulp, total soluble solid content, totals acidity (AT) and pH. According to visual evaluation, the application of the 1-MCP delayed the loss of firmne ss and green coloration of the fruits, as well as the incidence of rottenness. The maintenance of the firmness was confirmed through analyzes physical in the device texturometer. Fruits dealt with 1-MCP had presented greater firmness of that the fruits have controlled and this result was more effective with the increase of the dosage. / Avaliou-se a vida útil pós-colheita de melões Cantaloupe, híbrido ‘Torreon’, submetidos à aplicação pós-colheita de 1-MCP em diferentes concentrações (0, 300 e 600 ppb) e dois períodos distintos de exposição ao gás (6 e 12 horas), colhidos em dois diferentes estádios de maturação (50 e 75% de rachadura do pedúnculo) mantidos em armazenamento refrigerado durante 21 dias e 28 dias, visando exportação. Os frutos foram colhidos em fazendas de Mossoró, RN-Brasil, sendo analisados nos Laboratórios de Fisiologia e Tecnologia Pós-colheita da Embrapa Agroindústria Tropical e de Frutos Tropicais do Departamento de Tecnologia de Alimentos da Universidade Federal do Ceará, em Fortaleza- CE. Para o monitoramento da qualidade dos frutos durante a armazenagem, determinações quanto à perda de massa acumulada e firmeza externa e interna foram efetuadas, além de avaliação visual de aceitação segundo escala de notas; onde se atribui notas relativas á cor externa, firmeza, incidência de podridões e aparência geral. Foram realizadas as análises físico-químicas de clorofila total, açúcares solúveis totais, açúcares redutores, carotenóides totais, coloração da polpa, conteúdo de sólidos solúveis totais, acidez total (AT) e pH. Segundo a avaliação visual, a aplicação do 1-MCP retardou a perda de firmeza e de coloração verde dos frutos, bem como a incidência de podridões. A manutenção da firmeza foi confirmada através da analise em texturômetro. Frutos tratados com 1-MCP apresentaram maior firmeza do que os frutos controle e esse resultado foi mais efetivo com o aumento da dosagem.

FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico / Avaliou-se a vida Ãtil pÃs-colheita de melÃes Cantaloupe, hÃbrido âTorreonâ, submetidos à aplicaÃÃo pÃs-colheita de 1-MCP em diferentes concentraÃÃes (0, 300 e 600 ppb) e dois perÃodos distintos de exposiÃÃo ao gÃs (6 e 12 horas), colhidos em dois diferentes estÃdios de maturaÃÃo (50 e 75% de rachadura do pedÃnculo) mantidos em armazenamento refrigerado durante 21 dias e 28 dias, visando exportaÃÃo. Os frutos foram colhidos em fazendas de MossorÃ, RN-Brasil, sendo analisados nos LaboratÃrios de Fisiologia e Tecnologia PÃs-colheita da Embrapa AgroindÃstria Tropical e de Frutos Tropicais do Departamento de Tecnologia de Alimentos da Universidade Federal do CearÃ, em Fortaleza- CE. Para o monitoramento da qualidade dos frutos durante a armazenagem, determinaÃÃes quanto à perda de massa acumulada e firmeza externa e interna foram efetuadas, alÃm de avaliaÃÃo visual de aceitaÃÃo segundo escala de notas; onde se atribui notas relativas à cor externa, firmeza, incidÃncia de podridÃes e aparÃncia geral. Foram realizadas as anÃlises fÃsico-quÃmicas de clorofila total, aÃÃcares solÃveis totais, aÃÃcares redutores, carotenÃides totais, coloraÃÃo da polpa, conteÃdo de sÃlidos solÃveis totais, acidez total (AT) e pH. Segundo a avaliaÃÃo visual, a aplicaÃÃo do 1-MCP retardou a perda de firmeza e de coloraÃÃo verde dos frutos, bem como a incidÃncia de podridÃes. A manutenÃÃo da firmeza foi confirmada atravÃs da analise em texturÃmetro. Frutos tratados com 1-MCP apresentaram maior firmeza do que os frutos controle e esse resultado foi mais efetivo com o aumento da dosagem. / It was evaluated useful life postharvest Cantaloupe melons, hybrid `Torreon', submitted to the application postharvest of 1-MCP at different concentrations (0, 300 and 600 ppb) and two periods of exposition to the gas (6 and 12 hours),harvested in two different stadiums of maturation (50 and 75% stalk abscission layer) kept in storage cooled during 21 days and 28 days, aiming at exportation. The fruits were harvested in farms at MossorÃ, RN-Brazil, being analyzed in the Laboratories of Physiology and Technology Postharvest of the Embrapa Tropical AgroindÃstria and of Tropical Fruits of the Department of Food Technology of the Federal University of the CearÃ, in Fortaleza-CE. For the monitoring of the quality of the fruits during storage, its physical characterization how much to the loss of accumulated mass and external and internal firmness beyond visual evaluation acceptance second scale was made notes; in this scale if external color attributes to relative notes Ã, firmness, incidence of podridÃes and general appearance. Physical chemical analysis were performed of total chlorophyll content, soluble sugars, reducing sugars, totals carotenoids, coloration of the pulp, total soluble solid content, totals acidity (AT) and pH. According to visual evaluation, the application of the 1-MCP delayed the loss of firmne ss and green coloration of the fruits, as well as the incidence of rottenness. The maintenance of the firmness was confirmed through analyzes physical in the device texturometer. Fruits dealt with 1-MCP had presented greater firmness of that the fruits have controlled and this result was more effective with the increase of the dosage.