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Journal articles on the topic 'Wetness duration'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Henshall, W. R., R. M. Beresford, R. W. Chynoweth, and P. Ramankutty. "Comparing surface wetness inside and outside grape canopies for regionwide assessment of plant disease risk." New Zealand Plant Protection 58 (August 1, 2005): 80–83. http://dx.doi.org/10.30843/nzpp.2005.58.4258.

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Wetness duration measured by flat plate sensors inside and outside a grape canopy was recorded from DecemberMarch Sensors outside the canopy generally recorded longer wetness duration than sensors inside the canopy For days with rain short wetness durations detected by outside sensors were not detected by inside sensors because of sheltering by the canopy When wetness arose solely from dew duration inside was much shorter than outside for prolonged wet periods Wetness was used to calculate infection periods according to two botrytis bunch rot risk models Agreement between sensors was worse ins

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2

Cardoso, Cinara Araújo de Andrade, Erlei Melo Reis, and Eder Novaes Moreira. "Development of a warning system for wheat blast caused by Pyricularia grisea." Summa Phytopathologica 34, no. 3 (2008): 216–21. http://dx.doi.org/10.1590/s0100-54052008000300002.

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Wheat (Triticum aestivum L.) blast caused by Pyricularia grisea is a new disease in Brazil and no resistant cultivars are available. The interactions between temperature and wetness durations have been used in many early warning systems. Hence, growth chamber experiments to assess the effect of different temperatures (10, 15, 20, 25, 30 and 35ºC) and the duration of spike-wetness (0, 5, 10, 15, 20, 25, 30, 35 and 40 hours) on the intensity of blast in cultivar BR23 were carried out. Each temperature formed an experiment and the duration of wetness the treatments. The highest blast intensity wa

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3

Villalta, O. N., W. S. Washington, G. M. Rimmington, and P. A. Taylor. "Effects of temperature and leaf wetness duration on infection of pear leaves by Venturia pirina." Australian Journal of Agricultural Research 51, no. 1 (2000): 97. http://dx.doi.org/10.1071/ar99068.

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The effects of temperature and wetness duration on the infection of pear leaves (Pyrus communis L.) by Venturia pirina were studied by inoculating plants with ascospores and conidia under controlled conditions and in the field. Under controlled inoculations, minimum wetness durations that lead to leaf infections by ascospores were 27, 15, 13, 11, 10, 9, and 9 h at 4, 8, 10, 12, 15, 20, and 25°C, respectively. In parallel inoculations with conidia, the minimum wetness durations that lead to leaf infections were similar to ascospores at temperatures between 12°C and 25°C, but at lower temperatur

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4

Henshall, W. R., G. N. Hill, and R. M. Beresford. "Comparison of measured and modelled wetness duration as inputs to a grape disease model." New Zealand Plant Protection 68 (January 8, 2015): 405–10. http://dx.doi.org/10.30843/nzpp.2015.68.5819.

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Measured surface wetness duration is often used in disease risk prediction models but is only available from a few weather stations Wetness can be modelled from more widely available weather station networks using other meteorological variables This study compared wetness duration measured using different methods of interpreting wetness sensor output and from different sensor types with wetness calculated from a classification and regression tree (CART) model The model calculated wetness from temperature relative humidity and wind speed Different wetness sensors and different wetness calculati

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5

Uddin, W., K. Serlemitsos, and G. Viji. "A Temperature and Leaf Wetness Duration-Based Model for Prediction of Gray Leaf Spot of Perennial Ryegrass Turf." Phytopathology® 93, no. 3 (2003): 336–43. http://dx.doi.org/10.1094/phyto.2003.93.3.336.

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Gray leaf spot is a serious disease of perennial ryegrass (Lolium perenne), causing severe epidemics in golf course fairways. The effects of temperature and leaf wetness duration on the development of gray leaf spot of perennial ryegrass turf were evaluated in controlled environment chambers. Six-week-old Legacy II ryegrass plants were inoculated with an aqueous conidial suspension of Pyricularia grisea (approximately 8 × 104 conidia per ml of water) and subjected to four different temperatures (20, 24, 28, and 32°C) and 12 leaf wetness durations (3 to 36 h at 3-h intervals). Three days after

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6

Rao, P. S., T. J. Gillespie, and A. W. Schaafsma. "Estimating wetness duration on maize ears from meteorological observations." Canadian Journal of Soil Science 78, no. 1 (1998): 149–54. http://dx.doi.org/10.4141/s97-012.

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The onset and cessation of surface wetness on maize ears were simulated with six models, using hourly meteorological data, to examine the linkage between wetness duration and possible forecasting of fungal infections that produce mycotoxins. Two threshold models (using relative humidity and dew point temperature), one regression model (using humidity and wind speed), and three physical models based on the energy balance approach, were compared. Also, spatial and temporal variability in wetness duration was measured and simulated at three sites located at distances up to 29 km from a central we

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7

Carisse, O., G. Bourgeois, and J. A. Duthie. "Influence of Temperature and Leaf Wetness Duration on Infection of Strawberry Leaves by Mycosphaerella fragariae." Phytopathology® 90, no. 10 (2000): 1120–25. http://dx.doi.org/10.1094/phyto.2000.90.10.1120.

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In controlled environment studies, the influence of temperature and wetness duration on infection of strawberry leaves by Mycosphaerella fragariae was quantified by inoculating plants with a conidial suspension and incubating them at various combinations of temperature (5 to 35°C) and leaf wetness duration (0 to 96 h). Infection was expressed as the number of lesions per square centimeter of leaf surface and relative infection was used to develop an infection model. Younger leaves were more susceptible to infection. Regardless of temperature and duration of leaf wetness, only few lesions devel

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8

Carisse, Odile, Audrey Levasseur, and Caroline Provost. "Influence of Leaf Wetness Duration and Temperature on Infection of Grape Leaves by Elsinoë ampelina under Controlled and Vineyard Conditions." Plant Disease 104, no. 11 (2020): 2817–22. http://dx.doi.org/10.1094/pdis-02-20-0262-re.

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On susceptible varieties, indirect damage to vines infected by Elsinoë ampelina range from reduced vigor to complete defoliation while, on berries, damage ranges from reduced quality to complete yield loss. Limited knowledge about the relationship between weather conditions and infection makes anthracnose management difficult and favors routine application of fungicides. The influence of leaf wetness duration and temperature on infection of grape leaves by E. ampelina was studied under both controlled and vineyard conditions. For the controlled conditions experiments, the five youngest leaves

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9

Makowski, D., R. Bancal, and A. Vicent. "Estimation of Leaf Wetness Duration Requirements of Foliar Fungal Pathogens with Uncertain Data—An Application to Mycosphaerella nawae." Phytopathology® 101, no. 11 (2011): 1346–54. http://dx.doi.org/10.1094/phyto-01-11-0024.

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Wetness of the host surface is a critical environmental factor for the development of foliar fungal diseases, but it is difficult to estimate the wetness durations required by pathogens for infection when only few experimental data are available. In this paper, we propose a method to estimate wetness duration requirements of foliar fungal pathogens when precise experimental data are not available. The proposed method is based on approximate Bayesian computation. It only requires lower and upper bounds of wetness duration requirements for one or fewer temperatures. We describe the method, show

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10

Furuya, Hiromitsu, Hiroyuki Takanashi, Shin-ichi Fuji, Yoshio Nagai, and Hideki Naito. "Modeling Infection of Spring Onion by Puccinia allii in Response to Temperature and Leaf Wetness." Phytopathology® 99, no. 8 (2009): 951–56. http://dx.doi.org/10.1094/phyto-99-8-0951.

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The influence of temperature and leaf wetness duration on infection of spring onion (Japanese bunching onion) leaves by Puccinia allii was examined in controlled-environment experiments. Leaves of potted spring onion plants (Allium fistulosum cv. Yoshikura) were inoculated with urediniospores and exposed to 6.5, 10, 15, 22, or 27 h of wetness at 5, 10, 15, 20, or 25°C. The lesion that developed increased in density with increasing wetness duration. Relative infection was modeled as a function of both temperature and wetness duration using the modified version of Weibull's cumulative distributi

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11

Monroe, J. S., J. B. Santini, and R. Latin. "A Model Defining the Relationship Between Temperature and Leaf Wetness Duration, and Infection of Watermelon by Colletotrichum orbiculare." Plant Disease 81, no. 7 (1997): 739–42. http://dx.doi.org/10.1094/pdis.1997.81.7.739.

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Controlled environment experiments were conducted to determine the relationship between temperature, leaf wetness duration, and infection of watermelon by Colletotrichum orbiculare. Flats of watermelon seedlings were inoculated and exposed to various combinations of temperature (12, 15, 18, 21, 24, 27, and 30°C) and leaf wetness duration (2, 4, 8, 12, 16, and 24 h). The experimental design was a split-plot, with whole units represented by temperature and subunits represented by leaf wetness duration. Anthracnose incidence, defined as the percentage of symptomatic seedlings in each flat 10 days

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12

Magarey, R. D., J. M. Russo, R. C. Seem, and D. M. Gadoury. "Surface wetness duration under controlled environmental conditions." Agricultural and Forest Meteorology 128, no. 1-2 (2005): 111–22. http://dx.doi.org/10.1016/j.agrformet.2004.07.017.

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13

Zito, S., T. Castel, Y. Richard, M. Rega, and B. Bois. "Optimization of a leaf wetness duration model." Agricultural and Forest Meteorology 291 (September 2020): 108087. http://dx.doi.org/10.1016/j.agrformet.2020.108087.

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14

Wang, Bing, Bao-Hua Li, Xiang-Li Dong, Cai-Xia Wang, and Zhen-Fang Zhang. "Effects of Temperature, Wetness Duration, and Moisture on the Conidial Germination, Infection, and Disease Incubation Period of Glomerella cingulata." Plant Disease 99, no. 2 (2015): 249–56. http://dx.doi.org/10.1094/pdis-04-14-0361-re.

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Glomerella leaf spot (GLS) caused by Glomerella cingulata is a newly emergent disease that results in severe defoliation and fruit spots. Currently, GLS is not effectively controlled in China due to a lack of understanding of its epidemiology. Therefore, the effects of temperature, wetness duration, and moisture on conidial germination, infection, and the disease incubation period of GLS were examined by inoculating cv. Gala apple leaves with a conidial suspension and performing in vitro germination assays. Conidia could germinate and form appressoria at temperatures ranging from 5 to 35°C, wi

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15

Erincik, O., L. V. Madden, D. C. Ferree, and M. A. Ellis. "Temperature and Wetness-Duration Requirements for Grape Leaf and Cane Infection by Phomopsis viticola." Plant Disease 87, no. 7 (2003): 832–40. http://dx.doi.org/10.1094/pdis.2003.87.7.832.

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In 1998 and 1999, controlled-environment studies were conducted in growth chambers to determine the temperature and wetness-duration parameters required for leaf and cane infection of grape by Phomopsis viticola. Greenhouse-grown ‘Catawba’ (Vitis labrusca) and ‘Seyval’ (French hybrid) grapes were inoculated with P. viticola and incubated at constant temperatures of 5, 10, 15, 20, 25, 30, and 35°C and at wetness durations of 5, 10, 15, and 20 h for each temperature. Data from each cultivar were analyzed by nonlinear regression analysis to determine the relationship between disease severity and

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16

Brand, Silvane Isabel, Arno Bernardo Heldwein, Sidinei Zwick Radons, Jocélia Rosa da Silva, and Andressa Janaína Puhl. "Severity of Septoria Leaf Spot and Sunflower Yield Due to Leaf Wetness Duration." Journal of Agricultural Science 10, no. 10 (2018): 178. http://dx.doi.org/10.5539/jas.v10n10p178.

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The objective of this study was to evaluate the effect of leaf wetness on the severity of septoria leaf spot in sunflower. The experiments were performed in two sowing dates in November and January in Santa Maria, RS. Sunflower inoculation was carried out with the Septoria helianthi isolate, with subsequent assessment of disease severity, progress and cypsela yield. The treatments were composed of different periods of 0, 8, 12, 16, 20, 24, 28 and 32 hours of artificially applied leaf wetness. Variables influencing the disease were observed during the cycle, such as mean air temperature, mean r

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17

Neufeld, K. N., and P. S. Ojiambo. "Interactive Effects of Temperature and Leaf Wetness Duration on Sporangia Germination and Infection of Cucurbit Hosts by Pseudoperonospora cubensis." Plant Disease 96, no. 3 (2012): 345–53. http://dx.doi.org/10.1094/pdis-07-11-0560.

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Outbreaks of cucurbit downy mildew caused by Pseudoperonospora cubensis are dependent on the weather but effects of temperature and leaf wetness duration on infection have not been studied for different cucurbits. To determine the effects of these two weather variables on sporangia germination and infection of cucurbit host types by P. cubensis, three host types; cucumber (‘Straight 8’), cantaloupe (‘Kermit’), and acorn squash (‘Table Queen’), were inoculated and exposed to leaf wetness durations of 2 to 24 h at six constant temperatures ranging from 5 to 30°C in growth-chamber experiments. Sp

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18

Rowlandson, Tracy, Mark Gleason, Paulo Sentelhas, Terry Gillespie, Carla Thomas, and Brian Hornbuckle. "Reconsidering Leaf Wetness Duration Determination for Plant Disease Management." Plant Disease 99, no. 3 (2015): 310–19. http://dx.doi.org/10.1094/pdis-05-14-0529-fe.

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Relationships between leaf wetness and plant diseases have been studied for centuries. The progress and risk of many bacterial, fungal, and oomycete diseases on a variety of crops have been linked to the presence of free water on foliage and fruit under temperatures favorable to infection. Whereas the rate parameters for infection or epidemic models have frequently been linked with temperature during the wet periods, leaf wetness periods of specific time duration are necessary for the propagule germination of most phytopathogenic fungi and for their penetration of plant tissues. Using these ty

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19

Luo, Yong, and Themis J. Michailides. "Factors Affecting Latent Infection of Prune Fruit by Monilinia fructicola." Phytopathology® 91, no. 9 (2001): 864–72. http://dx.doi.org/10.1094/phyto.2001.91.9.864.

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Experiments were conducted in three prune orchards in California. In each orchard, inoculations with Monilinia fructicola, the causal agent of brown rot of stone fruits, were performed on branches of trees at bloom and fruit developmental stages. Five inoculum concentrations were used in each inoculation. Six and four wetness durations were created for each inoculum concentration at bloom and fruit developmental stages, respectively. Fruit were harvested 3 weeks before commercial harvest. The overnight freezing incubation technique was used to promote sporulation and to determine incidence of

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20

Brown, JS. "Definition of infection period for field infection of scald in Victoria." Australian Journal of Agricultural Research 42, no. 5 (1991): 811. http://dx.doi.org/10.1071/ar9910811.

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Conditions suitable for infection of barley with Rhynchosporium secalis were determined by exposing seedlings to inoculum from scald-infected barley plants growing in the field. Maximum infection occurred when the duration of leaf surface wetness was c. 12 h and the average temperature during those periods was c. 6�C. On this basis potential infection periods were defined as periods of leaf surface wetness of >12 h duration with an average temperature of >6�C during the period. Meterological records indicated that during the 1983-89 growing seasons there was an average of 91 periods of l

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21

Hartman, J. R., L. Parisi, and P. Bautrais. "Effect of Leaf Wetness Duration, Temperature, and Conidial Inoculum Dose on Apple Scab Infections." Plant Disease 83, no. 6 (1999): 531–34. http://dx.doi.org/10.1094/pdis.1999.83.6.531.

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Apple seedlings (2 months old, ‘Idared’ × ‘Golden Delicious’) were inoculated with conidia of Venturia inaequalis in order to study the effects of inoculum dose and leaf wetness duration on development of apple scab symptoms. For each experiment, the C3 curve (indicating heavy infection levels) was used as the basis for relating infection to temperature and leaf wetness duration. In one series of experiments, seedlings were treated with inoculum doses of 1.5, 5.4, 15.6, 32.2, 81.2, and 250 × 103 conidia/ml and leaves were kept wet during C3 infection periods at temperatures of 6, 11, 16, and 2

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22

Green, S., G. Peng, T. Connolly, and S. M. Boyetchko. "Effect of Moisture and Temperature on Disease of Green Foxtail Caused by Drechslera gigantea and Pyricularia setariae." Plant Disease 88, no. 6 (2004): 605–12. http://dx.doi.org/10.1094/pdis.2004.88.6.605.

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Leaf wetness duration, temperature, intermittent leaf wetness, and delayed leaf wetness were investigated for their influence on disease of green foxtail caused by Drechslera gigantea and Pyricularia setariae to determine the potential of these two fungi as bioherbicide agents in the Canadian prairies. For both fungi, disease severity increased with increasing leaf wetness duration at 15, 20, 25, 30, and 32°C. At 10°C, conidia of both fungi showed minimal germination, regardless of leaf wetness duration; however, an increase in conidial germination, appressoria formation, and disease occurred

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23

Zhang, P. G., and J. C. Sutton. "Effects of wetness duration, temperature, and light on infection of black spruce seedlings by Botrytiscinerea." Canadian Journal of Forest Research 24, no. 4 (1994): 707–13. http://dx.doi.org/10.1139/x94-094.

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Postinoculation wetness duration, temperature, and light conditions were investigated in relation.to infection of container-grown seedlings of black spruce (Piceamariana (Mill.) B.S.P) by Botrytiscinerea Pers.:Fr. Seedlings were predisposed to the pathogen by treatment at 35 ± 1 °C in darkness for 4 days immediately before inoculation, and infection was assessed indirectly by estimating sporulation incidence of the pathogen on 6-mm segments of the needles. Sporulation incidence was zero when the temperature during 32 h of the postinoculation wetness was 1, 4, and 36 °C, about 7–10% at 12 °C, 4

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24

Huber, L., and B. Itier. "Leaf wetness duration in a field bean canopy." Agricultural and Forest Meteorology 51, no. 3-4 (1990): 281–92. http://dx.doi.org/10.1016/0168-1923(90)90113-k.

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25

Bass, B., I. Savdie, and T. J. Gillespie. "Simulation of leaf wetness duration for field corn." Agricultural and Forest Meteorology 57, no. 1-3 (1991): 69–84. http://dx.doi.org/10.1016/0168-1923(91)90079-6.

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26

Chungu, C., J. Gilbert, and F. Townley-Smith. "Septoria tritici Blotch Development as Affected by Temperature, Duration of Leaf Wetness, Inoculum Concentration, and Host." Plant Disease 85, no. 4 (2001): 430–35. http://dx.doi.org/10.1094/pdis.2001.85.4.430.

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The effects of incubation temperature, leaf-wetness duration, inoculum concentration, and interaction between leaf-wetness duration and inoculum concentration on the development of Septoria tritici blotch were evaluated at the seedling stage in two bread wheats (Katepwa and 6 Lacos-78) and two durum wheats (AC Melita and Kyle). The study was conducted to assess if bread and durum cultivars widely grown in Manitoba and a resistant cultivar from South America react differently to the disease at temperatures characteristic of Manitoba summers, and to obtain information on conditions that would be

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27

Gleason, Mark L., Sharon K. Parker, Ron E. Pitblado, et al. "Validation of a Commercial System for Remote Estimation of Wetness Duration." Plant Disease 81, no. 7 (1997): 825–29. http://dx.doi.org/10.1094/pdis.1997.81.7.825.

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To assess the accuracy of remote, real-time mathematical simulations of wetness duration and air temperature, hourly measurements of wetness duration and air temperature at 18 sites in the United States and Canada from May to September 1995 were compared with simulations for these sites provided by SkyBit, Inc. SkyBit simulations of mean, maximum, and minimum daily air temperatures varied from on-site measurements by less than 0.7°C but underestimated the duration of wet periods by an average of 3.4 h/day. At five of six stations tested, SkyBit underestimates of wetness duration were significa

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28

Gross, M. K., J. B. Santini, I. Tikhonova, and R. Latin. "The Influence of Temperature and Leaf Wetness Duration on Infection of Perennial Ryegrass by Rhizoctonia solani." Plant Disease 82, no. 9 (1998): 1012–16. http://dx.doi.org/10.1094/pdis.1998.82.9.1012.

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Controlled environment experiments were conducted to determine the influence of temperature and leaf wetness duration on infection of perennial ryegrass by Rhizoctonia solani. Infection of grass plants raised in pots and exposed to mycelium of R. solani was evaluated at various combinations of temperature and leaf wetness duration. Temperatures included 15, 18, 21, 24, and 27°C. Leaf wetness periods were 9, 12, 15, 18, and 24 h. Disease was most severe (more than 50 leaves with brown patch lesions per pot) when plants were in contact with the inoculum source for 24 h of leaf wetness at 24°C. T

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29

HOLLEY, J. D., R. HALL, and G. HOFSTRA. "EFFECTS OF CULTIVAR RESISTANCE, LEAF WETNESS DURATION AND TEMPERATURE ON RATE OF DEVELOPMENT OF POTATO EARLY BLIGHT." Canadian Journal of Plant Science 65, no. 1 (1985): 179–84. http://dx.doi.org/10.4141/cjps85-024.

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Regression models were developed from field observations over three seasons in Ontario, to relate apparent infection rate (Y) of early blight, caused by Alternaria solani Sorauer, on three potato cultivars, Kennebec, Chieftain, and Norchip, to leaf wetness duration (W) and air temperature (T). Among regression equations of the form Y = a + bW + cT + dWT or Y = a + bW, cultivar-specific equations accounted for more variability in Y than equations derived from all cultivars. In all-cultivar equations and cultivar-specific equations, W accounted for 85%–89% of the variability in Y. Therefore, cul

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Sullivan, M. J., J. P. Damicone, and M. E. Payton. "The Effects of Temperature and Wetness Period on the Development of Spinach White Rust." Plant Disease 86, no. 7 (2002): 753–58. http://dx.doi.org/10.1094/pdis.2002.86.7.753.

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Experiments were conducted in controlled environments to determine the influence of temperature and duration of wetness on development of white rust of spinach. Plants of the susceptible cv. Kent were exposed to temperatures of 6 to 28°C and interrupted wetness periods that totaled 3 to 84 h following inoculation. Disease severity was assessed following further incubation in a greenhouse at 20 to 30°C. Disease was observed at all temperatures and increased with wetness duration. The optimum temperature for disease development ranged from 12 to 18°C. Only 3 h of wetness were required for diseas

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Moral, Juan, José Jurado-Bello, M. Isabel Sánchez, Rodrígues de Oliveira, and Antonio Trapero. "Effect of Temperature, Wetness Duration, and Planting Density on Olive Anthracnose Caused by Colletotrichum spp." Phytopathology® 102, no. 10 (2012): 974–81. http://dx.doi.org/10.1094/phyto-12-11-0343.

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The influence of temperature, wetness duration, and planting density on infection of olive fruit by Colletotrichum acutatum and C. simmondsii was examined in laboratory and field experiments. Detached olive fruit of ‘Arbequina’, ‘Hojiblanca’, and ‘Picual’ were inoculated with conidia of several isolates of the pathogen and kept at constant temperatures of 5 to 35°C in humid chambers. Similarly, potted plants and stem cuttings with fruit were inoculated and subjected to wetness periods of 0 to 48 h. Infection occurred at 10 to 25°C, and disease severity was greater and the mean latent period wa

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Leandro, L. F. S., M. L. Gleason, F. W. Nutter, S. N. Wegulo, and P. M. Dixon. "Influence of Temperature and Wetness Duration on Conidia and Appressoria of Colletotrichum acutatum on Symptomless Strawberry Leaves." Phytopathology® 93, no. 4 (2003): 513–20. http://dx.doi.org/10.1094/phyto.2003.93.4.513.

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Strawberry leaves (cv. Tristar) inoculated with Colletotrichum acuta-tum conidia were incubated at 10, 15, 20, 25, 30, and 35°C under continuous wetness, and at 25°C under six intermittent wetness regimes. The number of conidia and appressoria was quantified on excised leaf disks. In order to assess pathogen survival, inoculated leaves were frozen and incubated to induce acervular development. Germination, secondary3 conidiation, and appressorial development were significantly (P ≤ 0.05) affected by temperature and wetness treatments. Under continuous wetness, the optimum temperature range for

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33

Nita, M., M. A. Ellis, and L. V. Madden. "Effects of Temperature, Wetness Duration, and Leaflet Age on Infection of Strawberry Foliage by Phomopsis obscurans." Plant Disease 87, no. 5 (2003): 579–84. http://dx.doi.org/10.1094/pdis.2003.87.5.579.

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Temperature, leaf wetness, and leaflet age effects on infection of strawberry foliage by Phomopsis obscurans were examined in controlled-environment experiments. A mid-season (‘Honeoye’) and early-season (‘Earliglow’) cultivar were used. Tested temperatures were 10, 15, 20, 25, 30, and 35°C, and tested wetness periods were 5, 10, 15, 20, 25, and 35 h. Leaflets were labeled based on age: 0 to 1, 2 to 6, and 7 to 14 days old. Effects of temperature, wetness duration, and leaflet age on the logit of disease incidence and severity were quantified using a linear mixed model analysis of variance (AN

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Agostini, J. P., P. M. Bushong, Alka Bhatia, and L. W. Timmer. "Influence of Environmental Factors on Severity of Citrus Scab and Melanose." Plant Disease 87, no. 9 (2003): 1102–6. http://dx.doi.org/10.1094/pdis.2003.87.9.1102.

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Citrus scab, caused by Elsinoe fawcettii, and melanose, caused by Diaporthe citri, produce external blemishes on citrus fruit, reducing acceptability of the fruit for the fresh market. In laboratory studies, rough lemon seedlings and grapefruit seedlings were inoculated with conidia of E. fawcettii and D. citri, respectively, and exposed to a range of temperatures and durations of leaf wetness. Scab was most severe at temperatures from 23.5 to 27°C and much less severe at 17, 20, 30, or 32°C. A leaf wetness duration of 4 h was sufficient for some infection, but 12 h of leaf wetness were needed

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Marcuzzo, Leandro Luiz, and Carolina Maria Tomasoni. "Development of a weather-based forecasting model for Alternaria leaf blight of carrot." Summa Phytopathologica 45, no. 4 (2019): 413–14. http://dx.doi.org/10.1590/0100-5405/216538.

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ABSTRACT In the present study, under controlled conditions, the influence of temperature (10, 15, 20, 25 and 30°C) and leaf wetness duration (6, 12, 24 and 48 hours) was studied on the severity of Alternaria leaf blight of carrot caused by Alternaria dauci. The relative density of lesions was influenced by temperature and leaf wetness duration (P<0.05). The disease was more severe at the temperature of 25°C. Data underwent non-linear regression analysis. The generalized beta function was used for fitting the data on disease severity and temperature, while a logistic function was chosen to r

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Soares-Colletti, Ana Raquel, and Silvia de Afonseca Lourenço. "Effect of temperature, wetness duration and cultivar on the development of anthracnose in guava fruits." Summa Phytopathologica 40, no. 4 (2014): 307–12. http://dx.doi.org/10.1590/0100-5405/1988.

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The development of a large number of postharvest diseases is closely associated with fruit ripeness. Environmental conditions may affect both the pathogen development and the fruit ripening rate. The aim of this study was to determine the most favorable temperature and wetness duration to the development of anthracnose in guava fruits. Cultivars 'Kumagai' (white pulp) and 'Pedro Sato' (red pulp) were inoculated with a conidial suspension of Colletotrichum gloeosporioides and C. acutatum and incubated at constant temperature ranging from 10 to 35ºC and wetness duration of 6 and 24 hours. Diseas

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Jacobs, A. F. G., B. G. Heusinkveld, and G. J. T. Kessel. "Simulating of leaf wetness duration within a potato canopy." NJAS - Wageningen Journal of Life Sciences 53, no. 2 (2005): 151–66. http://dx.doi.org/10.1016/s1573-5214(05)80003-x.

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Cole, I. S., and W. D. Ganther. "Experimental determination of duration of wetness on metal surfaces." Corrosion Engineering, Science and Technology 43, no. 2 (2008): 156–62. http://dx.doi.org/10.1179/174327807x214554.

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Luo, Yong, Zhonghua Ma, and Themis J. Michailides. "Analysis of Factors Affecting Latent Infection and Sporulation of Monilinia fructicola on Prune Fruit." Plant Disease 85, no. 9 (2001): 999–1003. http://dx.doi.org/10.1094/pdis.2001.85.9.999.

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Two studies were conducted to determine the effects of water content (WC) on sporulation on thinned fruit and the effects of wetness duration, inoculum density, and temperature on secondary infection of prune fruit by Monilinia fructicola, the main causal pathogen of brown rot in California. In the first study, sporulation intensity and duration of sporulation of the pathogen were tested on inoculated thinned fruit with five levels (67.2, 53.8, 40.3, 26.9, and 13.4%) of WC. Regression analyses showed that both sporulation intensity and duration of sporulation increased as WC of thinned fruit i

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Evenhuis, A., B. Verdam, and J. G. N. Wander. "Crop management and anthracnose development in caraway (Carum carvi L.)." Netherlands Journal of Agricultural Science 47, no. 1 (1999): 29–49. http://dx.doi.org/10.18174/njas.v47i1.477.

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A reduction of leaf wetness duration was positively correlated (r2 = 0.71; P < 0.001) with a decrease in severity of anthracnose of caraway, caused by the fungus Mycocentrospora acerina. Lodging and higher plant density prolonged leaf wetness duration. Disease incidence and severity of anthracnose were reduced by crop management activities minimizing leaf wetness duration. Reduction of nitrogen levels reduced the risk of anthracnose development in spring and biennial caraway. Decreasing the sowing rate from 8 to 4 kg/ha resulted in a lower disease severity and an increase of seed yield in s

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Marcuzzo, Leandro Luiz, Roberto Haveroth, and Aline Nacimento. "Influence of temperature and leaf wetness duration in the severity of Cercospora leaf spot of beet." Summa Phytopathologica 42, no. 1 (2016): 89–91. http://dx.doi.org/10.1590/0100-5405/2111.

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ABSTRACT In the present study, the influence of temperature (15, 20, 25, 30 and 35°C) and leaf wetness period (6, 12, 24 and 48 hours) on the severity of Cercospora leaf spot of beet, caused by Cercospora beticola, was studied under controlled conditions. Lesion density was influenced by temperature and leaf wetness duration (P<0.05). Data were subjected to nonlinear regression analysis. The generalized beta function was used for fitting the disease severity and temperature data, while a logistic function was chosen to represent the effect of leaf wetness on the severity of Cercospora leaf

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Arauz, L. F., K. N. Neufeld, A. L. Lloyd, and P. S. Ojiambo. "Quantitative Models for Germination and Infection of Pseudoperonospora cubensis in Response to Temperature and Duration of Leaf Wetness." Phytopathology® 100, no. 9 (2010): 959–67. http://dx.doi.org/10.1094/phyto-100-9-0959.

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The influence of temperature and leaf wetness duration on germination of sporangia and infection of cantaloupe leaves by Pseudoperonospora cubensis was examined in three independent controlled-environment experiments by inoculating plants with a spore suspension and exposing them to a range of leaf wetness durations (2 to 24 h) at six fixed temperatures (5 to 30°C). Germination of sporangia was assessed at the end of each wetness period and infection was evaluated from assessments of disease severity 5 days after inoculation. Three response surface models based on modified forms of the Weibull

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Mueller, D. S., and J. W. Buck. "Effects of Light, Temperature, and Leaf Wetness Duration on Daylily Rust." Plant Disease 87, no. 4 (2003): 442–45. http://dx.doi.org/10.1094/pdis.2003.87.4.442.

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Experiments in controlled environments were completed to determine the influence of light intensity, temperature, and leaf wetness duration on daylily rust caused by Puccinia hemerocallidis. As light intensity increased, there was a significant decrease in urediniospore germination (R2 = 0.88 and Y = 96 - 0.6x). Urediniospores germinated in vitro between 7 and 34°C with an optimal temperature of 22 to 24°C. To test the effect of temperature on infection efficiency, plants were inoculated with urediniospores, incubated under high relative humidity at 4, 10, 22, 30, or 36°C, and then transferred

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González-Domínguez, E., V. Rossi, J. Armengol, and J. García-Jiménez. "Effect of Environmental Factors on Mycelial Growth and Conidial Germination of Fusicladium eriobotryae, and the Infection of Loquat Leaves." Plant Disease 97, no. 10 (2013): 1331–38. http://dx.doi.org/10.1094/pdis-02-13-0131-re.

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In Spain, loquat scab, caused by Fusicladium eriobotryae, is usually controlled by fungicides when there are favorable conditions for infection. Lacking specific data on the effect of weather conditions on infection by F. eriobotryae, infection periods are predicted based on the Mills table for apple scab. Experiments were conducted to determine the influence of temperature, wetness duration, relative humidity (RH), and dry periods on mycelial growth, conidial germination, and infection of loquat leaves by F. eriobotryae. F. eriobotryae was able to grow and the conidia to germinate in a wide r

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Chongo, G., and C. C. Bernier. "Effects of Host, Inoculum Concentration, Wetness Duration, Growth Stage, and Temperature on Anthracnose of Lentil." Plant Disease 84, no. 5 (2000): 544–48. http://dx.doi.org/10.1094/pdis.2000.84.5.544.

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The effects of concentration of conidia, duration of the wetness period, plant growth stage, and temperature on the development of anthracnose (Colletotrichum truncatum) on lentil (Lens culinaris) were assessed in growth-chamber and greenhouse studies using cv. Indianhead and line 458-57, which have partial resistance, and susceptible cv. Eston. Each genotype was assessed for incubation period (IP), latent period (LP), number of lesions (LN) per stem, and disease severity (DS). Both IP and LP decreased linearly with increasing conidial concentration, wetness duration, and temperature. Both IP

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Arauz, L. F. "Temperature and Wetness Duration Requirements for Apple Infection byBotryosphaeria obtusa." Phytopathology 79, no. 4 (1989): 440. http://dx.doi.org/10.1094/phyto-79-440.

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Barthakur, N. N. "Leaf surface wetness duration measurements by radiogauge and electronic techniques." Communications in Soil Science and Plant Analysis 18, no. 4 (1987): 405–19. http://dx.doi.org/10.1080/00103628709367829.

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Cole, I. S., W. G. Ganther, P. Corrigan, S. Galea, P. Trathen, and B. Hinton. "Frequency and duration of wetness periods on surfaces in airframes." Corrosion Engineering, Science and Technology 47, no. 7 (2012): 529–35. http://dx.doi.org/10.1179/1743278212y.0000000003.

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Savage, MJ. "Estimation of leaf wetness duration for a short-grass surface." South African Journal of Plant and Soil 29, no. 3-4 (2012): 183–89. http://dx.doi.org/10.1080/02571862.2012.750017.

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Jacobs, A. F. G., B. G. Heusinkveld, G. J. T. Kessel, and A. A. M. Holtslag. "Sensitivity analysis of leaf wetness duration within a potato canopy." Meteorological Applications 16, no. 4 (2009): 523–32. http://dx.doi.org/10.1002/met.151.

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