A Spot Climate Recorder

Schultz, H; Brooks, F. A.

doi:10.1175/1520-0477-37.4.160

Cited by 5 publications

(6 citation statements)

References 5 publications

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“…1 and 2) measured temperature and relative humidity a t 1 m above ground level in a standard weather shelter, rainfall at ground level, and wind speed and direction by a spot climate recorder with detectors 2 m above ground level. This last instrument (28) (Fig. 2) was designed in the Department of Agricultural Engineering, University of California, Davis, and constructed by Symens Mfg.…”

Section: Methodsmentioning

confidence: 99%

Springtime dispersal patterns of Monilinia laxa conidia in apricot, peach, prune, and almond trees

Corbin¹,

Ogawa²

1974

Can. J. Bot.

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CORB~N, J. B., and J. M. OGAWA. 1974. Springtime dispersal patterns of Motrilitria laxaconidia in apricot, peach, prune, and almond trees. Can. J. Bot. 52: 167-176. Numbers of airborne Motrilirria 10x0 conidia were related to the maturity of the sporodochia, the nature of the host structure bearing them, and the presence or absence of rain or fog. Hirst spore traps collected more airborne conidia during rains and on rainy days than on dry days among prunaceous hosts during the spring of 1966 and 1967. Numbers of conidia were greatest (6440 m-3 h-I) in the first 3-4 h of rain, while in dry periods, numbers were greatest (1200 m-3 h-I) when ambient humidity was lowest and temperature and wind speeds were highest. Fruit mummies, twig cankers, limb cankers, pedicels, and peduncles all bore sporodochia. Rains washed off successive crops of conidia, and with 52 800 conidia ~m -~ were collected directly below a sporulating peach fruit mummy.

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Section: Methodsmentioning

confidence: 99%

Springtime dispersal patterns of Monilinia laxa conidia in apricot, peach, prune, and almond trees

Corbin¹,

Ogawa²

1974

Can. J. Bot.

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“…Eight years of wind recordings were available at Davis from an 8-meter mast registering on a Bendix-Friez quadruple recorder. A three-year recording was available for Grimes, obtained from a portable spot-climate recorder [5] that uses an anemometer height of 2 meters. Direct comparison of wind velocity at these two stations is not attempted because of the different anemometer heights, station exposures (only Grimes was un-obstructed), and the different threshold velocities.…”

Section: Diurnal Periods Of Low Wind Velocitymentioning

confidence: 99%

The Delayed “Sea Breezes” in the Sacramento Valley and the Resulting Favorable Conditions for Application of Pesticides

Schultz

Akesson

Yates

1961

Bulletin of the American Meteorological Society

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Hourly wind recordings at Davis and Grimes, California, revealed that spraying operations by aircraft in summer can frequently be extended beyond the customary sunrise hours without damage by drift to adjacent crops susceptible to the spray material. The data permitted scheduling spraying according to wind types. These wind records also revealed noteworthy meteorological peculiarities. The influx of the marine air beginning in the afternoon lasts almost all night, only being replaced by the opposite flow after sunrise. This indicates that the often heard “land and sea breeze” term is not appropriate, and that rather a monsoon flow tendency prevails. It is suspected that the daily variation is primarily influenced by a daily cycle in strength and northward extension of the Arizona Low.

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“…Results indicated that the increase in tempera ture with increase in diameter was rapid up to 4 to 5 inches, and was low above a diameter of 6 inches. Schultz and Brooks (1956) stated that the lags of larger globes are not a serious problem, and even suggested increas ing the mass of the globes to reduce temperature unrest.…”

Section: Physical Environmentmentioning

confidence: 99%

Flight activity ofColias philodice eurythemeBoisduval in response to its physical environment

Leigh¹,

Smith²

1959

Hilg

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Field studies were made of body temperature and flight activity of the alfalfa butterfly, Colitis philodice eurytheme Boisduval, in relation to solar and other radiation, light, air temperature, and moisture. Some of the response factors were also studied under controlled laboratory conditions. Solar radiation appears to be the most important agent affecting body temperature, but its effect is in turn modified by air temperature and the cooling of the insect through evaporation. Under sufficiently high radiation, and when air temperature is not too low, Colias increases its body temperature by orienting perpendicular to the sun. When body temperature nears the critical high level, Colitis appears able to regulate it by decreased flight, rest in shade or on moist soil or algal scum, or by taking water while at rest, thus permitting cooling without desiccation. When air temperature and radiation approach limiting levels, however, desiccation can limit flight even if body temperature is below the upper critical level, especially where there is no source of water or nectar. On the other hand, peak solar radiation may not limit flight if low air temperature and evaporation keep the body temperature within the favorable range for activity. Low light intensity is the only factor of diose studied that, alone, caused cessation of flight when all other factors were favorable.

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A Spot Climate Recorder

Cited by 5 publications

References 5 publications

Springtime dispersal patterns of Monilinia laxa conidia in apricot, peach, prune, and almond trees

Springtime dispersal patterns of Monilinia laxa conidia in apricot, peach, prune, and almond trees

The Delayed “Sea Breezes” in the Sacramento Valley and the Resulting Favorable Conditions for Application of Pesticides

Flight activity ofColias philodice eurythemeBoisduval in response to its physical environment

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