air currents

Listing 1 - 10 from 64 for air currents

Lifecycle of Spikemosses
... megaspores. Upon rupture of mature microsporangia, the small, lightweight microspores (3) are readily dispersed by air currents but the larger, heavier megaspores often remain in place in the strobili. Germination of a ...
home.manhattan.edu

Eutypa Dieback of Grape HYG-3203-95
... of infected wood. Spores (ascospore) are produced in these structures and are discharged into the air. Ascospore discharge is initiated by the presence of free water (either rainfall or snow melt ... the same time pruning is being conducted. The ascospore can be carried considerable distances by air currents to recent wounds on the trunk. Pruning wounds are by far the most important points ...
ohioline.osu.edu

A General Health Management Guide for Indoor Plants, HYG-3067-96
... plant health. Remember that sunlight directly on leaves can greatly increase leaf temperature. Humidity Air under 30% relative humidity that is blowing over foliage for many hours each day is very stressful to most plants. In most indoor environments, winter air is far drier than summer air. Using room humidifiers, redirecting air currents, or growing plants above trays of water (gravel beds) ...
ohioline.osu.edu More from this site

Vegetable Crops pt 2
... conditions foliage appears as if burned by fire. The fungus overwinters in infected crop refuse. Air-borne spores of the fungus are produced in large numbers on old lesions during periods ... of affected spots. The fungus is seed-borne and spores can also be blown in air currents for long distances. Warm temperatures are required for fungus development. Control is obtained by using ...
plantpathology.tamu.edu

Pecan
... the scab fungus. Trees should be spaced to allow for air circulation between the trees. This encourages rapid drying of the ... pecan scab fungus produced on the unsprayed trees are spread by air currents to surrounding trees. Sanitation measures such as removal of old ... left in place, spores produced from old lesions are carried by air currents up to the tree. Fungicides are an important part of ...
plantpathology.tamu.edu More from this site

Spore dispersal in Bryophytes
... a stalk which holds this aloft the gametophyte. The spores once released are dispersed by air currents and, once they settle somewhere moist, germinate. This recommences the gametophyte generation. The spore ... the peristome teeth bend outwards spores fall out of the capsule and are carried by air currents photo courtesy Dr. Felix Schumm The peristome teeth are triangular two-ply structures which ...
scitec.uwichill.edu.bb

The Ferns
... movements causing the sporangium to break open exposing the spores to air currents.The sporangium breaks open in the region called the stomium. The ... more water is lost, the tensile strength of water is overcome and air comes out of solution forming a bubble within each cell of the ... couple of cm from the leaf surface but this is enough. Air currents do the rest. One leaf of a small fern may shed ...
scitec.uwichill.edu.bb More from this site

FPHG -
... . As spring approaches, these begin to mature and produce spores (ascospores) that are discharged into air currents and carried to developing apple buds. The fruiting bodies in the fallen leaves must be ...
ssfruit.cas.psu.edu

FPHG -
... centers. Disease Cycle Sexual spores are produced on overwintered, fallen leaves and are carried by air currents to newly formed leaves. About a month after infection, new spores are generated in the ...
ssfruit.cas.psu.edu More from this site

Drift Seeds and Drift Fruits
... Darwin & Ocean Dispersal Of Seeds Plant dispersal by ocean currents has fascinated many famous explorers, including Charles Darwin and Thor Heyerdahl. Sea currents have also been studied by the U.S. Coast ... to the Hawaiian Islands are clearly adapted to oceanic drift. If dispersal by birds and air currents are ruled out, it appears that seeds were carried thousands of miles to these islands ...
waynesword.palomar.edu

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