Visualization of freezing progression in turfgrasses using infrared video thermography

Crop Science ◽  
2003 ◽  
Vol 43 (1) ◽  
pp. 415 ◽  
Author(s):  
J. C. Stier ◽  
D. L. Filiault ◽  
Michael Wisniewski ◽  
J. P. Palta
Keyword(s):  
Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 1031
Author(s):  
Clara Bertel ◽  
Jürgen Hacker ◽  
Gilbert Neuner

In the temperate zone of Europe, plants flowering in early spring or at high elevation risk that their reproductive organs are harmed by episodic frosts. Focusing on flowers of two mountain and three early-flowering colline to montane distributed species, vulnerability to ice formation and ice management strategies using infrared video thermography were investigated. Three species had ice susceptible flowers and structural ice barriers, between the vegetative and reproductive organs, that prevent ice entrance from the frozen stems. Structural ice barriers as found in Anemona nemorosa and Muscari sp. have not yet been described for herbaceous species that of Jasminum nudiflorum corroborates findings for woody species. Flowers of Galanthus nivalis and Scilla forbesii were ice tolerant. For all herbs, it became clear that the soil acts as a thermal insulator for frost susceptible below ground organs and as a thermal barrier against the spread of ice between individual flowers and leaves. Both ice barrier types presumably promote that the reproductive organs can remain supercooled, and can at least for a certain time-period escape from effects of ice formation. Both effects of ice barriers appear significant in the habitat of the tested species, where episodic freezing events potentially curtail the reproductive success.


2015 ◽  
Vol 54 (5) ◽  
pp. 053114 ◽  
Author(s):  
Mohammad S. Alam ◽  
Abdullah Bal

2021 ◽  
Vol 31 (4) ◽  
pp. 261-277
Author(s):  
David Švorc ◽  
Tomáš Tichý ◽  
Miroslav Růžička

1987 ◽  
Vol 6 (4) ◽  
pp. 169-175 ◽  
Author(s):  
T. Ahmed ◽  
Z. J. Feng ◽  
P. K. Kuo ◽  
J. Hartikainen ◽  
J. Jaarinen

2017 ◽  
Vol 76 (23) ◽  
pp. 24635-24647 ◽  
Author(s):  
Seokhoon Kang ◽  
Chanhyuk Park

2010 ◽  
Vol 44 (4) ◽  
pp. 649-653 ◽  
Author(s):  
Fabrizio Oneto ◽  
Dario Ottonello ◽  
Mauro Valerio Pastorino ◽  
Sebastiano Salvidio

2004 ◽  
Vol 47 (6) ◽  
pp. 565-574
Author(s):  
S. Rohrmann ◽  
S. Hoy

Abstract. Title of the paper: Ethological investigations on occupation with the bedding of boars in Artificial Insemination stations Continuous video recordings with infrared video technique and computer supported analysis with OBSERVER program took place with 78 Piétrain boars in three A.I. stations during 3 x 24 hours. The mean percentage of occupation with the bedding during 24 hours was 7.4 ± 4.4 % (= 106.6 minutes) with a minimum of 1.5 % and a maximum of 18.6 %. The factors A.I. station, season and pen size had a significant influence on occupation with straw as bedding material. The percentage of occupation with bedding in winter was 1.8 % higher than in summer. The percentage of occupation with bedding increased with increasing pen size (from 5.5 % to 11.9 %). The differences between the A.I. stations (between 6.4 % and 10.1 % on average) were caused by management, especially by the frequency of the timers feeding, bedding and watering. The more frequent the boars were caused to stand up by feeding, bedding and watering the higher was the percentage of occupation with the bedding.


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