Influence of simulated spring frost on growth and yield of three barley cultivars

McKenzie, J S and Faris, D G and Pauw, R M de (1982) Influence of simulated spring frost on growth and yield of three barley cultivars. Canadian Journal of Plant Science, 62 (1). pp. 81-88. ISSN 0008-4220

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Abstract

Spring barley was sown on 4 dates between 28 April and 21 May to evaluate the effect of a simulated frost at the 2-leaf stage on growth and yield. A portable field freezing chamber was used to subject the plants to a -5.6 deg C stress. The frost caused 49, 64 and 68% injury to the leaves and delayed heading by 2.4, 1.4 and 2.4 days in cv. Galt, Atlas and Olli, resp. Frost also reduced the number of tillers/plant, ripe ears/plant and plants/plot in all cv. Although the late-maturing cv. Galt had the most leaf frost resistance, the av. yield reduction (13.8%) was similar in all 3 cv. Complete defoliation by clipping resulted in no further reduction in yield than that which occurred from partial defoliation by freezing. Delayed sowing reduced yield by 8.6%. Frost reduced yield by 9.8% at the 2 early sowing dates and by 17.1% at the 2 later sowing dates

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Others Others > Agriculture-Farming, Production, Technology, Economics
Depositing User:	Mr B K Murthy
Date Deposited:	07 Jul 2014 10:42
Last Modified:	07 Jul 2014 10:42
URI:	http://oar.icrisat.org/id/eprint/8143
Official URL:	http://pubs.aic.ca/toc/cjps/62/1
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Google Scholar

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