Effect of simulated hail damage on yield and quality of Russet Burbank potatoes

1992 ◽  
Vol 69 (11) ◽  
pp. 705-714 ◽  
Author(s):  
M. J. Wille ◽  
G. E. Kleinkopf



1968 ◽  
Vol 45 (12) ◽  
pp. 449-457 ◽  
Author(s):  
R. Kunkel ◽  
Norris Holstad




1980 ◽  
Vol 57 (5) ◽  
pp. 197-204 ◽  
Author(s):  
G. G. Weis ◽  
J. A. Schoenemann ◽  
M. D. Groskopp


Author(s):  
R. J. Martin ◽  
P. D. Jamieson ◽  
D. R. Wilson ◽  
G. S. Francis


1967 ◽  
Vol 44 (10) ◽  
pp. 347-354 ◽  
Author(s):  
B. C. Beresford


2012 ◽  
Vol 92 (4) ◽  
pp. 783-794 ◽  
Author(s):  
Ramona M. Mohr ◽  
Dale J. Tomasiewicz

Mohr, R. M. and Tomasiewicz, D. J. 2012. Effect of rate and timing of potassium chloride application on the yield and quality of potato ( Solanum tuberosum L. ‘Russet Burbank’). Can. J. Plant Sci. 92: 783–794. Potassium is frequently applied to irrigated potato in Manitoba. Field experiments were conducted at two sites in each of 2006, 2007 and 2008 to assess effects of rate and timing of potassium chloride (KCl) application on the yield, quality, and nutrient status of irrigated potato (Solanum tuberosum ‘Russet Burbank’) in southern Manitoba. Preplant application of KCl increased total and marketable yield at one site, and tended (0.05<P ≤ 0.10) to increase total and marketable yield at three additional sites. At three of the four K-responsive sites, soil test K levels were <200 mg NH4OAc-extractable K kg−1, the level below which K fertilizer is recommended based on existing guidelines. Effects of timing of KCl application on total and marketable yield were limited although, averaged across sites, KCl applied at hilling reduced the yield of small tubers (<85 g) and increased the proportion of larger tubers (170 to 340 g) compared with preplant application. Averaged across sites, KCl applied preplant or at hilling reduced specific gravity compared with the 0 KCl treatments. Improvements in fry colour with KCl application were evident at only one site. Petiole and tuber K and Cl− concentration, K and Cl− removal in harvested tubers, and post-harvest soil test K concentration increased with KCl application. However, petiole K concentration measured 82 to 85 d after planting predicted only 24% of the variability in relative marketable yield for sites containing between 164 and 632 mg NH4OAc-extractable K kg−1 to 15 cm. Results demonstrate the potential for yield increases and specific gravity declines with KCl application under Manitoba conditions, but suggest that further research will be required to better predict the potential for yield responses using soil and petiole testing.





1982 ◽  
Vol 22 (116) ◽  
pp. 244
Author(s):  
DM Whitfield

Tobacco crops were artificially damaged to simulate effects of hail in two series of experiments run over three years. In the first series, four treatments ranging from no damage to complete loss of leaves plus the apex were imposed when 5,10 or 15 leaves had unfolded. The performance of crops replanted or ratooned at the same stages was also measured. In the second series, the effects of lamina loss or midrib damage, or both in crops at early flowering were investigated. The first series showed that yield and quality were drastically reduced by severe damage at the 15 leaf stage. Yields where all the leaves were lost were only 940 kg/ha compared with controls yielding 2400 kg/ha. Replanted crops also yielded poorly at this stage (91 0 kg/ha) but ratooned crops produced satisfactory yields (1840 kg/ha) of good quality leaf. However, ratooning led to significant delays in harvest. In the second series, yields decreased from 2370 and 2030 to 161 0 kg/ha with loss of one-third and two-thirds of the lamina tissue, respectively. Damage to midribs caused additional losses of up to 400 kg/ha. However, only the most severe loss of lamina tissue depressed leaf quality.





Sign in / Sign up

Export Citation Format

Share Document