| Abstract Detail
Production and Management Karlsson, Bjorn H. [1], Palta, Jiwan P. [2]. Influence of in-season calcium application on yield and grade: A five-year study showing cultivar and seasonal variation. OUR previous research has provided evidence that in-season calcium applications can increase tuber calcium and improve tuber quality. However, yield and grade response to calcium is variable across seasons and cultivars. Data was obtained (1998-2003) for five (Solanum tuberosum L.) cultivars (‘Russet Burbank’, ‘Atlantic’, ‘Snowden’, ‘Superior’ and ‘Dark Red Norland’) for total and individual grade yields. Calcium treatment consisting of calcium chloride, calcium nitrate and urea (CUC) was applied in three split applications totaling 168 kg.ha-1 calcium starting at hilling. Control split N timing and amounts resulted in same total nitrogen and timing for all plots. Five replications per treatment per year were harvested and electronically graded into < 113 g, 113-170 g, 170-283 g, 283-454 g, culls and “b” size grades. Medullary tissue was taken for calcium concentration from 3 separate ten-tuber composite samples per replication. Calcium was significantly increased in all cultivars in all years except ‘Atlantic’ in 2003, the year with highest calcium levels. ‘Superior’ and ‘Dark Red Norland’ had the highest calcium values, ‘Russet Burbank’ intermediate and lowest in ‘Snowden’ and ‘Atlantic’. With supplemental calcium treatment, ‘Dark Red Norland’ significantly decreased total yield in “b”s, 113-170 and <113 g grades and significant increase in 170-283 g yield over five years. Total yield was not influenced by calcium application in other cultivars. With calcium ‘Snowden’ showed decreased yield in < 113 and 170-283 g grades, ‘Superior’, showed a trend toward decrease in < 113 g, culls and “b”s, while ‘Russet Burbank’ showed a trend for reduced “b”s in 2000 and 2003. ‘Atlantic’ showed a trend toward decreased culls. Overall, ‘Dark Red Norland’ responded to calcium with significant reductions in < 170 g tubers while the remaining cultivars showed non-significant trends toward reduced culls, “b”-size and small tubers.
Log in to add this item to your schedule
1 - University of Wisconsin-Madison, Horticulture, 1575 Linden Dr., Rm 431 Plant Sciences, Madison, WI, 53706, USA
2 - University of Wisconsin, Department of Horticulture, 1575 Linden Drive, Madison, WI, 53706, USA
Keywords:
Yield and quality
Calcium
Russet Burbank
Atlantic
Snowden
Superior
Dark Rd Norland
grade
processing
tuber yield
culls.
Session: PAA12-2
Location: Hall of Ideas Room E/Monona Terrace
Date: Tuesday, July 25th, 2006
Time: 8:45 AM
Abstract ID:410 |
