Agronomy of New Potato Lines (2008) - 7 pages
2008 Growing Season
Temperatures in 2008 were well below normal in May and June, about normal in July and slightly above normal in August and through the harvest period in September. The frost-free period (May 26 to Sept 24) was near the 30-year average. About 17 cm of rainfall was received from June 1 - Sept 1 (normal = 17cm). Very limited precipitation throughout August resulted in exerted substantial moisture stress on the dryland crop during the crucial period of tuber set and bulking. A total of 15 cm of supplemental irrigation was applied during the 2008 growing season.
The objective of this trial was to determine optimum N-fertility recommendations under irrigation for a range of new cultivars. The soil-N treatments (total of 100, 150, 200 or 250 # N/a) were achieved by pre-plant broadcasting sufficient 46-0-0 to supplement the residual soil N (ca. 100 # N/a). The N treatments were laid out in an incremental design.