Date of harvest-irrigation studies with Pungo and Superior potatoes |
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| Authors: | E M Dunton |
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| Institution: | 1. Virginia Truck Experiment Station, 23420, Painter, Virginia
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| Abstract: | A three year study to determine the influence of date of harvest and irrigation on yield and quality of the Pungo and Superior varieties showed large Size A yield increases as harvest was delayed from mid-June to mid-July. Increased yields resulted from irrigation each year except with the superior in 1966. Large yield increases resulted from irrigation in 1968. Plants of the Superior variety on non-irrigated plots were stunted early from low soil moisture in 1968 and did not recover as well as those of the Pungo following increases in soil moisture later in the season. The yields of Size B potatoes in general decreased with delayed harvest as the Size A potatoes increased. Irrigation had only a minor influence on yields of Size B potatoes. Total solids of the Size A potatoes as influenced by date of harvest and irrigation varied from year to year. In 1966 there was a consistent increase in total solids with delay in harvest, while results in 1967 and 1968 varied. This variation was associated with rainfall and soil moisture, with lower total solids at high soil moisture levels and higher total solids with low soil moisture. Overall, irrigation resulted in minor decreases in total solids. |
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