Stress and crowding as causes of potato defects
AuthorB. J. Hoyle
Author AffiliationsBurton J. Hoyle is Associate Specialist, University of California, Davis, and Superintendent, Tulelake Field Station.
Hilgardia 18(7):8-9. DOI:10.3733/ca.v018n07p8. July 1964.
A well-distributed crop of potatoes is shown developing from plant shown in first photo to right. The soil has been removed by air blast and tubers left in natural position. Note that stolons are long enough to allow space for smooth development. Rhizoctonia often strikes late in the season, as shown in middle photo. These tubers reached about 3 oz in size by mid-August. At this time, rhizoctonia completely severed the stolons at the locations shown beneath the white pieces of paper. From August until harvest tops remained green but tuber growth remained as seen. In third photo to right, a young plant shows well-developed stolons and a good first set of potato tubers. Few pressure defects will develop in such a hill.
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Lateral pressure effects on… hay wafer storage structures
Development of scion roots on old home pear trunks
Cling peach irrigation
Systemic insecticides reduce the spread of curly top virus of sugar beets
Gibberellin sprays delay lime maturity
Clover establishment in Northern California
The bud mite and the Erineum mite of grapes