University of California

Seedling emergence from encapsulated and coated lettuce seed


Frank E. Robinson
Hunter Johnson

Authors Affiliations

Frank E. Robinson is Associate Water Scientist, Department of Water Science and Engineering. University of California Imperial Valley Field Station, El Centro; Hunter Johnson, Jr., is Extension Vegetable Crops Specialist, University of California, Riverside.

Publication Information

Hilgardia 24(7):10-11. DOI:10.3733/ca.v024n07p10. July 1970.

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RATES OF EMERGENCE are greatly improved when sprinkler irrigation is used for lettuce germination in desert areas. Precision planting plus the possihilities for automatic thinners have offered growers hope for reducing labor requirements. To facilitate precision placrment, various seed coatings and planting machines have been developed. This report compares emergence and growth rate of plants developing from seed encapsulated in pressed vermiculite tablets, clay-coated seed (10-1 minicoated). and non-coated seed (see photos).

Robinson F, Johnson H. 1970. Seedling emergence from encapsulated and coated lettuce seed. Hilgardia 24(7):10-11. DOI:10.3733/ca.v024n07p10
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