48th TWC, Tob. Work. Conf., 2018, abstr. 20
Screening of acidifying chemicals for use in the production of organic tobacco seedlings
(1) North Carolina State University, Raleigh NC USA; (2) North Carolina Department of Agriculture and Consumer Services, Raleigh NC USA
Float water bicarbonate concentration in excess of 2.0 meq/L (100 ppm) can result in stunted, unusable seedlings unless float water is acidified. In conventional greenhouse systems, sulfuric acid is used for this purpose; however, that chemical is...