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Emergence of Kenaf Seedlings as Affected by Seed Fungicides 1
Author(s) -
White G. A.,
Adamson W. C.,
Whiteley E. L.,
Massey J. H.
Publication year - 1971
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1971.00021962006300030041x
Subject(s) - thiram , seedling , sowing , fungicide , kenaf , germination , seed treatment , horticulture , agronomy , hibiscus , biology , chemistry , organic chemistry , fiber
Abstract Effects of four chemical seed treatments on seedling emergence of three seed lots of kenaf ( Hibiscus cannabinus L.) were studied at several locations in 1969‐70. No beneficial effects of chemical seed treatments were found from a late planting at Experiment, Ga. At Savannah, Ga., in 1969, significantly more seedlings emerged from an early April planting of seed treated with tetrachloroisophthalonitrile (Daconil 2787) 3 ‐ sodium p‐(dimethylamino)benzenediazosulfonate (Dexon) 3 + 1,4‐dichloro‐ 2,5‐dimethoxybenzene (chloroneb) and bis(dimethylthiocarbamoyl) disulfide (thiram) than from the check. For combined 1969‐70 data for ‘Everglades 71’, only N‐(ethylmercury)‐p‐toluenesulfonanilide (Ceresan M) 3 + chloroneb was superior to the check. At Glenn Dale, Md., chemical seed treatment was beneficial in both 1969 plantings and in an early 1970 planting. In these tests Ceresan M + chloroneb was inferior to the other chemical treatments. Equally good results were obtained from thiram, thiram + chloroneb, and Daconil 2787‐Dexon + chloroneb. Thiram gave the best results in a 1969 test at College Station, Texas. Seedling emergence from ‘Everglades 41b’ seeds, that had an initial laboratory germination of 83%, was enhanced by chemical treatment. In field tests at Savannah and Glenn Dale, only 65% emergence was obtained for the untreated check compared to an average of 78% for the four chemical treatments. In general, differences among chemical treatments were small and all of them except Ceresan M could be used pending registration.