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vol. 7, nr. 4 (2006)
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Tolerance of tomato and cauliflower leaves for selected adjuvants
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Jerzy Roszyk1, Olgierd Nowosielski2, Włodzimierz Breś1
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1 Department of Horticultural Plant Fertilization, Agricultural University, ul. Zgorzelecka 4, 60-198 Poznań |
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2 Institute of Horticulture, ul. Konstytucji 3-Maja 1/3, 96-100 Skierniewice |
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vol. 7 (2006), nr. 4,
pp. 991-1001
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abstract:
Phytotoxicity of 15 adjuvants dissolved in water was determined in the presented studies. The following adjuvants were tested on tomato and cauliflower leaves: Tween 80, Tryton x – 100, Sandovit, emulsified plant oil, mineral oil Atpol – in 0.05%, 0.10% and 0.25% concentrations, lignosuphonates, glycerol, saponin, carboxymethylcellulose, carboxymethylostarch in 0.25, 0.50 and 1.00% concentrations, and starch, molasses, vinasse, saccharose and polyvinyl alcohol in 0.50, 1.00 and 2.50% concentrations. The majority of the studied adjuvant water solutions showed an almost neutral reaction, except for the following solutions: lignosulphonates, saponin and vinasse which gave a slightly acid reaction. Besides glycerol in 1.00% concentration, the remaining adjuvants were not phytotoxic. Four selected adjuvants (lignosulphonates, saccharose, molasses and vinasse) were also investigated regarding their tolerance for foliar fertilization by solutions of Florogama “S”, Florogama “O”, Mixt–1 and Ekolist in differentiated (high) concentrations. A slight positive effect was shown only by the addition of saccharose which increased the phytotoxicity treshold for the solutions of Florogama “S”, Mixt–1 and Ekolist, while the presence of the tested adjuvants in the solution of Florogama “O” decreased their phytotoxic concentration and acted unfavourably.
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keywords:
adjuvants, phytotoxicity, tolerance of plants, foliar nutrition, tomato, cauliflower
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original in:
Polish
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