Korkmaz, Ahmet Ondokuz Mayıs Üniversitesi - Ziraat Fakültesi - Toprak Bilimi ve Bitki Besleme Bölümü, Turkey , Karagöl, Arife Ondokuz Mayıs Üniversitesi - Ziraat Fakültesi - Toprak Bilimi ve Bitki Besleme Bölümü, Turkey , Horuz, Ayhan Ondokuz Mayıs Üniversitesi - Ziraat Fakültesi - Toprak Bilimi ve Bitki Besleme Bölümü, Turkey

The effects of humic acid added into the nutrient solution on yield and some fruit quality properties of tomato plant under the increasing NaCl stress conditions

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The objective of this research was to determine the effect of humic acid added into nutrient solution on yield, stem+leaf, root dry matter, some fruit quality properties of tomato plant under the increasing NaCl stress conditions. Experiment was planned in 3x4 factorial design with three replicates. Peat and perlit (1:1 ratio) were used as a solid media. Four humic acid doses (0-320-640 and 1280 ppm) were added into nutrient solutions including three sodium chloride (NaCl) doses (0-44.4 and 70.4 mM). Twelve different nutrient solutions were applied to each pot as 100 mL/day until flowering period and 200 mL/day from flowering period to harvest time. Fruit yield decreased significantly by the NaCl effect, but it was not affected by the humic acid application. Humic acid significantly increased stem+leaf dry matter amount, but NaCl decreased it. Humic acid application at 0-44.4 and 70.4 mM NaCl levels increased stem+leaf dry matter content as 19.04-7.26 and 21.49 % ratios, respectively and provided tolerance to NaCl at 70.4 mM level. Humic acid at low dose caused significant increase in root dry matter, but it decreased at higher humic acid dose. NaCl caused significant decrease in root dry matter. Humic acid increased root dry matter content 26.18% at 70.4 mM NaCl dose and provided tolerance to NaCl. humic acid significantly increased dissolved dry matter content in fruit and fruit juice pH. NaCl significantly increased dissolved dry matter content, but decreased fruit juice pH. humic acid significantly decreased fruit number having blossom end rot, but NaCl increased it. Humic acid decreased fruit number having blossom end rot at 44.4 and 70.4 mM NaCl doses and provided tolerance to NaCl.

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Tomato , Humic acid , Quality , Fruit yield , NaCl stress conditions , Tolerance

Anadolu Journal Of Agricultural Sciences

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