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    BUFFERING EFFECT OF ELEMENTAL SULFUR ON MYCORRHIZAL INFECTION OF LEEK
    (Taylor & Francis Inc, 2012) Karaca, Huseyin
    The effect of elemental sulfur (S) on the mycorrhizal infection and yield enhancement in leek was investigated. Plants were grown on a calcareous Karaburun soil (sub-group typic xerorthent) from a farm of the University of Cukurova, Adana, Turkey. Sterilized soil with and without the addition of elemental sulfur resulted in significant biomass increase of both root and shoot dry matter. The buffering effect of the elemental sulfur against the decreasing effect of phosphorus for the inoculation percent was also observed. This new finding about the efficiency of the mycorrhizae with the optimum inoculation rate resulting from the addition of 100 ppm elemental sulfur to the application inoculated with mycorrhizae indicates that it is of major scientific interest for ecologic agriculture.
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    EFFECTS OF ELEMENTAL SULFUR AND MYCORRHIZAE ON THE YIELD OF WHEAT IN DIFFERENT SOILS
    (Taylor & Francis Inc, 2014) Karaca, Huseyin
    Yield responses of wheat (Triticum aestivum L.) to elemental sulfur (S), mycorrhizae (mycorrhizal fungus, Glomus mosseae), and phosphorus (P) alone and collectively in two different soils were investigated. Plants were grown on calcareous sterilized Karaburun and Meneke soils (sub-group of Typic Xerorthent). In the all treatments mycorrhizae inoculation alone compared to the control treatment increased shoot and root yields. The yield responses to S alone, P alone, and combined application of S and P in mycorrhizal and non-mycorrhizal treatments in two different soils were interestingly fluctuating. The findings obtained in this study indicated that S tended to increase the efficiency of mycorrhizae in the well aerated Karaburun soil in comparison to a less aerated (heavier textured) Meneke soil. This potential to increase the efficiency of mycorrhizae on the root growth indicate that yield increase of shoot and grain can occur being an important finding for ecological agriculture.
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    Effects of Mycorrhizae and Fertilization on Soybean Yield and Nutrient Uptake
    (Taylor & Francis Inc, 2013) Karaca, Huseyin; Uygur, Veli; Ozkan, Abdo; Kaya, Zulkuf
    Soybean (local variety Arsoy) was grown for 45 days on calcareous Karaburun and Meneke soils. Mycorrhizal inoculation significantly increased both shoot and root yields in the soils. Sulfur (S) fertilization alone did not affect the shoot and root yields in Karaburun soil, whereas there was a great increase in the shoot yield and relatively smaller increase in the root yield for nonmycorrhizal treatments in Meneke soil. The combination of mycorrhizae and S in Meneke soil resulted in a yield less than that obtained for mycorrhizae treatments alone. There was a fluctuation in shoot and root yield upon S and/or phosphorus (P) fertilization. There was an accumulation of magnesium (Mg) and zinc (Zn) in the mycorrhizal treatments, whereas there was a dilution of those elements upon yield increases in the nonmycorrhizal treatments. Apart from those, co-application of mycorrhizae, P, and S, resulted in the greatest root yields in both soils, indicating the potential to increase the shoot yield, too, in a longer growth period.
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    EFFICIENCY OF ELEMENTAL SULFUR ON MYCORRHIZAE IN THE YIELD INCREASE OF WHEAT
    (Taylor & Francis Inc, 2012) Karaca, Huseyin
    Mycorrhizal infection enhances phosphorus (P) nutritional status of plants under P-deficient soil condition. The yield responses of wheat to sulfur (S) alone, phosphorus (P) alone, and combined application of sulfur and phosphorus in mycorrhizal and non-mycorrhizal treatments in calcareaous non-sterilized Karaburun soil (sub-group Typic Xerorthent) were investigated. The elemental sulfur enhanced the mycorrhizal efficiency that resulted in increased shoot, root, and grain yield dry matter in comparison to mycorrhiza treatment alone. This new finding to increase the efficiency of the mycorrhizae by the addition of 100 mg kg(-1) elemental sulfur to the soil suggests that elemental sulfur may play an important role for the ecologic agriculture. It can be specifically important for increasing the efficiency of mycorrhizal infection in well-aerated P deficient soil.