The effect of biostimulator applications on nutrient composition of strawberries
2002
Esitken, A. | Pirlak, L.,Ataturk University. Erzurum (Turkey). Dept. of Horticulture
This study was carried out in greenhouse on strawberries grown in a column m in Uzundere district, Erzurum, Turkey. The biostimulator 'Macrocrop' and 'Goldmarine' were foliar-applied to the cv. Fem at the rates of 250, 500 and 750 ppm 1, 2, 4 and 8 times at 15 days intervals beginning 15 days after planting. Two months after last application, the content of N, P, K, Ca, Mg, Fe, Cu and Zn in the leaves was analysed. The nutrient composition was higher in the plants treated with the biostimulators than in the control. Nitrogen content was 2.48 percent in the control whereas in plants treated 4 times with 250 ppm it was 3.40 percent and those treated once with 250 of Goldmarine had 3.06 percent of nitrogen. In all rates of biostimulator, there was a negative relationship between application frequency and N content. Calcium content was 1.63 percent in the control plants whereas the plants that received Macrocrop at the rate of 750 ppm and those to which Goldmarine was applied once at the rateof 750 ppm had 2.38 percent. Similarly, iron content was 213 ppm in the control whereas in the plants that received Goldmarine four times at the rate of 500 ppm and in those with Macrocorp four times at the rate 500 ppm, it was 1120 ppm
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