Effect of some plant activators on plant nutrientsContent of melon

Abstract

The effects of plant activators on yield, fruit quality, plant growth and nutrient uptake is well known. The experiment was conducted in Adiyaman conditions to examine the effect of plant activators on leaf nutrient content of organic melon (Galia C8 and Kirkagac 637) cultivation in Spring 2011 and 2013 and Bacillus subtilis (OSU 142), Bacillus megatorium (M3), Azospirillum spp. (SP 245), Bioplin, Phosfert, EM1, Bio-one, Endoroots, Sim-Derma and Spirulina spp. were used as plant activators. They are used alone and with organic fertilizers which are Çamlıbesi Bioaktif Compost, Çamlıbesi Liquid Organic Fertilizer and K-Humat for comparing with conventional fertilizers and control treatments. Different plant activators were observed to effect on different element levels of mineral contents of leaves (N, P, K, Fe, Zn, Mn, Cu, Ca, Mg). Plant activators applications had no effect on leaf content of N and K %. When varieties compared, Kirkagac 637 means increased on leaf content of P %, Ca % and Cu mgl-1. Analyzing application means, OSU 142 effected on P (0.38 %) leaf content. Conventional fertilizers effected on Ca (15.71 %), Fe and Zn (412.93; 46.62 mgl-1). Endoroots+OG effected on leaf content of Mn (220.19 mgl-1). Spirulina+OG effected on leaf content of Cu (23.51 mgl-1).