Effects of Different Fertilizer Sources on Weed Growth in Organic Wheat

Authors : Sancar BULUT, İrfan ÇORUH, Ali ÖZTÜRK

Pages : 263-276

Doi:10.1501/Tarimbil_0000001215

View : 62 | Download : 7

Publication Date : 2012-12-04

Article Type : Research Paper

Abstract :Fertilization and weed control are the most significant problems in organic farming. Since herbicides are prohibited in organic farming, generally cultural, mechanical and biological practices are implemented for weed control. In current research, effects of 7 different fertilizer sources [control, standard inorganic insert ignore into journalissuearticles values(ammonium sulphate + triple superphosphate); insert ignore into journalissuearticles values(NP);, soil amending bio-organic insert ignore into journalissuearticles values(Bio);, soil amending bio-organic SR insert ignore into journalissuearticles values(Bio SR);, organic soil amending leonardite insert ignore into journalissuearticles values(Leo);, organic manure insert ignore into journalissuearticles values(OM); and cattle manure insert ignore into journalissuearticles values(CM);] on weed control in two wheat varieties insert ignore into journalissuearticles values(Kırik, Doğu-88); were investigated among the years 2006-2009. Weed intensity, frequency and dry weights were analyzed to assess the impacts of treatments on weed control. A total of 43 different weed species were observed in Doğu-88 plots and 45 different species were observed in Kırik plots during the entire experimental years. Average weed density for Doğu-88 and Kırik cultivars were found to be 36.6 weed m-2 and 42.8 weed m-2 respectively. However, the difference in weed density of cultivars was not found to be significant statistically. Significant differences were observed among cultivars with regard to weed densities and weed dry weights per square meter and dry weights were determined as 139.5 kg da-1 for Kırik and 90.3 kg da-1 for Doğu-88. While the lowest weed density was observed in OG insert ignore into journalissuearticles values(organic manure); treatment, the highest values were observed in CM insert ignore into journalissuearticles values(cattle manure); treatments with 40.0 weed m-2 in Doğu-88 and 49.5 weed m-2 in Kırik. Dry matter yields of weed per unit area were lower in OM, Bio, NP, BioSR treatments than the other treatments. Along with current findings, Doğu-88 cultivar with OG fertilizer can be recommended for organic wheat farming in Erzurum. 
Keywords : Buğday, yabancı ot, yabancı ot kontrolü, gübre

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