2013 Cilt 7 Sayı 21
Permanent URI for this collectionhttps://hdl.handle.net/11452/16997
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Browsing by Author "Ghadiri, Hossein"
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Item Efficacy evaluation of sulfosulfuron, metsulfuron-methyl plus sulfosulfuron, mesosulfuron-methyl plus ıodosulfuron-methyl and ıodosulfuron plus mesosulfuron herbicides in winter wheat (triticum aestivum L.)(Uludağ Üniversitesi, 2013) Malekian, Babak; Ghadiri, Hossein; Kazemeini, Seyed Abdolreza; Edalat, MohsenIn order to investigate the effect of sulfosulfuron, metsulfuron-methyl plus sulfosulfuron, mesosulfuron-methyl plus iodosulfuronmethyl and iodosulfuron plus mesosulfuron on weed control and wheat biological and grain yield, a two-year field experiment was conducted in Shiraz, Iran, during 2011-2012 and 2012-2013 growing seasons. The experimental design was randomized complete blocks with four replications. Treatments were sulfosulfuron at 18, 20.25 and 22.5 g a.i. ha -1 , metsulfuron-methyl plus sulfosulfuron at 28, 32 and 36 g a.i. ha -1 , mesosulfuron-methyl plus iodosulfuron-methyl at 14.4, 18 and 21.6 g a.i. ha -1 , iodosulfuron plus mesosulfuron at 18, 24 and 30 g a.i. ha -1 and two weedy and weed free checks. Compared with the weedy check, application of herbicides in both growing seasons reduced weed biomass and increased wheat biological and grain yield. Among herbicide treatments, metsulfuron-methyl plus sulfosulfuron at 36 g a.i. ha -1 reduced weed dry matter by 98. 6% and 97.55% in 2011-2012 and 2012-2013, respectively, and the lowest weed dry matter was observed with this treatment. In both years, maximum wheat biological yield was obtained in weed free check that was not significantly different from metsulfuron-methyl plus sulfosulfuron at 36 g a.i. ha -1 . The highest wheat grain yield was obtained with metsulfuron-methyl plus sulfosulfuron at 36 g a.i. ha -1.Item Nitrogen, manure and municipal waste compost effects on yield and photosynthetic characteristics of corn (zea mays l.) under weedy conditions(Uludağ Üniversitesi, 2013-12-09) Naderi, Ruhollah; Ghadiri, HosseinA two-year field experiment was carried out to investigate the effects of nitrogen, composted manure, municipal waste compost, and weeds on yield and photosynthetic characteristics of corn. Experimental design was split split plot factorial with 3 replications. Main plots were weedy and weed-free, sub plots were nitrogen fertilizer levels [0 (N0) and 200 (N200) kg N ha -1 as urea], and sub sub plots were factorial application of municipal waste compost [0 (C0), 25 (C1) and 50 (C2) t ha -1 ] and manure [0 (M0), 25 (M1) and 50 (M2) t -1 ha ] with all possible combinations. Manure and municipal compost increased photosynthetic rate (A) (27 and 7 %, respectively), stomatal conductance (gs) (12 and 25 %, respectively) and chlorophyll content of corn leaves same as nitrogen fertilizer. There was no significant difference between C2+M2 and C2+M2+N200 for corn yield. Weed presence significantly decreased A, gs, chlorophyll content, and yield of corn. Increase in organic or inorganic fertilizers did not decrease the detrimental effect of weeds on corn. Our results showed these organic amendments are valuable potential as nutrient sources for corn production and allow our farmers to recycle livestock and municipal waste products; however, they could also increase weed competition. These findings can use to improve organic fertilization as an essential part of integrated weed management.