Akdeniz Bölgesinde ikinci ürün soya tarlalarındaki yabancı otlar ve mücadele imkanlarının belirlenmesi üzerinde araştırmalar.

Abstract

In 1984-1986, a survey was carried out to determine weed species, density and widespread in second crop soybean fields in Adana, Antalya, Hatay, Icel, Kahramanmaras provinces. The possibilities of the most effective control measures were also studied with various chemical and mechanical control methods; and then studied on soybean yield and rotation crop wheat. According to the results of survey; in the second crop soybean fields in desity in Adana, nudsedge species ( Cyperus rotundus L.) common purslane ( Portulaca oleracea L), Johnson grass [ Sorghum halepense (L.) Pers.], in Icel common purslane, nudsedge species, tumble pigweed ( Amaranthus albus L.); in Antalya nudsedge species, common purslane, johnson grass; in Kahramanmaras, awnless barnyard grass ( Echinochloa colonum (L.) Link.), common purslane, johnson grass; in Hatay tumble pigweed, nudsedge species, awnless barnyard grass were determined weed species which are the most important, and their density were above 10 plant/m2. In widespread nudsedge species was the most important weed in all provinces; at the same time the other species were also important weeds which are widespread in second crop soybean field. In 1984-1985, control experiments were carried out in Cukurova Agricultural Research Institute, metolachlor, prometryn, terbutrin, linuron, trifluralin, metribuzin, vernolate, fluazifop-butyl, bentazon and mechanical control were tested against all weeds. Metolachlor (500 ml/da prep.) was found effective against purple nudsedge, and fluazifop-butyl (100 ml/da prep.) gave sufficient effect against johnson grass. It was not found different among chemical and mechanical control to effect and yield. For that purpose, mechanical control could be recommended against weeds in soybean fields. I has been found that the herbicides were not phytotoxicity to germination of rotation wheat seeds.