Identification of Weeds in the Greenhouse Production Lands of Kirsehir, as well as their Prevalence and Densities

Abstract

Turkey has a higher greenhouse potential than the rest of the Mediterranean countries. In greenhouses, yield and quality losses arise at varying levels due to abiotic and biotic factors. Within the scope of this study, surveys were conducted in the vegetation period of 2021 to determine the weed species that have become a problem in soil greenhouses in Kırşehir Province, as well as their densities and prevalence. In the 16 greenhouses where the study was conducted, 28 weed species were identified, including 5 monocotyledons, 1 parasitic, and 21 dicotyledons from 16 families. It was determined that 64.28% of the identified weed species were annual, 24.42% were perennial, 7.14% were annual/biennial, 3.57% were parasitic, and 3.57% were biennial. Chenopodium album L. (2.94 pcs/m2), Amaranthus retroflexus L. (1.59 pcs/m2), and Solanum nigrum L. (1.03 pcs/m2) were determined to have the highest density in the greenhouses. The prevalence of weeds in the greenhouse lands was A. retroflexus (93.75 %), C. album (81.25 %), S. nigrum (75 %), and Portulaca oleracea L. (50 %), respectively. Consequently, it was observed that the control of these weed species, which are common and dense in Kırşehir greenhouse cultivation lands, was primarily necessary.