@article{article_48852, title={Effects of reduced doses of Trifluralin on the development of Redroot pigweed [<em>Amaranthus retroflexus</em> L. (Amaranthaceae)]}, journal={Plant Protection Bulletin}, volume={50}, pages={213–221}, year={2010}, author={Kahramanoğlu, İbrahim and Uygur, F.}, keywords={Trifluralin, doz-tepki eğrisi, minimum doz, ekim öncesi herbisit}, abstract={<p>This study was conducted to determine the minimum dose of pre-emerging herbicide: trifluralin giving satisfactory control efficacy (>90%) on Redroot pigweed ( <em>Amaranthus retroflexus </em> L.). Experiments were conducted in plastic pots kept in controlled greenhouses. 100, 80, 60, 40, 20 and 0 (control) % of the registered dose of trifluralin were tested. Plant heights, number of leaves and herbicide symptoms measured at 1st, 3rd, 5th, 7th, 14th, 21st and 28th days. At the 28th day plants were cut at soil surface, thus fresh and dry weights were determined. Dry weight data of the experiments were subjected to nonlinear regression analyses and the effective dose of tifluralin causing 90% reduction in dry weight (ED90) were estimated. Results indicated that 663.97 g a.i. ha-1 trifluralin gives 90% reduction in dry weight of <em>A. retroflexus </em>. </p>}, number={4}, publisher={TARIM VE ORMAN BAKANLIĞI EĞİTİM VE YAYIN DAİRESİ BAŞKANLIĞI}