In the last 30 years, the area occupied by pearorchards, in Romania, is decreasing from 9974 ha to 4827.05 ha. Favorable conditions for pear cultivation can be found in 14 counties. Orchards are annually infested with weeds that compete with fruit trees for nutrients, space, water, light and reduce growth, vigor, flowering, production and fruit quality. Herbicides are an effective, easy and relatively cheap method of weed control. The effectiveness of herbicides against weeds is different for each species. The aim of this study was to reduce populations of Lamium purpureum and Ranunculus repens by using MCPA and Fluroxypyr-methyl. The testing of herbicides against the two weed species (Ranunculus repens and Lamium purpureum, was carried out in the Orchards Experimental Research Station - Lugoj Herindești (Timiș county). The experimental field included 5 variants: three treated with the hormonal herbicide MCPA 50% DMA (0.9 l/ha, 1.2 l/ha, 1.5 l/ha), one in which the herbicide Cerlit was applied (1.0 l/ha) and a control untreated variant. These herbicides were applied post-emergence (21.04.2022). The impact of MCPA and fluroxypyr, in the control of Ranunculus repens and Lamium purpureum species, was determined 10-38 days after application. 10 days after applying the treatments, the species Lamium purpureum was reduced by 70-75%, regarding the species Ranunculus repens it was observed that the product MCPA 50% DMA 1.5 l/ha managed to reduce the population in percentage of 80%. At 38 days after application, an increase in the effectiveness of herbicides in the control of segetal species was observed.

Ranunculus repens, Lamium purpureum, control, efficacy, MCPA

agronomy

Presentation: poster