|
|
Optimizing of weed control in carrot anf lettuce
Šuk, Jaromír ; Jursík, Miroslav (advisor) ; Kolářová, Michaela (referee)
The main aim of this work was to made literary review about possibilities of weed control in carrot and lettuce. The experimental part of this work was focused on optimization of herbicides weed control in lettuce and carrot. Small plot field trials were carried in 2015.
Literary review was focused on the summarizing of information about the particular vegetables. Futhermore, the available literature about weed control in these vegetables were complied, specialy with a focus on mechanical and chemical (herbicide) control. The last section of review is dedicated to optimizing use of herbicides that are not registered in tested vegetables.
In lettuce, herbicidal efficacy was assessed on Chenopodium album, Amaranthus retroflexus, Mercurialis annua and Echinochloa crus-gali and selectivity of herbicides to crop. In carrot, herbicidal efficacy was assessed on Amaranthus retroflexus, Solanum physalifolium, Chenopodium album, Echinochloa crus-gali and Mercurialis annua and selectivity of herbicides to crop.
Lettuce was treated by herbicide combinations with active ingredients: befor planting or postemergence pendimethalin, postemergence propyzamide, postemergence phenmediphan, postemergence dimethenamid and postemergence pethoxamide. Carrot was treated by herbicide combinations with active ingredients: preemergence aclonifen, preemergence clomazone, preemergence dimethenamid, preemergence pendimethalin, postemergence linuron and postemergence metribuzin.
In lettuce, were on the plots, where were used pendimethalin and dimethenamid. In carrot, best weed control were on the plots, where were used aclonifen, clomazone and dimethenamid. However, after application these herbicides, highest phytotoxicity was found. The lowest selectivity to both tested vegetables showed dimethenamid.
|
guest ::
RSS feed.