Application Volumes and Sizes of Droplets for the Application of Diquat Herbicide in the Control of Eichhornia crassipes
The objective of this study was to evaluate the efficiency of application and the efficacy of control of water hyacinth (Eichhornia crassipes) with the use of the diquat herbicide done with two application volumes associated to three droplets classes. Three experiments were conducted; in the first, the application efficiency was evaluated; in the second, the control efficiency and; in the third, the droplet spectrum. They were conducted in a completely randomized design with five, four and six replicates, respectively. The treatments were arranged in a 2 x 3 factorial design, with two application volumes (100 and 200 L ha-1) and three droplets classes (fine, extremely coarse and ultra-coarse) to the first and second experiment and the third comprised two diquat concentrations in spray solution (2 and 4 g i.a. L-1) and three droplets classes (fine, extremely coarse and ultra-coarse). The application efficiency was determined by the coverage by droplets, spray deposition and active ingredient of the herbicide (diquat). The efficacy was measured by the control and the percentage of plants with regrowth at 50 days after application. The spectrum of droplets produced per each nozzle model used to obtain the droplets classes were analyzed. According to the parameters analyzed, using the droplets classes extremely thick and ultra thick can provide greater certainty in the application of diquat in the aquatic environment associated with the deposition of the active and sufficient coverage to control Eichhornia crassipes with both application volumes
Main Authors: | ALMEIDA,D.P., AGOSTINI,A.R., YAMAUCHI,A.K., DECARO JR.,S.T., FERREIRA,M.C. |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Sociedade Brasileira da Ciência das Plantas Daninhas
2016
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100171 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Doses e horário de aplicação do diquat no controle de Eichhornia crassipes
by: Pitelli,R.A., et al.
Published: (2011) -
Manejo químico de Eichhornia crassipes e Brachiaria subquadripara com Diquat em condições de reservatório
by: Martins,D., et al.
Published: (2011) -
Influência da chuva na eficiência de diquat no controle de Salvinia auriculata, Pistia stratiotes e Eichhornia crassipes
by: Souza,G.S.F, et al.
Published: (2011) -
Water hyacinth (Eichhornia crassipes)
by: Heuzé, Valérie, et al. -
Phytochemical Analysis, Antifungal, Antimicrobial Activities and Application of Eichhornia crassipes Against Some Plant Pathogens
by: HAGGAG,M.W., et al.
Published: (2017)