Corn and Alexandergrass Intercropping System: Influences of Herbicide Management on Grain and Forage Yield
Year: 2018
Type: article
Abstract: In Southern Brazil, intercropping system between corn and Urochloa is an interesting way to improve soil cover and animal feed after corn harvesting.This study was carried out with the objective to evaluate the effect of herbicides and its doses on corn and Alexandergrass (Urochloa plantaginea) yield, in an intercropped system.The experiment was arranged in a randomized block design, with four replications in a factorial scheme.First factor was composed of four herbicide associations: (1) Atrazine + Oil; (2) Atrazine + Simazine + Oil; (3) Atrazine + Nicosulfuron + Oil; and (4) Atrazine + Mesotrione + Oil.The second factor was composed of three doses of these herbicide combinations: 100%, 75% and 50% of the recommended dose to control Alexandergrass.A control treatment, without herbicide spraying, was evaluated.Corn crop was sowed in no-till system and Alexandergrass established by self-seeding.Herbicide management in corn with Alexandergrass intercropping system is primordial to obtain good grain yields, once corn was highly affected by the forage.Herbicides and doses influenced Alexandergrass forage yield, although, all the managements allow forage availability after corn harvest.The better corn yields in the intercropping, with adequate Alexandergrass forage production, were obtained with 75% of the recommended dose of Mesotrione and Nicosulfuron associations.
Source: Colloquium Agrariae
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDGs: Zero hunger, Life on land
Open Access status: diamond
OpenAlex ID: W2887450653