Abstract
ABSTRACT: A new sugarcane planting system, using pre-sprouted seedlings (PSS) to replace sugarcane stem fragments, substantiates the hypothesis of this study that there might be seedling toxicity by herbicides that are sprayed at pre-emergence in traditional systems. Therefore, the aim of this paper was to study the selectivity of herbicides applied at pre-planting in PSS. A field experiment was conducted in a randomized block design, using seven treatments and four replications. Herbicides were sprayed and, 24 hours later, the seedlings were planted. At the beggining of seedling development, all herbicide treatments showed phytotoxicity, but the symptoms decreased with the growth and development of seedlings, with no difference in height, stem diameter, number of leaves, quantum efficiency of PSII (Fv/Fm) and dry matter of plants between treatments. There was also no significant difference in the yield and technological characteristics of stems. All herbicides used were selective to sugarcane seedlings when applied at pre-planting in the PSS system.
Highlights
MATERIAL AND METHODSWorldwide, Brazil stands out as the largest producer of sugarcane
Considering that the planting system used was of presprouted seedlings (PSS), which is shallower and has seedlings with roots, these roots may be closer to the herbicide-treated range
Given the immobility of the product, which is positioned on the surface of the treated soil by the planting system with manual seed planters, the product could have been carried into the furrow, and placed near the roots of the seedlings
Summary
MATERIAL AND METHODSWorldwide, Brazil stands out as the largest producer of sugarcane. The objective was to study herbicide selectivity in PSS of sugarcane when applied at pre-emergence of weeds and pre-planting of seedlings.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
