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The work was carried out with the objective of updating the weed flora associated with sugar cane in Cuba. Weed identification surveys corresponding to 2023 were carried out in all sugarcane production units in the country. Identification was carried out by walking the field along its diagonals, with the help of catalogs to the identification of the species. Families' diversity index, the relative frequency of the species at the field and the relation of interference for morfotipo they were determinated. The frequency was determined and classified into the categories of: Accidental; Uncommon; Moderately common and Very common. The surveys showed the existence of seven families, of which two belong to the class Liliatae (Monocotyledons) and five to the Magnoliatae (Dicotyledons). The Poaceae family presented the highest relative diversity index (54.2%), followed by Fabaceae and Mimosaceae with the same value (12.5%). twenty one genera were distinguished, 11 from the class Liliatae and 10 from the Magnoliatae. The most frequent were Brachiaria and Sorghum, both from the Poaceae family, with three and two meanings, respectively. The floristic inventory revealed the existence of 24 species of weeds associated with sugar cane as the most frequent at the national level, with frequency values above 1%, of which 14 belong to the class Liliatae and 10 to the Magnoliatae. [ABSTRACT FROM AUTHOR]

The work was carried out with the objective to determine the spatial and temporal distribution of the species Albizia procera (Roxb.) Benth in the areas planted with sugar cane in Cuba. The information was taken from the surveys of identification of weeds carried out in 2016-2020 period by the Weeds Integral Control Service (WICS) of the Sugar Cane Research Institute (SCRI). The identification was made by the visual method, crossing the field by its diagonals, with the use of manuals or catalogs in digital format o impressed. The magnitude of the infestation through frequency and the area plagued were evaluated. The results showed that in 2016-2020 period the specie showed frequency values within the category Accidental, with an increasing tendency. The bigger frequency found at the occidental region and the larger area plagued at the central one. The surveys evidenced the presence of this specie in all development phases and cycles of harvest of sugar cane. It is recommended to develop a management strategy that contributes to the reduction of infested areas. [ABSTRACT FROM AUTHOR]

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Copyright of Ingeniería Agrícola is the property of Instituto de Investigaciones de Ingenieria Agricola and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The work was carried out with the objective of determining the spatial and temporal distribution of Albizia procera (Roxb.) Benth species in sugarcane areas in Cuba. For this purpose, the information contained in the database generated by the weed identification surveys carried out in the period 2016-2020 by the Integral Weed Control Service (SERCIM) of the Instituto de Investigaciones de la Caña de Azúcar (INICA) was used. The surveys were conducted by the visual method, walking the field along its diagonals, with the use of manuals or catalogs in digital or printed format. The magnitude of the infestation was evaluated through the frequency and area infested. The results showed that in the period 2016-2020 the species presented frequency values in the Accidental category, with an increasing trend. The highest frequency was found in the western region and the largest plagued area in the central region. The surveys evidenced the presence of this species in all stages of development and harvest cycles of sugarcane. It is recommended that a management strategy be developed to help reduce infested areas. [ABSTRACT FROM AUTHOR]

The present work aimed to evaluate the effectiveness of the Guateque (Isoxaflutole) GD 75 formulation in the pre-emergent control of sugarcane weeds and the phytotoxicity caused to the crop. The studies were mounted on typical red Ferralitic soil, in the plant cane cycle, with the cultivar C86-156 in the Mayabeque province, in western Cuba. Five treatments were studied: three doses of Guateque GD 75, a standard treatment, and an absolute control, which were applied after planting with a Matabi 16-L capacity knapsack sprayer, Floot jeed nozzles, and a final calibrated 300-L solution. ha-1. The effectiveness of the herbicide product and the phytotoxicity to the crop were evaluated. Analysis of variance and Tukey’s test were performed, both at 0.05 probability of error. The results showed that the three evaluated doses of Guateque GD 75, up to 120 days after application, maintained a control from Excellent to Very good on the species Echinochloa colona (L.) Link, Portulaca oleracea L., Sorghum halepense (L.) Pers. And Cynodon dactylon (L.) similar to standard treatment. Phytoxicity symptoms were observed in cultivar C86-156 in the form of chlorosis that disappeared after 60 days of application. [ABSTRACT FROM AUTHOR]

Copyright of Ingeniería Agrícola is the property of Instituto de Investigaciones de Ingenieria Agricola and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Weeds cause severe damage to crops with large economic losses. In Cuba, in the latter, a group of woody weeds have invaded agro-ecosystems, mainly those linked to sugarcane activity, as a consequence of inadequate crop management. The present work was carried out with the objective of determining the effects caused to the mechanized harvest by the species A. procera, of woody consistency, in "Eulalio García" Sugarcane Production Farm, in Mayabeque Province in western Cuba. Blocks and fields were selected in which strips formed by 10 furrows were established, spaced at 1.6 m, which were consecutively numbered for random selection in the sample formation process, which was constituted with 30% of the fringes formed in each field. The time lost due to the obstruction of the weeds was evaluated by measuring the time elapsed from the moment the cutting activity was interrupted by the appearance of the obstacle until its restart once it had been overcome. Statistical processing included the calculation of central tendency and dispersion statistics and analysis of variance. Significant differences were found in the number of obstacles between fields and strips due to the heterogeneous distribution of plants in the area. The average time used to clear the obstacles was 26 seconds and the total time in the entire test was 0.29 hours. [ABSTRACT FROM AUTHOR]