Evaluation of the herbicide activity of Comurón PH 80, of Comercia Monaco in pre-emergency against annual overgrowths in sugarcane
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Abstract
The weeds compete with the cane for the light, the water and the nutrients increasing the costs and diminishing the yields. Many of the species are singly gifted to survive and to resist to the temperatures, the big droughts and the floods. In Cuba it is used the product successfully Diurón in diverse formulations. The objective of the present work is to evaluate the control of overgrowths and the fitotoxicidad in the sugarcane of the application in pre-emergency of the Comurón PH 80 in comparison with the standard treatment Diurón PH 80 under conditions of humidity, for that which an experiment of test of products settled down in the UBPC El Encanto belonging to the Sugar Company America Libre, located in the Santiago de Cuba province, on a calcid sialític soil, in the stump cane plants and the variety C89-250. A design of blocks was used at random, 5 treatments and 6 replicas. The evaluations were made to the 20, 40 and 60 days after having applied the product. The evaluated doses of the Comurón PH 80 were of 4, 6 and 8 kg/ha, while the standard treatment the dose was of 6 kg/ha. The best results were obtained with the treatment Comurón PH 80, to dose of 4 and 6 kg/ha commercial product (3.2 to 4.8 kg ia/ha), carrying out an effective and similar control of overgrowths to the one carried out by the standard Diuron PH 80 to 6 kg/ha p.c. (4.8 kg ia/ha), without the cultivation will show fitotoxicidad symptoms.
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