Agricultural yield of three varieties of black tobacco (Nicotiana tabacum L.) in Oriental Region of Cuba

One studies the agricultural yield of three varieties black tobacco (Nicotiana tabacum L) with the objective of determining the variety of more agricultural yield cultivated in the sun in agroecosistemas of brown floors and fluvisoles of the county Granma. A design experimental Blocks was used at random. For the statistical analysis it was used an analysis of variance double classification and multiple comparison of stocking by Tukey. The variety of more agricultural yield was the Havana 2000 in a floor fluvisol.