Affiliation(s)
1. Department of Agronomy, Faculty of Agricultural Sciences, University of Sancti Spiritus (UNISS), Sancti Spíritus 60100, Cuba
2. Department of Vegetable Production, School of Agricultural and Veterinarian Sciences, State University Paulista (Unesp), Jaboticabal 14870, Brazil
3. Department of Production, Experimental Station of Tobacco, Cabaiguan 62410, Cuba
4. Scientific Department, Catalysis, S.L., Madrid 28016, Spain
ABSTRACT
With the objective of evaluating the effect of VIUSID agro on the
morphophysiological and productive performance of tobacco seedlings, a
randomised block experiment was designed with five treatments and three replications. The variants were:
dosage of 0.2, 0.5, 0.7 and 1.0 L/ha and one control. The variables are
recorded at three points of the cultivation cycle 10th, 20th and 30th days
after planting (DAP). Among the indicators
evaluated were the fresh and dry mass of the plants, the leaves per plant,
foliar area, the length and
diameter of the stalk as well as the characteristics of the root. The rates of
physiological growth and agricultural yield were also evaluated. The results
showed a significant increase (p ≤ 0.05) in the fresh
and dry mass of the plants when VIUSID was used. Regarding the length of the
stalk, the average increases of those treated in comparison to the control in
the final evaluation were 28.42%, 30.51%, 41.17% and 38.43%. In terms
of the diameter of the stalk and the foliar area in all evaluations, the
treatments with VIUSID significantly exceeded the control. The absolute growth
rate and net assimilation was significantly higher when the product was used.
In the relative growth rate, the most favourable behaviour was the dosage of
0.5 L/ha, in final evaluation.
With regard to yield, the best performance with significant differences (p ≤ 0.05) to the other
treatments was the dosage of 0.5, 0.7 and 1.0 L/ha. Therefore, VIUSID agro had a positive influence on the
morphophysiological and productive indicators of the tobacco seedlings.
KEYWORDS
VIUSID agro, tobacco, morphophysiological and
productive characteristics.
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