| Popis: |
Taking in consideration the low fertility and degradation of rice soils, among other problems that contribute to rice yield decrease, the Grain Experimental Station and the Agricultural, Cattle and Industrial Complex carried out experiments and yield validations, respectively, in order to determine the influence of Fitomas – E (growth regulator), combined with organic and mineral fertilizer on rice production in vertisol. 11 treatimemts were employed in the experiments, including the controls, with four replications. Yied validations in production areas, just to know the response to Fitomas – E combined with Nitogen, Phosphorum and Potassium (NPK), compared to the control. Rice varieties J – 104 and Lp – 5 were utilized in the experiments and validations, respectively, with seed doses of 120 Kg. ha-1. More significant results were obtained when Fitomas – E was combined with foliar sprays of earthworm humus plus 50 and 100 % NPK, which showed statistical difference whith the remainder treatements; outstanding combinations were: Fitomas – E (2.0 t. ha-1) plus 50 and 100 “ NPK and earthworm humus (72.0 t. ha-1) in wuhich were obtained rice yield in the order of 5.57, 5.45, 6.05 and 5.87 t.ha-1 respectively. Economic analysis showed a profit of 6 981.09 Cuban pesos per hectare compared to the control when Fitomas – E plus 50 % NPK was applied. Field validation corroborated experimental results, obtaining 18.04 % rice yield increase when Fitomas – E was employed. |
