EFICIENCIA FOTOQUÍMICA Y PRODUCTIVA DEL CULTIVO DE PIMIENTO (CAPSICUM ANNUUM L.) EN CONDICIONES DE INVERNADERO CON TRES DOSIS DE FERTILIZACIÓN NITROGENADA

Abstract

THE PEPPER (CAPSICUM ANNUUN L.) IS A VEGETABLE THAT IS PRESENT IN THE DIET OF MANY PEOPLE AND HAS A HIGH NUTRITIONAL AND ECONOMIC VALUE FOR THE FARMERS WHO ARE RESPONSIBLE FOR GROWING THIS VEGETABLE. THIS RESEARCH WAS CARRIED OUT AT THE TECHNICAL UNIVERSITY OF MANABÍ, WITH THE AIM OF EVALUATING THE PHOTOCHEMICAL AND PRODUCTIVE EFFICIENCY OF PEPPER CULTIVATION IN GREENHOUSE CONDITIONS WITH NITROGEN FERTILIZATION LEVELS. A COMPLETELY RANDOMIZED BLOCK DESIGN WITH FOUR TREATMENTS AND FOUR REPETITIONS WITH THREE TYPES OF NITROGEN FERTILIZATION WAS USED. THE VARIABLES EVALUATED WERE, CHLOROPHYLL FLUORESCENCE, CHLOROPHYLL INDEX (SPAD), FRUIT SIZE AND LENGTH, YIELD, DIAMETER AND PLANT HEIGHT. THE RESULTS SHOWED THAT THERE WERE NO SIGNIFICANT DIFFERENCES IN DIAMETER AND PLANT HEIGHT, WHILE IN YIELD, ALL TREATMENTS WITH THE EFFECT OF NITROGEN FERTILIZATION EXCEEDED 60,000 KG HA-1 COMPARED TO THE CONTROL, LIKEWISE, THE EFFECT OF NITROGEN MARKED A SIGNIFICANT EFFECT ON THE CHLOROPHYLL INDEX AND THE PHOTOCHEMICAL ACTIVITY IN THE PEPPER CROP COMPARED TO THE REFERENTIAL CONTROL. IN CONCLUSION, THE EFFECT OF NITROGEN FERTILIZATION IN PEPPER CULTIVATION UNDER GREENHOUSE CONDITIONS, POSITIVELY FAVORS THE PHOTOCHEMICAL ACTIVITY OF THE PLANTS, INCREASING THE LEVELS OF CHLOROPHYLL INDEX TO POTENTIATE A HIGHER YIELD.