COBALTO COMO NUTRIENTE NECESARIO EN LA FIJACIÓN BIOLÓGICA DE NITRÓGENO EN MANÍ (Arachis hypogaea L.).

Abstract

THE PRESENT INVESTIGATION WAS CARRIED OUT IN THE “ISABELITA” FARM, LOCATED IN THE SAN JACINTO SITE OF THE LODANA PARISH OF THE SANTA ANA CANTON, MANABÍ PROVINCE, LOCATED AT THE COORDINATES: LATITUDE 01 ° 09 '51 "S AND LONGITUDE 80 ° 23' 24 "W) AND AT A HEIGHT OF 60 METERS ABOVE SEA LEVEL. THE OBJECTIVE OF THE RESEARCH WAS TO EVALUATE THE INFLUENCE OF COBALT ON THE BIOLOGICAL FIXATION OF NITROGEN IN PEANUTS (ARACHIS HYPOGAEA L.). THIS WORK WAS AN EXPERIMENTAL TYPE INVESTIGATION, WHERE A COMPLETELY RANDOMIZED STATISTICAL DESIGN (DBCA) WAS APPLIED, WITH EIGHT TREATMENTS AND THREE REPETITIONS, WHICH CONSISTED OF 2 FACTORS, TWO DOSES OF N (0 APPLICATION - 160 KG/HA) AND FOUR DOSES OF COBALT (0 APPLICATION - 4 PPM- 8 PPM- 12 PPM), OBTAINING A FACTORIAL OF 2 X 4. THE VARIABLES EVALUATED WERE: NUMBER OF PODS PER PLANT, DRY MATTER OF ROOT, STEM AND LEAVES, YIELD, NUMBER OF TOTAL AND ACTIVE NODULES, AND ABSORPTION OF N, P, K, CA AND MG. THE RESULTS OBTAINED WERE ANALYZED IN THE INFOSTAT 2018 SOFTWARE, BY MEANS OF A SIMPLE ANALYSIS OF VARIANCE AND DUNCAN'S MEAN COMPARISON TEST 5%.