INITIAL DEVELOPMENT OF MARACUJAZEIRO-AZEDO UNDER DIFFERENT TYPES OF SUBSTRATES

Abstract

THE PASSIFLORA GENUS HAS A LARGE NUMBER OF SPECIES, MORE THAN 400, OF WHICH ABOUT 120 ARE NATIVE TO BRAZIL. THE COMMERCIAL PRODUCTION OF PASSION FRUIT SEEDLINGS IS CARRIED OUT THROUGH SEEDS AND ALSO THROUGH VEGETATIVE PROPAGATION. SEEDLINGS OF PASSION FRUIT ORIGINATED FROM SEEDS ARE MORE VIGOROUS AND EARLY THAN THE SPECIES FROM GRAFTING. THE PLANTS NEED SUBSTRATES WITH PHYSICAL, CHEMICAL AND MICROBIOLOGICAL CHARACTERISTICS THAT PROVIDE AN ADEQUATE GERMINATION SYSTEM, BESIDES GUARANTEEING THE DEVELOPMENT OF THE PLANT AND THE ROOT SYSTEM. THE EXPERIMENT WAS CONDUCTED AT GOIAN�SIA FACULDADE EVANGÉLICA DE GOIAN�SIA, IN GOIAN�SIA GOI�S, IN A COMPLETELY RANDOMIZED DESIGN IN A 4X3 FACTORIAL WITH 6 REPLICATES, THE FIRST ONE BEING THE COMPONENT OF FOUR THIAMINE DOSES (VITAMIN B1): 0MG L-1, 100MG L- 1, 300MG L-1 AND 500MG L-1 EJUS COMPOSED OF THREE SUBSTRATES: BOVINE MANURE (SOIL, SAND AND BOVINE MANURE, RATIO OF 1: 2: 1), CHICKEN BED (SOIL, SAND AND CHICKEN MANURE, 1: 2: 1 RATIO) AND TROPSTRATO�® COMMERCIAL SUBSTRATE. THE SEEDS OF PASSION FRUIT (PASSIFLORA EDULIS) WERE PLANTED IN BLACK BLACKS WITH CAPACITY FOR 1KG. THE SOWING WAS DONE WITH THREE SEEDS PER BAG, THEN PERFORMING THE THINNING, LEAVING ONLY ONE PLANT PER UNIT. AFTER 40 DAYS OF SOWING AS PLANTS REMOVED FROM THE SUBSTRATE, CLEANED AND ANALYZED: PLANT LENGTH, ROOT LENGTH, FRESH SHOOT MASS AND TOTAL FRESH PLANT MASS. A THIAMINE HAS BEEN FOUND TO BIND TO THE VEGETATIVE DEVELOPMENT OF THE PLANT. 500MG L^-1 DOSES ARE USED WHEN USED AS COMMERCIAL SUBSTRATE IN DIFFERENT TYPES OF PLANTS AND LEAF WEIGHT. "WHEN USING CHICKEN BED SUBSTRATE, A DOSE OF  300 MG L^-1 IS MOST EFFECTIVE IN ALL VARIABLES EVALUATED." FOR BOVINE MANURE THE DOSE OF 100 MG L^-1 IS MORE EFFECTIVE WITH PLANT SIZE.