COMPETIÇÃO DE CULTIVARES DE ALFACE-AMERICANA NO SUL DE MINAS GERAIS
2006
Jony Eishi Yuri | Geraldo Milanez de Resende | José Hortêncio Mota | Rovilson José de Souza
Aiming to evaluate crisp head lettuce cultivars adapted to summer, showing tip burn¿s tolerance caused by calcium deficiency, an experiment was conducted in Santana da Vargem, MG, comprising the Lucy Brown, PSR 1114, PSR 1115, PSR 0110, PSR 5338, PSR 1530, PSR 0398 and Raider cultivars. A randomized complete blocks design with three replications was used. Total and commercial fresh mass, stem length and tip burn¿s tolerance caused by calcium deficiency were evaluated. The total fresh mass ranged between 538.8 and 894.4 g.plant-1, being PSR 1114; PSR 1115; PSR 5338 and Lucy Brown superior to the others, with 822.2; 833.3; 850.0 and 894.4 g plant-1, respectively. For commercial fresh mass and stem length there were no significant differences among the evaluated cultivars. Regarding tip burn¿s tolerance significant differences were observed. The Lucy Brown cultivar showed the highest incidence of this physiological disorder.
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