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Avaliação da produção de batata-doce em função de níveis de adubação orgânica

2010; Editora da Universidade Estadual de Maringá (Eduem); Volume: 32; Issue: 4 Linguagem: Inglês

10.4025/actasciagron.v32i4.4150

1807-8621

Carlos Henrique de Brito, João Felinto dos Santos, Maria Do Carmo Cardoso Almeida dos Santos,

Growth and nutrition in plants

The present study evaluated the effect of organic fertilization in the total production of sweet potato. The experiment was performed in the period between July and November 2007, at the Lagoa Seca Experimental Station, Paraíba, Brazil. The experimental design was randomized blocks with five treatments (0, 3, 6, 9 and 12 t ha-1), in four replications. The plot consisted of four 3.6 m long ridges, spaced of 0.80 m between ridges and 0.30 m between plants; the two central ridges were harvested. The variables studied were: total yield, large and small sweet potato roots. The production of large and small roots, total yield per plant (14.20, 3.84 and 18.03 t ha-1) of sweet potato, responded positively in a linear fashion to increasing doses of poultry litter. The fertilization with poultry litter increased the yield of large, small and total roots of sweet potato.