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Ciência e Agrotecnologia

versão impressa ISSN 1413-7054versão On-line ISSN 1981-1829

Resumo

GASSI, Rosimeire Pereira et al. Doses of phosphorus and chicken manure on burdock yield. Ciênc. agrotec. [online]. 2009, vol.33, n.3, pp.692-697. ISSN 1413-7054.  https://doi.org/10.1590/S1413-70542009000300005.

The aim of this study was to evaluate the effect of incorporating phosphorus (P) and chicken manure (CM) to the soil on the growth and yield of burdock. Five doses of phosphorus (4.3, 25.8, 43.0, 60.2, and 81.7 kg ha-1) in triple super phosphate (TSP) form and five doses of semi-decomposed chicken manure (1, 6, 10, 14, and 19 t ha-1) were studied. Nine treatments were defined using Plan Puebla III experimental matrix. Treatments were arranged in a randomized block experimental design with four replications. Maximum height of burdock (129.87 cm) was reached on the 113th day after transplant (DAT) with 60.2 and 14 t ha-1 of phosphorus and chicken manure treatments, respectively. The greatest yields of leaf fresh matter were 22.87 Mg ha-1 when 81.7 kg ha-1 P was used and 18.38 Mg ha-1 with dose of 19 t ha-1 CM. The highest yields of leaf dry matter were related to the highest doses of chicken manure. The greatest yields of root fresh matter were 2.44 Mg ha-1 and 2.00 Mg ha-1, which were reached with treatments of 81.7 kg ha-1 P and 1 t ha-1 CM and 4.3 kg ha-1 P and 19 t ha-1 CM, respectively. The highest yield of root dry matter was 0.33 Mg ha-1 obtained with the greatest doses of P and intermediary doses of CM.

Palavras-chave : Medicinal plants; Arctium lappa; fertilization; organic residue.

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