Cattle manure and N-urea in radish crop (Raphanus sativus)

• Autor(a) principal: Mendoza Cortez, Juan W. [UNESP]
• Data de Publicação: 2010
• Outros Autores: Cecilio Filho, Arthur B. [UNESP], Coutinho, Edson Luiz Mendes [UNESP], Alves, Anarlete [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.4067/S0718-16202010000100004; http://hdl.handle.net/11449/3386
• topic: Raphanus sativus; Fertilization; Yield

J.W. Mendoza Cortez, A.B. Cecilio Filho, E.L. Coutinho, and A. Alves. 2010. Cattle manure and N-urea in radish crop (Raphanus sativus). Cien. Inv. Agr. 37(1): 45 - 53. This work was carried out in Jaboticabal (575 m altitude, 21 degrees 15' 22 '' S and 48 degrees 15' 58 '' W), São Paulo, Brazil, aiming to investigate the effects of cattle manure and nitrogen (urea) doses on radish height and yield. Randomized blocks were used with a 2x4x4 factorial scheme and 3 replications. The treatments were combinations of cultivars (25 and 19), cattle manure doses (0, 25, 50, and 75 t ha(-1) dry basis) and N doses (0, 60, 120 and 180 kg ha(-1)). Increased cattle manure and urea doses provided higher plant height and commercial yield in both cultivars, but the N produced more significant effects than the cattle manure. The maximum commercial yield of cultivar (cv) 19 (20.34 t ha(-1)) was obtained using 75 t ha(-1) of cattle manure and 139 kg ha(-1) of N, whereas that of cv 25 (11.90 t ha(-1)) occurred with 75 t ha(-1) of cattle manure and 180 kg ha(-1) of N. The maximum economic efficiency doses for cv. 25 were 65.1 t ha(-1) and 180 kg ha(-1) of cattle manure and N, respectively, whereas those for cv 19 were 63.6 t ha(-1) and 144.7 kg ha(-1) of cattle manure and N, respectively.