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

Juan W Mendoza Cortez, Arthur B Cecílio Filho, Edson L Coutinho, Anarlete Alves
2010 Ciencia e Investigación Agraria  
J.W. Mendoza Cortez, A.B. Cecílio 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°15΄ 22˝ S and 48° 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
more » ... 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.
doi:10.4067/s0718-16202010000100004 fatcat:vaktdzwqpbhovjxx7qbnltia7y