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Gomes,Gil Mario Ferreira; Cândido,Magno José Duarte; Lopes,Marcos Neves; Maranhão,Theyson Duarte; Andrade,Dhones Rodrigues de; Costa,Jander Fabrício Martins; Silveira,Walisson Marques; Neiva,José Neuman Miranda. |
Abstract: The objective of this work was to evaluate the effects of combined phosphorus and nitrogen fertilization and of harvesting frequency on the chemical composition of 'Gigante' cactus pear (Opuntia ficus-indica) cladodes. The experiment was carried out in two municipalities, Quixadá and Tejuçuoca, in the state of Ceará, Brazil. Fertilization with nitrogen (urea) and phosphorus (single superphosphate) was done with nine doses, respectively: 10 and 70, 70 and 10, 70 and 70, 70 and 130, 100 and 100, 130 and 70, 130 and 130, 130 and 190, and 190 and 130 kg ha-1 per year, besides 100 kg ha-1 N and P2O5 per year as the control. The harvesting frequencies evaluated were annual and biannual. A randomized complete block design was adopted, in split plot,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Opuntia ficus-indica; Harvesting frequency; Nitrogen; Phosphorus. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000200221 |
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Lopes,Marcos Neves; Cândido,Magno José Duarte; Silveira,Walisson Marques; Maranhão,Theyson Duarte; Soares,Ismail; Pompeu,Roberto Cláudio Fernandes Franco; Silva,Rodrigo Gregório da; Carneiro,Maria Socorro de Souza. |
ABSTRACT The present study evaluated the accumulation and export of nutrients in cactus pear (Opuntia ficus-indica) cv. Gigante, fertilized with combinations of nitrogen (10, 70, 100, 130, and 190 kg ha−1 year−1 N) and phosphorus (10, 70, 100, 130, and 190 kg ha−1 year−1 P2O5) under annual and biennial harvests, in Quixadá and Tejuçuoca, using a split-plot randomized block design with four replications. In Quixadá, under annual and biennial harvests, the following orders of accumulation of macronutrients (in kg ha−1 year−1) were found, respectively: K (98.8) > Ca (87.2) > N (46.7) > Mg (26.8) > S (18.4) > P (2.04) and Ca (33.5) > K (31.1) > S (18.6) > N (12.9) > Mg (10.5) > P (0.81). In Tejuçuoca, under annual and biennial... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertilization; Harvest frequency; Nutritional demand. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100301 |
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