Growth and production of cowpea cultivated with liming and nitrogen fertilization in the Eastern Amazon
| Autor: | Milton Garcia Costa, Eric Victor de Oliveira Ferreira, Thiago Caio Moura Oliveira, Gutierre Pereira Maciel, Francisco José Sosa Duque, Wanderson Cunha Pereira |
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| Jazyk: | English<br />Portuguese |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Revista Ceres, Vol 68, Iss 5, Pp 460-470 (2021) |
| Druh dokumentu: | article |
| ISSN: | 2177-3491 0034-737x |
| DOI: | 10.1590/0034-737x202168050011 |
| Popis: | ABSTRACT In the northeastern of Pará, cowpea is one of the main protein sources of the population. This study aimed to evaluate the effects of liming, the P and K mineral fertilization, and the combination of seed inoculation with Rhizobium associated with mineral N supplementation in the growth and production of cowpea cultivars. Two experiments were carried out in two consecutive years at the Federal Rural University of Amazonia (Capitão Poço-PA). A randomized block experimental design with subdivided plots was used with four replications, two cowpea cultivars (BRS Tapaihum and BRS Marataoã) and six fertilization and liming treatments: i) without fertilization and without liming; ii) P and K mineral fertilization, liming and seed inoculation with Rhizobium; iii) P and K mineral fertilization and seed inoculation with Rhizobium; iv) N, P and K mineral fertilization and liming; v) P and K mineral fertilization and liming; and vi) N, P and K mineral fertilization, liming and seed inoculation with Rhizobium. Cowpea responded to liming and P and K mineral fertilization, but not N fertilization. There was no difference between the supply of N through seed inoculation or mineral fertilization. Thus, it is suggested to inoculate seeds with Rhizobium in order to maintain the soil N reserve. |
| Databáze: | Directory of Open Access Journals |
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