RESUMO:A salinidade é um os principais fatores que compromete a atividade fotossintética das plantas pela diminuição da concentração de clorofilas e carotenoides, e a adubação nitrogenada pode ser considerada uma técnica capaz de reduzir estes efeitos. Neste sentido, estudou-se a influência de doses de nitrogênio sobre os pigmentos fotossintéticos de mudas de goiabeira Crioula irrigadas com águas de diferentes salinidades. O experimento foi desenvolvido em casa de vegetação do CCTA da UFCG com delineamento em blocos casualizados, em esquema fatorial 5 x 4, correspondente a cinco níveis de condutividade elétrica da água de irrigação (CEa): 0,3; 1,1; 1,9; 2,7 e 3,5 dS m -1 e quatro doses de nitrogênio (N ABSTRACT: Salinity is a major factor that compromises the photosynthetic activity of plants by reducing the concentration of chlorophylls and carotenoids, and nitrogen fertilization can be considered a technique capable of reducing these effects. In this context, the influence of the increase of nitrogen doses on the photosynthetic pigments of Crioula guava seedlings irrigated with waters of different salinities was studied. The experiment was developed in a greenhouse of the CCTA UFCG with randomized block design, in a 5 x 4 factorial scheme, corresponding to five levels of electrical conductivity of the irrigation water (ECw): 0.3; 1.1; 1.9; 2.7 and 3.5
RESUMO:A adubação nitrogenada é uma técnica que vem sendo testada na mitigação do estresse salino em frutíferas, toda via, atenção especial deve ser dada a fonte de N a ser utilizada, devido as diferentes composições dos fertilizantes e os seus índices salinos. Neste sentido, Nordestina, independente da fonte de N utilizada. PALAVRAS-CHAVE: Annona muricata L., salinidade, fertilizantes nitrogenados SOURSOP GROWTH UNDER FERTILIZATION WITH DIFFERENT SOURCES OF NITROGEN AND IRRIGATION WITH SALINIZED WATERSABSTRACT: Nitrogen fertilization is a technique that has been tested in the mitigation of saline stress in fruit trees; however, special attention should be given to the source of N to be used, due to the different compositions of the fertilizers and their saline indices. In this sense, the effect of fertilization with different nitrogen sources on the growth of soursop irrigated with salinized waters after transplanting was studied. The experiment was carried out in a greenhouse 1 Doutorando em Eng. Agrícola CTRN/UFCG,
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.