Photochemical efficiency and growth of sugar apple under irrigation with saline water and foliar nitrogen

Q3 Agricultural and Biological Sciences

Comunicata Scientiae Pub Date : 2023-09-20 DOI:10.14295/cs.v14.4020

Reynaldo Teodoro De Fatima, Jackson Silva Nóbrega, Jean Télvio Andrade Ferreira, Wilma Freitas Celedônio, João Everthon da Silva Ribeiro, Walter Esfrain Pereira, None Antônio Gustavo de Luna Souto, Geovani Soares de Lima

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引用次数: 0

Abstract

Salt stress has compromised the worldwide expansion of fruit farming by causing damage to light energy regulation and crop growth, which can be mitigated by applying foliar nitrogen (N). From this perspective, this study aimed to evaluate the chlorophyll contents, fluorescence, and the growth of sugar apple seedlings under irrigation with saline water and foliar N fertilisation. The experiment was conducted in a plant nursery and following a randomized block design referring to five electrical conductivity levels of irrigation water (0.5, 1.15, 2.75, 4.35, and 5.0 dS m-1) and five foliar N levels (0.0, 0.33, 1.15, 1.97, and 2.3 g L-1), with four replications and two plants per plot, totaling nine combinations generated by the Box central composite design. Irrigation water salinity reduces the growth of sugar apple seedlings irrigated with conductivity levels over 1.7 dS m-1 at 90 days after emergence. Foliar N fertilisation increased the photochemical efficiency and growth of sugar apple seedlings. The foliar application of 1.93 g L-1 mitigate the deleterious effects of water salinity on the photochemical efficiency and growth of sugar apple seedlings.

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盐水和叶面氮肥灌溉下苹果光化学效率与生长

盐胁迫通过对光能调节和作物生长造成损害而影响了世界范围内水果种植的发展，而叶面施氮可以缓解这一影响。从这个角度来看，本研究旨在评估盐水和叶面施氮灌溉下苹果幼苗的叶绿素含量、荧光和生长。试验采用Box中心组合设计，采用5个灌溉水电导率水平(0.5、1.15、2.75、4.35和5.0 dS m-1)和5个叶片氮水平(0.0、0.33、1.15、1.97和2.3 g L-1)， 4个重复，每地块2株，共9个组合。灌溉水盐度降低了出苗后90 d电导率在1.7 dS m-1以上的苹果幼苗的生长。叶片施氮提高了苹果幼苗的光化学效率和生长。叶面施用1.93 g L-1可减轻水盐对苹果幼苗光化学效率和生长的有害影响。

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来源期刊

Comunicata Scientiae Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： The Comunicata Scientiae journal edited by Campus “Profa Cinobelina Elvas” of Federal University of Piauí (Brazil) publishes original articles, scientific notes and review articles (when invited by the editorial board), which present significant importance for Agrarian and Environmental Sciences in Portuguese, Spanish and preferentially, in English.