Saline water irrigation strategies and potassium fertilization on physiology and fruit production of yellow passion fruit

被引：16
|
作者：
de Lima, Geovani S. [1 ]
Pinheiro, Francisco W. A. [1 ]
Gheyi, Hans R. [1 ]
Soares, Lauriane A. dos A. [2 ]
Sousa, Pedro F. do N. [2 ]
Fernandes, Pedro D. [1 ]
机构：
[1] Univ Fed Campina Grande, Programa Posgrad Engn Agr, Campina Grande, Paraiba, Brazil
[2] Univ Fed Campina Grande, Unidade Acad Ciencias Agr, Pombal, PB, Brazil
来源：
REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL | 2022年 / 26卷 / 03期
关键词：
Passiflora edulis Sims; salt stress; osmoregulation; SALT STRESS; LIPID-PEROXIDATION; GAS EXCHANGES; CHLOROPHYLL; GROWTH; PLANTS; FLUORESCENCE; RESPONSES; PIGMENTS; SOIL;
D O I：
10.1590/1807-1929/agriambi.v26n3p180-189
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The objective of this study was to evaluate the effects of saline water irrigation management strategies and potassium doses on the concentration of photosynthetic pigments, gas exchange, and fruit production of 'BRS GA1 yellow passion fruit. The experiment was carried out under field conditions using a randomized block design, with treatments based on a 6 x 2 factorial scheme, related to six management strategies for irrigation with saline water (irrigation with low-salinity water throughout the crop cycle-WS; irrigation with high-sa_inity water in the vegetative stage-VE; flowering stage-FL; fruiting stage-FR; and successively in vegetative/flowering stages-VE/FL and vegetative/fruiting stages-VELR) and two doses of potassium (60 and 100% of the recommendation), with four replicates. The dose of 100% recommendation corresponded to 345 g of K2O plant(-1) year(-1). High electrical conductivity irrigation water (4.0 dS m(-1)) was used in different phenological stages according to treatment, alternating with water of low electrical conductivity (1.3 dS m(-1)). The synthesis of chlorophyll a and b, stomatal conductance, instantaneous carboxylation efficiency and water use efficiency of 'BRS GA1' yellow passion fruit were reduced under irrigation with water of 4.0 dS m(-1) in all strategies adopted. Fertilization with 60% of the K recommendation promoted greater number of fruits and yellow passion fruit yield. Irrigation with 4.0 dS m(-1) water in the vegetative/flowering and flowering stages reduced the yield of yellow passion fruit.
引用
收藏
页码：180 / 189
页数：10
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