Response of Canola Seed Yield and Quality to Different Irrigation Water Salinity Levels, Irrigation Intervals and Sulphur Fertilizer Rates

This study aimed to evaluate the gas exchanges and growth of the purple passion fruit cultivar ‘BRS Rubi do Cerrado’ as a function of the salinity levels of the irrigation water and nitrogen fertilization. The research was conducted in pots adapted as drainage lysimeters, placed within a plant nursery, using a Regolithic Neosol of sandy texture, in the municipality of Pombal-PB, Brazil. A randomized block design was used, testing five levels of electrical conductivity of irrigation water (0.3, 1.1, 1.9, 2.7, and 3.5 dS m-1) associated with four doses of nitrogen (50, 75, 100, and 125% of the recommendation). The irrigation water salinity above 0.3 dS m-1 compromised the leaf area and the relative water content of the purple passion fruit ‘BRS Rubi do Cerrado’. High doses of nitrogen enhance the deleterious effects of irrigation water salinity on stomatal conductance, transpiration, internal CO2 concentration, CO2 assimilation rate, number of leaves, stem diameter, and height of purple passion fruit plants. When waters with salinity levels of up to 1.3 dS m-1 are used, the dose of 125 mg of N kg-1 of soil is recommendation for providing increases in the CO2 assimilation rate of the purple passion fruit ‘BRS Rubi do Cerrado’ at 70 days after sowing (DAS). Water salinity increases electrolyte leakage, regardless of nitrogen doses.

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Gas exchange in yellow passion fruit under irrigation water salinity and nitrogen fertilization

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v26n2p135-141 ◽

2022 ◽

Vol 26 (2) ◽

pp. 135-141

Author(s):

José A. C. Wanderley ◽

Carlos A. V. de Azevedo ◽

Marcos E. B. Brito ◽

Fagner N. Ferreira ◽

Mailson A. Cordão ◽

...

Keyword(s):

Gas Exchange ◽

Irrigation Water ◽

Nitrogen Fertilization ◽

Co2 Concentration ◽

Passion Fruit ◽

Water Salinity ◽

Irrigation Water Salinity ◽

Electrical Conductivities ◽

Salinity Levels ◽

Internal Co2

ABSTRACT The objective of this study was to evaluate the gas exchange of ‘Redondo Amarelo’ passion fruit seedlings under the mitigating action of nitrogen fertilization on the salinity of irrigation water. The experiment was carried out in a greenhouse of the Universidade Federal de Campina Grande (CCTA-UFCG), Campus of Pombal, PB, Brazil, The experimental design was in randomized blocks, split plots, comprising five irrigation water electrical conductivities (plot) (ECw) (0.3; 1.0; 1.7; 2.4 and 3.1 dS m-1) and five doses of nitrogen (subplot) (60; 80; 100; 120 and 140% of 300 mg of N dm-3), in five blocks. Plants were grown in pots (Citropote JKS®) with volume of 3.780 mL, filled with soil, bovine manure, wood shavings in a proportion of 2:1:0.5 (mass basis), respectively. Water with salinity levels was applied in the period from 40 to 85 days after sowing. The internal CO2 concentration, transpiration, stomatal conductance and photosynthesis were measured at 55 and 70 days after sowing. There was an attenuating effect of nitrogen doses at irrigation water electrical conductivities of 1.7 and 2.4 dS m-1 on photosynthesis at 55 DAS. Irrigation water salinity reduces most of the variables evaluated, especially at the highest level studied (3.1 dS m-1).

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Effects of Irrigation Water Salinity on Soil Properties, N2O Emission and Yield of Spring Maize under Mulched Drip Irrigation

Water ◽

10.3390/w11081548 ◽

2019 ◽

Vol 11 (8) ◽

pp. 1548 ◽

Cited By ~ 2

Author(s):

Chenchen Wei ◽

Fahu Li ◽

Peiling Yang ◽

Shumei Ren ◽

Shuaijie Wang ◽

...

Keyword(s):

Irrigation Water ◽

Brackish Water ◽

Drip Irrigation ◽

Maize Yield ◽

N2o Emission ◽

Soil Salinization ◽

Irrigation District ◽

Water Salinity ◽

Irrigation Water Salinity ◽

Salinity Levels

Brackish water has been widely used to irrigate crops to compensate for insufficient freshwater water supply for agricultural use. The goal of this research was to determine an efficient brackish water use method to increase irrigation efficiency and reduce N2O emission. To this end, we conducted a field experiment with four salinity levels of irrigation water (1.1, 2.0, 3.5, and 5.0 g·L−1 with drip irrigation) at Hetao Irrigation District (Inner Mongolia, China) in 2017 and 2018. The results show that irrigation with 3.5–5.0 g·L−1 water salinity increased the soil salinity compared with irrigation using 1.1–2.0 g·L−1 water salinity. The soil water content with 5.0 g·L−1 brackish water irrigation was significantly higher than with 1.1–3.5 g·L−1 water salinity due to the effect of salinity on crop water uptake. The overall soil pH increased with the increase in irrigation water salinity. Saturated soil hydraulic conductivity decreased with the increase in irrigation water salinity. These results indicate that brackish water irrigation aggravates the degree of soil salinization and alkalization. The soil N2O cumulative flux resulting from irrigation with 5.0 g·L−1 water salinity was 51.18–82.86% higher than that resulting from 1.1–3.5 g L−1 water salinity in 2017, and was 32.38–44.79% higher than that resulting from 1.1–2.0 g·L−1 in 2018. Irrigation with brackish water reduced maize yield, and the reduction in yield in 2018 was greater than that in 2017, but irrigation with 2.0 g·L−1 brackish water did not significantly reduce maize yield in 2017. These results suggest that reducing the salinity of irrigation water may effectively reduce soil N2O emission, alleviate the degree of soil salinization, and increase crop yield.

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Growth and yield of sugarcane irrigated with brackish water and leaching fractions

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v22n3p170-175 ◽

2018 ◽

Vol 22 (3) ◽

pp. 170-175 ◽

Cited By ~ 5

Author(s):

Raquele M. de Lira ◽

Ênio F. de F. e Silva ◽

Djalma E. Simões Neto ◽

José A. Santos Júnior ◽

Breno L. de C. Lima ◽

...

Keyword(s):

Irrigation Water ◽

Brackish Water ◽

Irrigation Management ◽

Growth And Yield ◽

Water Salinity ◽

Molar Ratio ◽

Irrigation Water Salinity ◽

Randomized Experimental Design ◽

Salinity Levels ◽

Leaching Fraction

ABSTRACT The objective was to evaluate the growth and yield of sugarcane irrigated with brackish water and leaching fractions. A completely randomized experimental design was used, in a 5 x 2 factorial scheme, with four replicates. The treatments consisted of five irrigation water salinity levels (0.5, 2.0, 3.5, 5.0 and 6.5 dS m-1) and two leaching fractions (0 and 0.17), corresponding to 100 and 120% of the crop evapotranspiration. The irrigation management was performed daily. Irrigation water salinity levels were obtained by adding NaCl and CaCl2 to the public-supply water, in order to obtain a molar ratio between Na:Ca of 1:1. The following measurements were taken: height and stem diameter; number of tillers; number of leaves and leaf area with monthly frequency between 60 and 300 days after planting (DAP). It was concluded that irrigation water salinity negatively influenced the variables of growth and yield in the sugarcane, and the leaching fraction of 0.17 was capable of reducing the deleterious effects of the salts on the plants.

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Responses of '0900 Ziraat' Sweet Cherry Variety Grafted on Different Rootstocks to Salt Stress

Notulae Botanicae Horti Agrobotanici Cluj-Napoca ◽

10.15835/nbha4319754 ◽

2015 ◽

Vol 43 (1) ◽

pp. 214-221 ◽

Cited By ~ 1

Author(s):

Cenk KÜÇÜKYUMUK ◽

Halit YILDIZ ◽

Zeliha KÜÇÜKYUMUK ◽

Ali ÜNLÜKARA

Keyword(s):

Irrigation Water ◽

Sweet Cherry ◽

Prunus Avium ◽

Water Salinity ◽

Research Station ◽

Growing Period ◽

Irrigation Water Salinity ◽

Salinity Levels ◽

One Year ◽

Cherry Trees

This study was conducted to determine the responses of '0900 Ziraat' sweet cherry cultivar grafted on mazzard (Prunus avium L.) and mahaleb (P. mahaleb L.) rootstocks, to different irrigation water salinity levels. One year old sweet cherry trees were planted in 50-liter pots at Eğirdir Fruit Research Station (Isparta, Turkey). Four different irrigation water salinity levels (S1=0.3 dS m-1, S2=2.0 dS m-1, S3=4.0 dS m-1 and S4=6 dS m-1) were used for both variety/rootstock combinations. The results showed that sweet cherry trees grafted on mahaleb rootstocks extracted more water under saline conditions than the ones grafted on mazzard. Water salinity levels caused more damage on 0900/mazzard than on 0900/mahaleb. Towards the end of the growing period, plant deaths were detected in S3 and S4 treatments. While leaf water potential (LWP) ranged from -1.54 to -3.33 MPa, stomatal conductance ranged from 26.8 to 199.5 mmol m-2 s-1. It was determined that both parameters decreased towards the end of the growing period for all treatments. Sodium (Na) uptake was excluded by 0900/mahaleb rootstocks, but chloride (Cl−) uptake was excluded only for higher saline conditions. As a result, mahaleb (P. mahaleb L.) rootstock could be recommended to be used as rootstock for sweet cherry culture under saline conditions.

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