Microbial Activity Is Constrained by the Quality of Carbon and Nitrogen under Long-term Saline Water Irrigation

ABSTRACT The objective of this research was to evaluate the growth and formation of fresh and dry weight of ‘Crioula’ guava rootstock irrigated with waters of different saline levels and nitrogen (N) doses, in an experiment conducted in plastic tubes under greenhouse conditions. The experimental design was randomized blocks, in a 5 x 4 factorial scheme with four replicates, and the treatments consisted of five levels of water electrical conductivity - ECw (0.3, 1.1, 1.9, 2.7 and 3.5 dS m-1) and four N doses (70, 100, 130 and 160% of the N dose recommended for the cultivation of guava seedlings, cv. ‘Paluma’). The dose referring to 100% corresponds to 773 mg of N dm-3. The highest growth of ‘Crioula’ guava rootstock was obtained with ECw of 0.3 dS m-1 and fertilization of 541.1 mg N dm-3 of soil; increasing N doses did not reduce the deleterious effect of the salt stress on the growth and phytomass formation of ‘Crioula’ guava rootstock; irrigation with water of up to 1.75 dS m-1, in the production of guava rootstocks, promotes acceptable reduction of 10% in growth and quality of the seedlings.

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Growth and quality of soursop (Annona muricata, L.) seedlings under saline stress and hydrogen peroxide (H2O2)

Australian Journal of Crop Science ◽

10.21475/ajcs.19.13.10.p1857 ◽

2017 ◽

pp. 1643-1649

Author(s):

André Alisson Rodrigues da Silva ◽

Luana Lucas de Sá Almeida Veloso ◽

Geovani Soares de Lima ◽

Carlos Alberto Vieira de Azevedo ◽

Hans Raj Gheyi ◽

...

Keyword(s):

Electrical Conductivity ◽

Hydrogen Peroxide ◽

Irrigation Water ◽

Saline Water ◽

Saline Stress ◽

Annona Muricata ◽

Relative Growth ◽

Saline Water Irrigation ◽

Sensitive Variable

This study aimed to evaluate growth and quality of soursop seedlings cv. Morada Nova, as a function of saline water irrigation and exogenous applications of hydrogen peroxide (H2O2), under greenhouse conditions. The experimental design used was randomized blocks in 5 x 5 factorial scheme, corresponding to the combination of five levels of irrigation water electrical conductivity – ECw (0.7, 1.4, 2.1, 2.8 and 3.5 dS m-1) and five concentrations of hydrogen peroxide (0, 25, 50, 75 and 100 µM). The results showed that Hydrogen peroxide concentrations were applied by soaking the seed for 24 h and by spraying on all leaves of soursop seedlings. Irrigation water above electrical conductivity of 0.7 dS m-1 negatively affected growth and quality of soursop seedlings cv. Morada Nova. The dry phytomass of root was the most sensitive variable to saline stress. Hydrogen peroxide concentrations of 31 and 100 µM led to highest relative growth rate in leaf area and dry phytomass of leaves and stem, respectively. The quality of soursop seedlings cv. Morada Nova was not compromised by using water with electrical conductivity of 3.5 dS m-1 in irrigation.

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Response of ammonia-oxidizing Bacteria and Archaea to long-term saline water irrigation in alluvial grey desert soils

Scientific Reports ◽

10.1038/s41598-019-57402-x ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Huijuan Guo ◽

Lijuan Ma ◽

Yongchao Liang ◽

Zhenan Hou ◽

Wei Min

Keyword(s):

Saline Water ◽

Ammonia Oxidizing Bacteria ◽

Desert Soils ◽

Saline Water Irrigation

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The Effect of Salinity on the Growth of Lavender Species

Water ◽

10.3390/w12030618 ◽

2020 ◽

Vol 12 (3) ◽

pp. 618

Author(s):

Angeliki T. Paraskevopoulou ◽

Anna Kontodaimon Karantzi ◽

Georgios Liakopoulos ◽

Paraskevi A. Londra ◽

Konstantinos Bertsouklis

Keyword(s):

Water Quality ◽

Plant Growth ◽

Saline Water ◽

Saline Irrigation ◽

Saline Water Irrigation ◽

Lavandula Stoechas ◽

Stem Necrosis ◽

Nursery Crops ◽

Alternative Water

Long term degradation of water quality from natural resources has led to the use of alternative water resources for irrigation that are saline. Saline water irrigation in floriculture for the production of nursery crops requires an understanding of plant response. The pot growth of four lavender species (Lavandula angustifolia, Lavandula dentata var. dentata, Lavandula dentata var. candicans and Lavandula stoechas) irrigated with water containing different concentrations of NaCl (0, 25, 50, 100 and 200 mM) was investigated under greenhouse conditions. Overall results of different plant growth variables were consistent, showing a significant decrease at 100 and 200 mM NaCl. All lavender species showed signs of salinity stress that included chlorosis, followed by leaf and stem necrosis at NaCl concentrations greater than 50 mM. L. dentata var. dentata showed the greatest plant growth followed in descending order by L. dentata var. candicans, L. stoechas and L. angustifolia. Despite greater growth of L. dentata var. dentata, the appearance of L. dentata var. candicans was “healthier”. In areas with saline irrigation water, L. dentata var. dentata and L. dentata var. candicans are proposed for the production of lavender nursery crops.

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YIELD AND QUALITY OF CARROT AS AFFECTED BY SOIL SALINITY FROM LONG-TERM IRRIGATION WITH SALINE WATER

Acta Horticulturae ◽

10.17660/actahortic.2000.537.73 ◽

2000 ◽

pp. 621-628 ◽

Cited By ~ 7

Author(s):

S. De Pascale ◽

G. Barbieri

Keyword(s):

Soil Salinity ◽

Saline Water ◽

Yield And Quality

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Saline water irrigation and gypsum amendment effects on the quality of peanut seeds

European Journal of Agronomy ◽

10.1016/s1161-0301(14)80123-8 ◽

1994 ◽

Vol 3 (2) ◽

pp. 169-174 ◽

Cited By ~ 2

Author(s):

B. Heuer ◽

A. Schaffer ◽

A. Meiri ◽

H. Badani ◽

B. Ben-Dor ◽

...

Keyword(s):

Saline Water ◽

Saline Water Irrigation

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EFFECT OF SALINE WATER IRRIGATION ON FRUIT AND WINE QUALITY OF CABERNET SAUVIGNON ON TWO ROOTSTOCKS

Acta Horticulturae ◽

10.17660/actahortic.2003.617.14 ◽

2003 ◽

pp. 101-109 ◽

Cited By ~ 2

Author(s):

B.A. Bravdo ◽

T. Masci ◽

D. Bodenevich ◽

N. Bar

Keyword(s):

Saline Water ◽

Cabernet Sauvignon ◽

Wine Quality ◽

Saline Water Irrigation

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The Clogging Rules of Ceramic Emitter in Irrigation Using Saline Water with Different EC

Agronomy ◽

10.3390/agronomy9080436 ◽

2019 ◽

Vol 9 (8) ◽

pp. 436

Author(s):

Huifang Chen ◽

Yanfang Liu ◽

Junying Chen ◽

Lin Zhang ◽

Yaohui Cai ◽

...

Keyword(s):

Electrical Conductivity ◽

Calcium Carbonate ◽

Growth Process ◽

Saline Water ◽

Irrigation System ◽

Water Infiltration ◽

Saline Water Irrigation ◽

Discharge Ratio ◽

Main Component

Infiltration irrigation with saline water is a more effective method than drip irrigation to alleviate water scarcity worldwide, but so far, no report has discussed the clogging rules of ceramic emitters, a major component of infiltration irrigation system. To explore the clogging mechanism of ceramic emitter in saline water infiltration irrigation system, we used four kinds of saline water sources with electrical conductivity (EC) of 0.18, 1.74, 3.78, and 7.74 ds/m, respectively. In addition, we specifically investigated the law of discharge ratio variation (Dra) of ceramic emitters, as well as the composition and growth process of clogging substance. The results indicated that the Dra of ceramic emitters decreased in the process of saline water irrigation, and the higher the EC, the more obvious the decrease. The calcium carbonate (CaCO3) was the main component of the clogging substance in the inner wall of ceramic emitters. The clogging part was a layer on the inner wall of the emitters rather than the pores in the walls, and the clogging did not occur suddenly. Instead, it was caused by the long–term accumulation of the clogging substance. Moreover, with the increase of EC, the flocculation between the clogging particles in the water was enhanced and thus promoted the formation of stable and compact aggregates, which fundamentally led to the clogging acceleration of ceramic emitters. This clogging mechanism of ceramic emitters can provide some theoretical reference for the establishment of anti-clogging strategy.

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