INFLUÊNCIA DE DIFERENTES NÍVEIS DE SALINIDADE SOBRE ASPECTOS MORFOFISIOLÓGICOS DE MUDAS DE Eucalyptus urograndis

Lopes, Thaís de Camargo; Klar, Antônio Evaldo

doi:10.15809/irriga.2009v14n1p68-75

Cited by 7 publications

(3 citation statements)

References 6 publications

(9 reference statements)

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“…Already in the interval of 15-90 DAT, the highest value (0.039 mm day -1 ) was observed at ECw of 2.0 dS m -¹. The reduction of growth from this point on (1.9 and 2.0 dS m -¹, respectively) may be associated with the energy expenditure for the synthesis of osmotically active organic compounds necessary to the processes of compartmentalization in the regulation of the transport of ions (LOPES & KLAR 2009).…”

Section: Resultsmentioning

confidence: 91%

Formation of soursop seedlings irrigated using waters with different salinity levels and nitrogen fertilization

Veloso¹,

Nobre²,

Souza³

et al. 2018

Biosci. J.

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Using saline waters in agriculture has become common in many regions worldwide, but some techniques have been developed to enable the use of these waters in order not to harm the crop. Thus, this study aimed to evaluate the growth of soursop seedlings, cv. 'Morada Nova', under interaction between salt stress and nitrogen (N) fertilization. The experiment was conducted in a greenhouse in randomized block design, in 5 x 4 factorial scheme, with 4 replicates, formed by the combination of five levels of irrigation water electrical conductivity -ECw (0.3; 1.1; 1.9; 2.4 and 3.5 dS m -¹) and four N doses (70, 100, 130 and 160%). The dose relative to 100% corresponded to 100 mg of N dm -³ of soil. The interaction between N doses and water salinity levels did not affect the seedling production stage of soursop, cv. 'Morada Nova'. The growth of 'Morada Nova' soursop seedlings subjected to different water salinity levels was less affected in the initial stage (45 days after treatment application). Water with ECw of 2.0 dS m -¹ can be used to produce soursop seedlings, because it leads to an acceptable mean growth reduction of 10%. N doses higher than 70 mg dm -³ do not either attenuate salt stress or promote higher growth of soursop seedlings, cv. 'Morada Nova'.

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Section: Resultsmentioning

confidence: 91%

Formation of soursop seedlings irrigated using waters with different salinity levels and nitrogen fertilization

Veloso¹,

Nobre²,

Souza³

et al. 2018

Biosci. J.

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“…The increased interest in the use of eucalyptus for diverse purposes, as timber or otherwise and for the recovery of degraded areas has expanded the species exploitation. Population growth increases the demand for timber and cultivation areas, requiring the exploitation of marginal areas (Lopes and Klar, 2009). Eucalyptus is quite adaptable to different conditions of heat, light and dryness.…”

Section: Introductionmentioning

confidence: 99%

Growth of eucalyptus plants irrigated with saline water

Souza¹,

Freitas²,

Araújo³

et al. 2015

Afr. J. Agric. Res.

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Soil salinity is a major abiotic factor limiting crop production but an amendment with compost, zeolite or unisal may mitigate the effects of salinity stress on plants. The objective of the present study was to determine the effects of compost, zeolite and unisal on growth of barley plant irrigated with diluted seawater. Barley was the grown on a calcareaus soil treated with compst, zeolite and unisal at the rates of 0 , 4, 8 and 12 % and irrigated with seawater diluted to electrical conductivity (EC) levels of 2.5, 5.0 and 7.5 dS m-1 while tap water was as the control (EC = 0.44 dS/m. Irrigation with 5.0 and 7.5 dS m-1 saline waters significantly suppressed fresh and dry weight of barely plants. However, a substantial increase in plant biomass of salt stressed barley was observed with the three amendments followed the order, compost > unisal > unisal. The application of compost, zeolite or unisal also enhanced K + , Ca +2 and Mg +2 absorption and decreased Na + , Cl-and SO4 = in barely shoot. Post-harvest soil analysis showed high EC values of soil due to saline water irrigation but concentrations were lower in soils treated with the tested amendments especially zeolite. The overall results indicated that soil amendment with compost or zeolite could effectively ameliorate salinity stress and improve nutrient balance barley plant grown on a calcareous soil.

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“…4), there is a decreasing linear behavior with the increase in the electrical conductivity of the irrigation water at all the nitrogen doses tested (100, 200 and 300 mg dm , respectively. The reductions occurring in this period are reflections of energy expenditure for the synthesis of osmotically active organic compounds that are essential in the compartmentalization of salts and regulation of ion transport [26].…”

Section: And 03 M -1mentioning

confidence: 99%

Effect of Nitrogen Fertilization on the Growth and Quality of Tamarind Seedlings Irrigated with Saline Water

Fátima

Silva

Nóbrega

et al. 2019

JEAI

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Aims: The objective of this work was to evaluate the effect of nitrogen fertilization on the production of Tamarindus indica L. seedlings irrigated with saline water. Study Design: A randomized complete block design was used in a 4 x 4 factorial scheme, whose factors were the electrical conductivity levels of the irrigation water. Place and Duration of Study: The work was conducted under protected environment conditions (greenhouse) at the Federal University of Campina Grande, Center for Agro-Food Sciences and Technology, Campus of Pombal-PB, Brazil, in the period from January and March 2017. Methodology: Effects of doses of 0, 100, 200 and 300 mg of nitrogen (N) dm-3 and electrical conductivity levels of the irrigation water (ECw) (0.3, 2.1, 3.7 and 5.2 dS m-1) on growth of Tamarindus indica L. have been studied. Results: The growth of the seedlings was reduced by the increase of the electrical conductivity of the irrigation water, however, irrigation with ECw water of 2.15 dS m-1, promotes acceptable reductions of 10% in the morphology of the tamarind tree. Conclusion: The use of nitrogen fertilization with urea did not attenuate the deleterious effects of irrigation water salinity or promoted improvements of the quality of the tamarind seedlings.

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INFLUÊNCIA DE DIFERENTES NÍVEIS DE SALINIDADE SOBRE ASPECTOS MORFOFISIOLÓGICOS DE MUDAS DE Eucalyptus urograndis

Cited by 7 publications

References 6 publications

Formation of soursop seedlings irrigated using waters with different salinity levels and nitrogen fertilization

Formation of soursop seedlings irrigated using waters with different salinity levels and nitrogen fertilization

Growth of eucalyptus plants irrigated with saline water

Effect of Nitrogen Fertilization on the Growth and Quality of Tamarind Seedlings Irrigated with Saline Water

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