Irrigação com águas salinas e aplicação de prolina foliar em cultivo de pimentão ‘All Big’

Lima, Geovani Soares de; Santos, João Batista dos; Soares, Lauriane Almeida dos Anjos; Gheyi, Hans Raj; Nobre, Reginaldo Gomes; Pereira, Rennan Fernandes

doi:10.14295/cs.v7i4.1671

Cited by 38 publications

(41 citation statements)

References 8 publications

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“…These results agreed with those reported by various authors who studied the bell pepper crop under saline stress conditions, cultivated in either soil (Leonardo et al, 2007;Lima et al, 2016) or substrate (Arruda et al, 2011;Rubio et al, 2011;Nunes et al, 2013;Furtado et al, 2017;Lima et al, 2017). Reductions in fruit size and weight due to saline stress and, consequently, in the economic performance of the crop, are caused by physiological and biochemical changes in the cells or at the molecular level (Munns & Tester, 2008).…”

Section: F1 F2 F3 F4 F5supporting

confidence: 90%

“…The first one was the high number of fruits with blossom-end rot, especially in treatments F1 and F2, a typical symptom of Ca deficiency in the fruits resulting from high Na + concentration, which was previously reported by various authors (Arruda et al, 2011;Nunes et al, 2013;Rubio et al, 2009). The second reason was the occurrence of small fruits in plants fertigated with nutrient solutions of higher salinity, confirming the results observed by other authors (Lima et al, 2016;Furtado et al, 2017).…”

Section: F1 F2 F3 F4 F5supporting

confidence: 87%

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Bell pepper production under saline stress and fertigation with different K+/Ca2+ ratios in a protected environment

et al. 2020

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Bell peppers are sensitive to salinity; therefore, it is necessary to find alternatives to reduce saline stress. An experiment was conducted in a greenhouse at Federal Rural University of the Semi-Arid Region, in Mossoró, Rio Grande do Norte State, Brazil, to evaluate the effects of salinity and K+/Ca2+ ratios on bell pepper production. The experimental design consisted of randomized blocks in a 5 x 4 factorial scheme with four replicates, corresponding to five K+/Ca2+ ratios (F1 = 3.3/1, F2 = 2.8/1, F3 = 2.2/1, F4 = 1.8/1, and F5 = 1.5/1) and four salinity levels in the nutrient solution using NaCl (1.75, 3.25, 4.75, and 6.25 dS m-1). The following parameters were evaluated: the number of fruits (total, marketable and unmarketable), the mean weight of fruits (marketable and unmarketable), fruit production (total, marketable and percentage of marketable fruits) and a salinity tolerance index. Generally, nutrient solution enrichment with K+ or Ca2+ did not cause significant increments in bell pepper yield. The fertigation treatments F2, F3, and F5 led to a higher bell pepper tolerance to salinity, allowing waters with higher salt concentrations to be used without causing a reduction in the yield.

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Section: F1 F2 F3 F4 F5supporting

confidence: 90%

Section: F1 F2 F3 F4 F5supporting

confidence: 87%

Bell pepper production under saline stress and fertigation with different K+/Ca2+ ratios in a protected environment

et al. 2020

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“…Proline concentrations were determined based on the work of Lima et al (2016), who observed higher growth of bell pepper plants cv. 'All Big' subjected to saline stress when proline concentration of 12.17 mM was used.…”

Section: Experiments Localization and Treatmentsmentioning

confidence: 99%

Morphophysiology of ‘Faga 11’ Cashew Rootstock Under Saline Water Irrigation and Exogenous Proline Application

Souza¹,

Nobre²,

Gheyi³

et al. 2018

JAS

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Due to the reduced availability of good-quality water in the semi-arid region of Northeast Brazil, the utilization of saline waters in irrigation became an alternative for the expansion of agriculture in this region. Thus, it is necessary to develop techniques which can make viable the use of these waters in agriculture. Given the above, this study aimed to evaluate the morphophysiology of 'FAGA 11' cashew rootstock subjected to different levels of irrigation water salinity and exogenous proline application through the leaves. The experiment was carried out in a greenhouse of the Federal University of Campina Grande, at the Center of Sciences and Agri-Food Technology, Campus of Pombal, PB, Brazil, in a randomized block design, in 5 × 4 factorial scheme, with three replicates and two plants per plot. Treatments consisted of different levels of irrigation water electrical conductivity-ECw (0.3; 1.0; 1.7; 2.4 and 3.1 dS m -1 ) combined with proline concentrations applied through the leaves-PC (0; 4; 8 and 12 mM). Irrigations with water up to ECw of 1.37 dS m -1 may be used as it causes an acceptable 10% reduction in the variables of morphology of cashew FAGA 11 seedlings. The proline concentrations tested, with the exception of the Dickson's quality index of seedlings, did not attenuate the deleterious effects of irrigation water salinity on the cashew FAGA 11 rootstock seedlings.

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“…These processes include translocation of carbohydrates to sink tissues, and in the diversion of sources of energy to other processes, such as osmotic adjustment, synthesis of compatible solutes, repair of damage caused by salinity, and maintenance of basic metabolic processes (Lucena, Siqueira, Martinez, & Cecon, 2012). In the bell peppers, G. S. Lima et al (2016) found that the increase in ECw from 0.6 to 3.0 dS m -1 resulted in a marked reduction in the growth in stem diameter, at 90 days after transplanting.…”

Section: Resultsmentioning

confidence: 99%

Gas exchanges, growth and production of okra cultivated with saline water and silicon fertilization

Lima

Souza

Nobre

et al. 2020

Semina: Ciênc. Agrár.

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Excess salts in water and/or soil are a critical factor that adversely affects the physiology and growth, besides limiting the production of crops in the semiarid region of Northeast Brazil. One way to reduce the effect of salt stress on plants is by using silicon (Si) fertilization. In this context, the objective of this study was to evaluate the gas exchange, growth, and production of okra cv. Valença as a function of irrigation with saline water and Si doses. The experiment was conducted in a greenhouse in the municipality of Pombal - PB, Brazil. The experimental design adopted was randomized blocks in a 5 × 2 factorial scheme corresponding to five levels of electrical conductivity of water ECw (0.3, 1.0, 1.7, 2.4, and 3.1 dS m-1) and two doses of Si fertilization (100 and 200 g of Si per plant), with four replicates. Salt stress increased the intercellular concentration of CO2 in the substomatal chamber and reduced the CO2 assimilation rate, instantaneous carboxylation efficiency, growth, and production of okra plants. Intrinsic water use efficiency and average weights of okra fruits were not influenced by irrigation with saline water and Si doses. The supply of 200 g Si per plant reduced the deleterious effect of salt stress on stomatal conductance and leaf area of okra, at 45 days after sowing but did not increase production.

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Irrigação com águas salinas e aplicação de prolina foliar em cultivo de pimentão ‘All Big’

Cited by 38 publications

References 8 publications

Bell pepper production under saline stress and fertigation with different K+/Ca2+ ratios in a protected environment

Bell pepper production under saline stress and fertigation with different K+/Ca2+ ratios in a protected environment

Morphophysiology of ‘Faga 11’ Cashew Rootstock Under Saline Water Irrigation and Exogenous Proline Application

Gas exchanges, growth and production of okra cultivated with saline water and silicon fertilization

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