Salt Stress and Ambience on the Production of Watermelon Seedlings

Silva, Francisco Barroso da; Sousa, Geocleber Gomes de; Sousa, José Thomas Machado de; Lessa, Carla Ingryd Nojosa; Silva, Fred Denílson Barbosa da

doi:10.1590/1983-21252020v33n224rc

Cited by 11 publications

(6 citation statements)

References 19 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Watermelon (Citrullus lanatus) is one of the main fruits produced and consumed in Brazil, being cultivated in almost all Brazilian states (Silva Junior et al, 2020), due to its great importance in Brazilian agribusiness (Ó et al, 2020). In Brazil, 2,278,186 tons of watermelon were produced in 2019, with the Northeast region accounting for 34.03% of the national production (IBGE, 2020).…”

Section: Introductionmentioning

confidence: 99%

Irrigation with saline water in the cultivation of mini watermelon under phosphate fertilization

Lima,

Silva,

Soares

et al. 2023

Braz. J. Biol.

View full text Add to dashboard Cite

The objective of this study was to evaluate the water status, photosynthetic pigments, and photochemical efficiency of mini watermelon plants under salt stress and phosphate fertilization. The experiment was conducted in pots under greenhouse conditions in Pombal, PB, Brazil. The experimental design used was randomized blocks in a 5 × 4 factorial scheme, with five levels of electrical conductivity of irrigation water - ECw (0.3, 1.3, 2.3, 3.3, and 4.3 dS m-1) and four doses of phosphorus (60, 80, 100, and 120% of the recommendation), with three replicates. The relative water content in the tissues decreased with the increase in ECw levels in all phosphorus doses, with decreases of 7.05, 7.81 and 8.83% per unit increase in ECw, in plants fertilized with 80, 100 and 120% P2O5. On the other hand, ECw levels increased electrolyte leakage, regardless of phosphorus doses of the recommendation. The synthesis of photosynthetic pigments and the quantum efficiency of photosystem II were inhibited by increasing water salinity from 0.3 dS m-1 in plants grown under phosphorus doses above 60% of the recommendation. Water salinity from 0.3 dS m-1 reduced chlorophyll b contents, initial, maximum, and variable fluorescence of mini watermelon plants, with a decrease of 11.86, 4.51, 4.53, and 4.54% per unit increment of ECw, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Irrigation with saline water in the cultivation of mini watermelon under phosphate fertilization

Lima,

Silva,

Soares

et al. 2023

Braz. J. Biol.

View full text Add to dashboard Cite

show abstract

“…The use of these resources for irrigation promotes a reduction in crop productivity by decreasing the water potential in the soil and exerts negative effects by specific ions (Silva et al, 2016). In relation to seedling production, Santos et al (2023) Production of zucchini seedlings un... this effect is more pronounced, because at this stage the seedlings are more susceptible to the effects of salts (Silva Junior et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Produção de mudas de abobrinha sob estresse salino em diferentes ambientes e substratos

et al. 2023

View full text Add to dashboard Cite

A interação entre ambiência agrícola e substratos alternativos pode atenuar o estresse salino em mudas de abobrinha. Com base nisso, o objetivo deste trabalho foi avaliar a produção de mudas de abobrinha irrigadas com águas salinas e cultivadas em diferentes tipos de ambientes e substratos. O delineamento experimental foi o inteiramente casualizado, utilizando esquema de parcelas subsubdivididas, sendo a parcela os três ambientes de cultivo (AM1= pleno sol; AM2= telado vermelho com 50% de sombreamento; AM3= telado preto com 50% de sombreamento), a subparcela os três substratos (SB1= biocarvão + solo; SB2= casca de arroz carbonizado + solo, SB3= esterco bovino + solo) e a subsubparcela as duas águas de irrigação (AI1= 0,8 e AI2= 2,5 dS m-1), com quatro repetições de vinte e cinco sementes. As variáveis analisadas foram: porcentagem de emergência (PE), índice de velocidade de emergência (IVE), tempo médio de emergência (TME), velocidade média de emergência (VME), diâmetro do caule (DC), altura de plântula (AP), comprimento da raiz (CR), massa seca da parte aérea (MSPA), massa seca da raiz (MSR) e massa seca total (MST). O ambiente AM3 apresentou melhores condições para as variáveis: PE, IVE e VME. Já o ambiente AM2 apresentou melhores condições para a variável TME com a utilização dos substratos SB2 e SB3 independente da salinidade da água de irrigação. O substrato SB3 apresentou melhores condições de crescimento para as variáveis: AP, DC, MSPA e MST. O substrato SB2 proporcionou melhores condições para a variável MSR.

show abstract

“…This material is discarded in landfills and dumping grounds, acting, similar to all organic matter, as a potential gas emitter; furthermore, such material contributes to a reduction of the useful life of these deposits, proliferation of the foci of disease-transmitting vectors, foul odors, possible contamination of soil and water bodies, and the inevitable destruction of the urban landscape. From this perspective, several works have aimed to use coconut fruit residues in agriculture as a substrate source for seedling production (Silva Junior, Sousa, Sousa, Lessa, & Silva, 2020;Putrino, Tedesco, Bodini, & Oliveira, 2020) and for the production of biochar (Liu & Balasubramanian, 2014).…”

Section: Introductionmentioning

confidence: 99%

Coconut fiber biochar alters physical and chemical properties in sandy soils

Guarnieri¹,

Nascimento

Costa

et al. 2021

Acta Sci. Agron.

View full text Add to dashboard Cite

This work aimed to characterize the biochar produced from residues of coconut fruit and to evaluate how it might beneficially alter the retention capacity of water and nutrients in soils with a sandy texture. The biochar was produced in a retort furnace and later analyzed to determine its chemical and physical characteristics. Experiments to analyze the retention potential of the biochar for water and nutrients were performed in PVC columns filled to a 400 mm depth, with the upper 300 mm receiving treatments that consisted of 0, 1, 2, 3, 4, and 5% (p p-1) biochar mixed with soil. For the nutrient retention experiment, in addition to the biochar concentrations, the treatments received the same NPK fertilization. The experiments were performed in a completely randomized design with four replications. The water retention in the upper 300 mm, as well as the pH, effective cation exchange capacity (ECEC) of the substrate, base saturation, and concentrations of P and K, increased with increasing biochar concentration. Coconut biochar demonstrated potential for increasing water retention and improving nutrient retention in sandy soils.

show abstract

Salt Stress and Ambience on the Production of Watermelon Seedlings

Cited by 11 publications

References 19 publications

Irrigation with saline water in the cultivation of mini watermelon under phosphate fertilization

Irrigation with saline water in the cultivation of mini watermelon under phosphate fertilization

Produção de mudas de abobrinha sob estresse salino em diferentes ambientes e substratos

Coconut fiber biochar alters physical and chemical properties in sandy soils

Contact Info

Product

Resources

About