Crescimento E Desenvolvimento De Variedades De Girassol Irrigado Com Água Salina

Travassos, Kaline Dantas; Gheyi, Hans Raj; Soares, Frederico Antônio Loureiro; Barros, Helder Morais Mendes; Dias, Nildo da Silva; Uyeda, Cláudio Augusto; Silva, Francisco Valfisio da

doi:10.15809/irriga.2012v1n01p324

Cited by 17 publications

(19 citation statements)

References 18 publications

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“…Based on the regression equation ( Figure 5B), the increment in irrigation water salinity caused decreasing linear effect on RGR-SD in the period of 15-90 DAT, in which plants irrigated using water with EC of 3.5 dS m -1 showed reduction of 0.007 mm mm -1 day -1 (17.53%) in the RGR-SD, in comparison to those under 0.3 dS m -1 . Reduction in relative growth may result from the increasing accumulation of salts in the soil due to irrigation along the experimental period, which negatively contributed to the water absorption by plants due to the osmotic effect and/or toxic effect of the salts on plants, leading to reduction of growth (TRAVASSOS et al, 2012), because the plant stand was not uniform, leaves were burned on the edges and their color were not characteristic of the crop. According to the regression equation shown in Figure 6A.…”

Section: Resultsmentioning

confidence: 99%

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: 99%

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 accumulation of salts in the soil by irrigation with high EC negatively contributes to the water absorption by plants, which can be a factor in the reduction of the photosynthetic and metabolic processes of crops, leading to reduced NL (Travassos et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

Vegetative development and content of calcium, potassium, and sodium in watermelon under salinity stress on organic substrates

Júnior

Silva

Lima

et al. 2017

Pesq. agropec. bras.

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-The objective of this work was to evaluate the vegetative development and determine the concentration of sodium, potassium, and calcium in watermelon (Citrullus lanatus) grown on two organic substrates and under increasing saline concentrations. The substrates were soil + earthworm humus (S 1 ) and soil + bovine manure (S 2 ), and the saline treatments consisted of irrigation water with different electrical conductivities: 1.36 (control), 3.56, 5.76, and 7.96 dS m -1 . The experimental design used was a randomized complete block in a 2×4 (substrate × conductivity) factorial arrangement with five replicates. Main branch length, root length, stem diameter, leaf number, leaf area, and fresh matter mass of shoots and roots, as well as the sodium, potassium, and calcium contents in the plants, were determined. All phenological parameters interacted with the substrates, and S 1 improved plant performance. Substrates interacted significantly with: leaf area; leaf number; stem diameter; main branch length; root length; fresh matter mass of shoots and roots; and the contents of sodium, potassium, and calcium, in both shoots and roots of watermelon irrigated with saline water for up to 27 days after emergence. There are also interactions between substrates and salinity for stem diameter, main branch length, fresh matter mass of roots, and calcium contents in both shoots and roots, and potassium and sodium contents in the roots.Index terms: Citrullus lanatus, bovine manure, humus of earthworm, salt stress.Desenvolvimento vegetativo e conteúdo de cálcio, potássio e sódio em melancieira sob estresse salino, em substratos orgânicos . Utilizou-se o delineamento experimental de blocos ao acaso, em arranjo fatorial 2×4 (substratos × condutividade), com cinco repetições. Foram determinados comprimento do ramo principal e da raiz, diâmetro do caule, número de folhas, área foliar e massa fresca da parte aérea e da raiz, bem como o conteúdo de sódio, potássio e cálcio nas plantas. Todos os parâmetros fenológicos apresentaram interação com os substratos, e S 1 promoveu melhor desempenho das plantas. Os substratos interagiram significativamente com: área foliar; número de folhas; diâmetro do caule; comprimento do ramo principal; comprimento de raiz; massa de matéria fresca da parte aérea e da raiz; e teores de sódio, potássio e cálcio na parte aérea e nas raízes de melancieiras irrigadas com água salina, até 27 dias após a emergência. Os substratos também interagiram com a salinidade para diâmetro do caule, comprimento do ramo principal, massa de matéria fresca de raiz, e teores de cálcio na parte aérea e raiz, e de potássio e sódio na raiz.Termos para indexação: Citrullus lanatus, esterco bovino, húmus de minhoca, salinidade.

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“…Nevertheless, these authors had used a distinct melon cultivar from the current study, justifying that salt effect on plants might vary among species and cultivars from same species (TRAVASSOS et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

Management strategies of saline water on morphometric characteristics of melon cultivars

Medeiros

Neto²,

Gheyi

et al. 2014

Eng. Agríc.

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It was to aimed it to investigate effects of various saline water use strategies on melon production and quality of two cultivars (Cucumis melo L., Sancho -C 1 and Medellín -C 2 . The plants were irrigated with water of low (S 1 = 0.61 dS m -1 ) and high (S 2 = 4.78 dS m -1 ) salinity levels, during each crop stage: S 1 S 1 S 2 S 2 -T 1 ; S 2 S 1 S 2 S 2 -T 2 ; S 2 S 2 S 1 S 2 -T 3 . The 1 st , 2 nd , 3 rd and 4 th terms of these sequences correspond to initial growth, flowering, fruit ripening and harvest phenological stages, respectively. Additionally, there was irrigation rotation during all cycle, with water S 1 during two days followed by S 2 for one day (S 1 2 dias + S 2 1 dia -T 4 ) and irrigation with non-salt water S 2 during all cycle -T 5 . Moreover, we used as control, the irrigation water at 3.2 dS m -1 resulting from water mixture of S 1 and S 2 -T 6 (farm used irrigation management). The experiment was carried out in Pedra Preta Farm, in Mossoró, RN, using an entire randomized block statistical design in a 6x2 subdivided plot scheme with four replications. Saline water irrigation at initial growth stage reduces leaf area and shoot dry phytomass of Sancho and Medellín melon cultivars. The irrigation by T 4 provided the highest phytomass production of fruits at 48 DAS, reducing in 33% of good quality water in irrigation. KEYWORDS:Cucumis melo L., irrigation water quality, growth analysis ESTRATÉGIAS DE MANEJO DE ÁGUA SALINA SOBRE AS CARACTERÍSTICAS MORFOMÉTRICAS DE CULTIVARES DE MELÃORESUMO: Objetivou-se investigar os efeitos de diferentes estratégias de uso de água salina na produção e na qualidade de frutos de duas cultivares de melão (Cucumis melo L., Sancho -C 1 e Medellín -C 2 ), irrigadas com água de baixa (S 1 = 0,61 dS m -1 ) e de alta (S 2 = 4,78 dS m -1 ) salinidades, por fase da cultura: S 1 S 1 S 2 S 2 -T 1 , S 2 S 1 S 2 S 2 -T 2 , S 2 S 2 S 1 S 2 -T 3 (o 1º, 2º, 3º e 4º termos dessas sequências correspondem, respectivamente, às fases fenológicas crescimento inicial, floração, maturação dos frutos e colheita) e a irrigação alternada, em todo o ciclo, com água S 1 por 2 dias, seguido por água S 2 por um dia (S 1 2dias + S 2 1dia -T 4 ) e irrigação com água S 2 em todo o ciclo -T 5 ; além disso, uma testemunha, a irrigação com água de 3,2 dS m -1 resultante da mistura das águas S 1 e S 2 -T 6 (manejo adotado pela fazenda ). O experimento foi conduzido na Fazenda Pedra Preta, no município de Mossoró -RN, utilizando o delineamento em blocos inteiramente casualizados, em um esquema de parcelas subdivididas 6 x 2, com quatro repetições. A irrigação com água salobra, logo na fase inicial de crescimento, reduz a área foliar e a fitomassa seca da parte aérea das cultivares de melão Sancho e Medellín. A irrigação do T 4 proporcionou a maior produção de fitomassa de frutos de melão aos 48 DAS, reduzindo 33% de água de boa qualidade na irrigação.

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Crescimento E Desenvolvimento De Variedades De Girassol Irrigado Com Água Salina

Cited by 17 publications

References 18 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

Vegetative development and content of calcium, potassium, and sodium in watermelon under salinity stress on organic substrates

Management strategies of saline water on morphometric characteristics of melon cultivars

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