Physiological indices and production of sesame under salt stress and nitrate/ammonium proportions

Dias, Adaan Sudário; Lima, Geovani Soares de; Soares, Lauriane Almeida dos Anjos; Gheyi, Hans Raj; Nobre, Reginaldo Gomes; Santos, João Batista dos; Sá, Francisco Vaniés da Silva

doi:10.14393/bj-v33n3-36528

Cited by 3 publications

(1 citation statement)

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“…The low stomatal opening of plants in saline environments is probably a strategy of plants to avoid excessive loss of water to the atmosphere by decreasing the osmotic potential, which hinders water absorption by roots (PRAZARES et al, 2015). Dias et al (2017) evaluated physiological indexes of sesame crops grown under salt stress and different nitrate and ammonium proportions and found decreases in stomatal conductance as the water salinity was increased. However, the results found in the present study for plants that received 100% bovine manure-based biofertilizer or 100% plant ash were similar to those of Sousa et al (2018), who found decreases in stomatal conductance in soybean plants as the water salinity was increased, but at a lower intensity than that found when using the organic input.…”

Section: Resultsmentioning

confidence: 99%

Physiological Responses of Peanut Crops to Irrigation With Brackish Waters and Application of Organo-Mineral Fertilizers

Sousa

Silva

et al. 2021

Rev. Caatinga

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The use of organo-mineral fertilizer is an alternative measure to mitigate salt stress in semiarid regions. Thus, the objective of this work was to evaluate the physiological indexes of peanut crops under irrigations with fresh and brackish waters and applications of organo-mineral fertilizers. The experiment was conducted from June to September, 2019, at the Universidade da Integração Internacional da Lusofonia Afro-Brasileira (UNILAB), in Redenção, state of Ceará, Brazil, using a completely randomized experimental design in a 5 × 2 factorial arrangement, with four replications. The treatments consisted of five soil fertilizers (F1= 100% NPK mineral fertilizer at the recommended rate; F2= 100% bovine manure-based biofertilizer; F3= 100% plant ash; F4= 50% mineral fertilizer and 50% bovine manure-based biofertilizer; and F5= 50% mineral fertilizer and 50% plant ash); and two salinity levels (electrical conductivities) of the irrigation water (1.0 and 5.0 dS m-1). Photosynthetic rate, transpiration, stomatal conductance, leaf temperature, internal CO2 concentration, water use efficiency, and chlorophyll index of the plants were evaluated at 40 and 54 days after sowing (DAS). Plants irrigated with fresh water presented higher stomatal conductance, photosynthetic rate, and transpiration, regardless of the fertilizer used. The use of 100% bovine manure-based biofertilizer resulted in decreases in salt stress and increases in water use efficiency at 40 DAS, and decreases in leaf temperature and increases in relative chlorophyll content at 54 DAS.

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Section: Resultsmentioning

confidence: 99%