Effect of salicylic acid in two stages of application on wheat crop

Abstract

Salicylic acid (SA) is a plant growth regulator and participates in several physiological and biochemical processes. Its use can assist in the growth, development, productivity and quality of several crops. Thus, the objective of this work was to evaluate the effect of salicylic acid in two application stages on wheat crop. The experiment was conducted under field conditions and designed as randomized blocks, with four replications. Treatments 0.5 and 1.0 mM of SA were applied in stages 1 and 10, beginning and end of vegetative growth of wheat plants, besides a control treatment (without SA). Phytointoxication and SPAD index evaluations were performed at 14, 21, 28, and 35 days after application (DAA) of SA and the end of the experiment, 109 DAA the plants were tracked to quantify the mass of a thousand grains, hectoliter weight and grain yield. The application of SA did not cause symptoms of phytointoxication and increased the values of the SPAD index and all components of grain yield compared to the control treatment (without SA). The application of SA promoted a greater increase in the variables analyzed when applied in stage 10 of wheat plants.

Application of potassium nitrate and salicylic acid improves grain yield and related traits by delaying leaf senescence in Gpc-B1 carrying advanced wheat genotypes

“…In wheat, the NAC-S gene has been reported to confer positive interaction with GPC and delayed senescence with no yield penalty ( Sultana et al., 2021 ). Furthermore, SA spray on wheat leaves also significantly improved the yield components, including GPS and TGW, in all the twelve genotypes tested in the present study, which is in agreement to the previous studies conducted in wheat ( Karim and Khursheed, 2011 ; Dias et al., 2021 ). The enhancement in yield components with SA application on leaves could be attributed to changes in wheat physiological mechanisms such as influencing the antioxidant defense system ( Hasanuzzaman et al., 2019 ), ion transportation ( Simaei et al., 2012 ), flowering time ( Wada and Takeno, 2010 ), and photosynthesis efficiency ( Fariduddin et al., 2003 ).…”

“…Application of SA on leaves significantly affects the wheat physiology, including seed germination, normal growth, yield production, nutrient uptake and remobilization, photosynthesis efficiency, stomatal density and transpiration rate, root development, and biomass enhancement ( Azmat et al., 2020 ; Dias et al., 2021 ; Wang et al., 2021 );. Under stress conditions, SA regulates crucial plant physiological processes, including photosynthesis, proline metabolism, nitrogen metabolism, glycine-betaine production, antioxidant defence system (generation of reactive oxygen species), and plant-water relations, and thus protects plants from abiotic stresses (reviewed in Khan et al., 2015 ).…”

Growth and agronomic performance of soybean applied with pre-emergence herbicides

“…ha -1 ) + glyphosate. Similar to that observed by Dias et al (2019) for the post-emergence application of chlorimuron in soybean. Osipe et al (2014) reported a reduction in soybean plant height for the application of chlorimuron (20 g a.i.…”

Impact of salicylic acid and sodium hydrosulfide applied singly or in combination on drought tolerance and grain yield in wheat plants

“…The hectoliter weight and 1000‐grain weight are closely related to grain attributes, encompassing factors such as shape, tegument texture, size, and weight (Dias et al., 2021). The 1000‐grain weight is a crucial metric in agronomy, particularly in wheat cultivation, as it helps determine the effects of drought stress on crop yield and growth (Shah et al., 2019), providing insights into plant responses to these conditions, thus enhancing the understanding of wheat cultivation.…”