Sorghum Responses to Foliar Spraying With Zinc under Water Regime Stress

Abstract

This study was conducted during the summer seasons of 2019 and 2020 at the greenhouse of National Research Centre; Giza, Egypt, to study the effect of foliar spraying with zinc in improvement negative effects of irrigation water regime in Sorghum. Three levels of water regime (1, 1.5 and 2 Liter) were used interacting with three concentrations of zinc as foliar spraying (00, 50 and 100 ppm). Generally, obtained results showed significant increment in all vegetative growth criteria, yield and chemical constituents by increasing both quantity of irrigation and zinc spraying. Moreover, using high concentrations of zinc leaded to reduce and alleviate the harmful effect of irrigation water deficiency. Inter simple sequence repeats (ISSR) molecular marker was applied using three different ISSR primers, and results recorded 61 amplified bands with different molecular weights ranged from 183 -1278 bp detected by these primers. Moreover, these amplified fragments were distributed between polymorphic bands (37 bands) with an average 12.33, unique bands (9 bands) with an average 3 and monomorphic bands (15 bands) with an average 5, so, polymorphism percentage was 60.82%.

Impacts of cobalt and zinc on improving peanuts nutrient uptake, yield and irrigation water use efficiency under different irrigation levels

“…Based on the aforementioned, it can be hypothesized that as water stress intensity increases, Zn uptake levels interact negatively with Co and other micronutrients, resulting in restricted root growth, reduced yield, and decreased Zn absorption due to high pH values 34 – 36 . Therefore, applying Zn in combination with Co under these circumstances in an appropriate method is crucial for crop yield and water use efficiency.…”

Nutrient uptake status and peanuts yield as a consequence of the cobalt and chelated zinc applications under different irrigation schemes

“…Numerous studies have demonstrated that Zn application plays a vital role in counteracting water stress impacts by enhancing seed germination, the water relations for plants, the stability of cell membrane, chlorophyll formation, osmolyte accumulation, stomatal regulation and photosynthesis, which re ecting in signi cantly better plant performance 17,18 . While as the intensity of water stress increases, uptake levels of Zn interact negatively, whereas this stress causes restriction for root growth and the absorption of Zn due the high pH values, therefore Zn utilization under these circumstances in adequate quantity and at the proper time is quite important for crop yield and quality 19,20,21 . Previous studies varied to determine the optimal method of Zn application.…”