Materials Effect of Drought Stress, Nano-Superabsorbent and Biofertilizers on Morphophysiological Characteristics and Performance of Spring Canola (Brassica napus L.)

Background & ObjectiveThe aim of this research was to evaluate the effect of nanosuperabsorbent treatments and biofertilizers on some morphophysiological characteristics, yield and yield components of Spring Canola seed under different levels of irrigation.Methods & MaterialsThe field experiment was conducted in 2017 and 2018 as a factorial split plot based on a randomized complete block design in 3 replications. The treatments include irrigation at three levels (irrigation after evaporation of 70, 120 and 170 mm of evaporation from the Class A pan in the main plots) and nanosuperabsorbent treatments at two levels (0 and 45 kg/ha) and fertilizer treatments at four levels: control, Chitosan, growth-stimulating bacteria and chitosan + growth-stimulating bacteria were factorially placed in sub-plots.ResultsNitrogen and phosphorus content, leaf water percentage, green cover percentage, chlorophyll content, plant height, number of branches and leaves per plant, number of seeds per plant, number of seeds per plant, biological yield and consequently grain yield decreased, but the temperature Canola leaves increased. The application of fertilizer treatments, especially the combined treatment of biofertilizers + nano-superabsorbent under all irrigation levels, led to the improvement of these traits and rape seed yield, especially under severe stress. ConclusionImprovement of morphophysiological traits and product components ultimately increased seed yield. Therefore, it can be concluded that the combined application of nanosuperabsorbent with biofertilizers can be an effective method to improve grain yield under drought stress conditions.