Abstract
The effect of Brassinosteroid and Super Micro Plus Nanoparticles on growth and yield components was evaluated in potatoes for the growing season 2020. In the Karbala Governorate, a Randomized Complete Block Design RCBD factorial field experiment of two factors (Brassinosteroid and super micro plus) was conducted with three replications. The Brassinosteroid was used at 0, 0.05, 0.10 and 0.15 mg.L-1 , where the super micro plus was also used with four levels of 0, 1, 3 and 5 gxL-1 . Interaction treatment of both factors at the highest concentrations (B3F3) resulted in the highest mean values of all the measured parameters including plant height (64.39cm), number of stem/plant (2.593), shoot dry weight (173.3 g.plant-1 ), leave area (51.05dc2 .plant-1 ), tuber weight (165.4g), plant yield (1948.41)g, tuber dry matter (14.88 %) and tuber content of starch (9.18%). Keywords: Brassinosteroid, super micro plus Nanoparticle, potato, Yield quality
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