Effects on <i>Brassica napus</i> L. Yield and Yield Components of Super Absorbent Polymer under Different Irrigation Regimes
AbstractFor evaluation of the effects of super absorbent polymer under different irrigation regimes on the yield and yield components of Brassica napus L., a factorial experiment was carried out, based on randomized complete block design with four replicas. Treatments included super absorbent polymer (0, 1, 2, 3, 4 and 5 g/kg soil) and induced drought stress (irrigation at 25, 50 and 75 mm evaporation from class A pan). The experiment was conducted in pots with 5 kg of soil. Data analysis of variance showed the significant interaction effect between polymer and irrigation on the stem length, width and weight, the number of seeds per sheath, number of seeds per plant, the number of sterile and fertile sheath per plant, fertile sheath percentage (fertile sheath/ total sheath ×100), 1000 seeds weight, seed weight per plant, sheath weight per plant and the number of total sheath. The present study revealed that indifferent from the applied amounts of the super absorbent polymer, in all cases the measured characters have been more affected by induced drought stress.
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