| Abstrakt: |
Effect of potassium-silicate, calcium chloride and nano-silicate spray was investigated on yield, yield components and some physiological properties of sweet corn under irrigation regimes in a split plot experiment based on a complete block design with three replications in 2017. Experimental treatments were irrigation regimes as optimal irrigation, moderate and severe water deficit stresses, irrigation after 35%, 55% and 75% depletion of available water in the root zone as the main factor and foliar applications of 1000 and 2000 ppm potassium silicate and calcium chloride, 1000 ppm nano-silica, pure water and without foliar application as sub plots. The highest grain (6588 kg ha-1), biomass (36050 kg ha-1) and dry forage (30417 kg ha-1) yields were obtained from the main effect of foliar application of 1000 ppm potassium silicate. In water deficit conditions, application of potassium silicate significantly increased grain yield, so that potassium silicate in optimal irrigation conditions, moderate and severe irrigation increased grain yield 7, 25 and 49% compared to non-foliar application, respectively. In intensive irrigation regime the conditions, these increases were -9.29 and 9.82%, for calcium chloride and nano-silica, compared to the control (without foliar). Therefore, according to the results of this study, it can be stated that foliar application of potassium silicate was more efficient in deficit irrigation conditions in sweet corn. [ABSTRACT FROM AUTHOR] |
