Abstract

In order to evaluate the use of potash fertilizer and amino acids on the yield and yield components of maize, a factorial experiment based on complete block design with three replications in 2013 in Research Farm of College of Agriculture, Islamic Azad University, Roudehen Branch in Damavand was conducted. The first factor, potassium fertilizer was investigated in four levels of non-application (control), application of potassium sulphate, application of nano potassium fertilizer and combined application of potassium sulphate and nano potassium fertilizer; the second factor, amino acid was investigated in three levels of non-application of amino acid (control), foliar application of amino acid and amino acid water-soluble application. The investigated traits were number of ears per plant, number of grains per row, number of grains per ear, number of rows per ear, biological yield and grain yield, respectively. Results showed that the effect of potash fertilizer and amino acid had significant effects on the investigated attributes. Mean comparison showed that the solution of the amino acid with the combined application of potassium sulfate and potassium nano fertilizer had greatest impact on the grain yield.