Abstract
An experiment "Influence of various commercial amino acids containing plant tonics on the growth, yield and quality of peach cultivars was conducted at Agricultural Research Institute Tarnab Peshawar, Pakistan during, 2017. The experiment was laid out in Randomized Complete Block Design (RCBD), with split plot arrangement, having four replications. The experiment was laid out in square system having 6 m tree to tree and row to row distance. Three different peach cultivars, i.e. Florida King, Early Grand and Tex-y4-55, were considered as main plot, while different sources of plant tonics i.e. T1 (Amino acids + micro nutrients), T2 (Amino acids + organic matter + NPK) and T3 (Amino acids), along with one T0 (Control) was allotted to the sub plot. Results showed that Early Grand cultivar attained higher higher titratable acidity (0.8%), while higher TSS (8.2 oBrix), Sugar acid ratio (13), Reducing sugar (1.8%) and Non-reducing sugar (1.9 %) was recorded in Tex-y4-55. The higher TSS (8 degrees Brix), titratable acidity (0.7 %), Reducing sugar (1.7 %), Non-reducing sugar (1.8 %), was recorded in T1. Hence it can be concluded that Peach cultivar Tex-y4-55 could be sprayed with T1 (Amino acids + micro nutrients) to get best quality under the agro climatic conditions of Peshawar.