Sweet potatoes is both a staple and vegetable crop, containing a significant amount of protein,provitamin A,Band C and mineral such as Ca. Plant breeding (potatoes) is a continuous endeavor to develop Superior plant(potatoes) phenotype that are better adapted to human need by utilizing the available genetic variation. In this journal we seek to research on design of experiment, experimental analysis, methods and approach of plant breeding of sweet potatoes by the use of R-program package associated with agricultural. The research was carried out in Mathematic department (Nairobi University) by a group of 3 boys. 1. Ochieng O.Rhoderic:107/1287/2015 2. Bosire Brayan M.:107/31798/2015 3. Kevin Kimanzi K:163/82102/2017 A sample of twelve (12)data on sweet potatoes was tested,analysed and conclusion achieved... A form of multivariate analysis or the analysis of variance is used to estimate the components of variances. Therefore, this review is aimed at highlighting the most used mating design in sweet potato breeding and genetics studies. It provides easy and quick insight of the different form of mating designs and some statistical components for successful plant breeding. Package Agricolae is by far the most used package in this task Preprint submitted to EXPERIMENTAL DESIGN AND ANALYSIS IN PLANT BREEDING OF SWEET POTATOESMarch 5, 2020 of plant breeding. It supports planning of lattice designs,factorial designs and randomized complete block design. Analysis includes both conventional quantitative genetics as well as molecular breeding tools. The functionalities include analysis of designs specific to plant breeding needs such as Augmented block designs, Genotype x Environment and stability and variance component