_____________________________________________________________________________________________________ *Corresponding author: Email: keterkiprop@gmail.com; Asian Journal of Agricultural and Horticultural Research 7(4): 53-64, 2020; Article no.AJAHR.65709 ISSN: 2581-4478 Effects of Earthing up and Pruning Systems on Yield and Net Economic Benefit of Tomato (Solanum lycopersicon) I. K. Keter 1,2* , G. Oloo-Abucheli 1 and M. Muraya 1 1 Department of Plant Sciences, Chuka University, P.O.Box 109-60400, Chuka, Kenya. 2 Kenya Agricultural and Livestock Research Organization (KALRO), Coffee Research Institute, Koru Subcenter, P.O.Box 15-40104, Koru, Kenya. Authors’ contributions This work was carried out in collaboration among all authors. Author IKK designed the study, performed the statistical analysis, wrote the protocol and wrote the first draft of the manuscript. Authors GOA and MM managed the analyses of the study. Author GOA managed the literature searches. All authors read and approved the final manuscript. Article Information DOI: 10.9734/AJAHR/2020/v7i430104 Editor(s): (1) Dr. Paola A. Deligios, University of Sassari, Italy. Reviewers: (1) Adriana Carla Dias Trevisan, University Estadual of Rio Grande do Sul, Brazil. (2) Pooja S Bhat, Indian Institute of Plantation Management, India. Complete Peer review History: http://www.sdiarticle4.com/review-history/65709 Received 10 December 2020 Accepted 17 February 2021 Published 25 February 2021 ABSTRACT Tomato is a popular and extensively cultivated vegetable among the promising commodities in horticultural production in Kenya. It provides a wide variety of nutrients with many health-related benefits. Despite the importance, its yield and net economic benefits is limited by the cultural practices applied by farmers. There is limited knowledge on the effect of integrating pruning and earthing up on tomato yield and net economic benefit. This study investigated the effect of integration of pruning and earthing up on the growth and yield of tomatoes. A split-plot experimental design, arranged in a Randomized Complete Block Design, with three replications was used. The study investigated two factors i.e. pruning system in the main plot (single stem, double stem, and triple stem) and earthing up in sub-plots. (0 cm, 10 cm, 20 cm, and 30 cm). Fruit yield data was taken after each harvest. Data were analysed using SAS version 9.4 and significant means were separated using the least significant difference at α = .05. The findings of the study revealed that earthing up and pruning system had a significant (p ˂ .05) effect on tomato yield and Original Research Article