A Review of Growth and Yield Performance of Yam (Dioscorea Alata L.) as Influenced By Fertilization Rates and Planting Materials

Abstract

Yam (Dioscorea alata L.) is a significant root and tuber crop in tropical and subtropical regions, providing food security and income generation. The growth and yield performance of yam can be influenced by factors such as fertilization rates and planting materials. This review aims to summarize the existing literature on the growth and yield performance of yam, focusing on the impact of fertilization rates and planting materials. Proper nutrient management through fertilization is crucial for optimal growth and maximum yield potential in yam cultivation. Various fertilization rates, including nitrogen, phosphorus, and potassium levels, have been investigated to determine the most effective combination for promoting yam growth and tuber formation. Additionally, the authors reviewed several previously published articles over the years from agricultural science-related journals such as Scopus Index, Web of Science, JSTOR, Elsevier, ProQuest, and Google Scholar. It took four months between March and June 2023. This paper delves into the botany of yam, its origin and geographical distribution, its uses, its planting materials, the advantages of propagating yam, and its watering intervals. The choice of planting materials, including true yam seedlings, tuber pieces, and vine cuttings, can significantly affect yam growth and yield. Understanding the effects of different planting materials is essential for selecting appropriate planting methods and ensuring successful yam production. This review synthesizes the available information, providing insights into best practices for yam cultivation and contributing to sustainable production systems