Best potato growing condition available in Ethiopia compared to African countries. Poor resource and crop management was found one of the major production and productivity limiting factors. This review was conducted to show the gap available in optimum nitrogen rate utilization, limitation of irrigation water utilization, nitrogen and water use efficiency consideration in agronomic work of the country. In Ethiopia the production of potato was showing increasing due to land used for production increased but the productivity showed slight increase. Optimizing resource use efficiency by better management of water and nutrients through temporal and spatial irrigation and fertilization strategies in crop production is now getting concern in the world to enhance the profit of farm and minimize the cost of production. It is useful to consider some efficiency indices, in order to optimize the scheduling of water and nitrogen application. Determining nitrogen rates and irrigation water amount that improve the use of both water and nitrogen, and increasing knowledge of efficient use of resource could minimize the possible N losses thereby minimizing cost and increasing production profit. In the process of optimization, crop type to be grown and variety have also a remarkable contribution. On the last the nitrogen rate, irrigation regime and use efficiency of nitrogen and water were interrelated to each other and should be considered to gather with the yield and yield component of the potato for sustainable production with sufficient benefit.
Scarcities of healthy and quality potato tuber seeds are the problem of the production of potatoes in the world. Especially, in developing countries it is a serious problem that cause decline in the production and productivity of the potatoes and hampers the profits of producers. To alleviate this problem, many countries produce the mini tubers in screen house from diseases-free planting materials in pots or seed bade made of pathogen-free media. Most reviewed papers indicated that a media used to grow potato in screen houses are made of a combination of different substrates for the suitability of the crop gown on it as it provides sufficient nutrients, aeration, support, and water. Developed countries use rock wool, vermiculite, peat, and other expensive media made by factories while the underdeveloped use cheap materials that are easily available in their surroundings like forest soil, sand, compost, and FYM (farm yard manure). There is also limited research concerning these materials in developing countries, especially, about the ratio of mixing and types to be mixed. The expensive materials used for pot media making are not found in Ethiopia though there are surplus raw materials. Therefore, this review was conducted to assess the information available about the different screen house growing media used worldwide and conceptualize for future utilization. It is concluded that researchers should work on the availability of healthy and quality tuber seed by increasing the numbers produced in screen house through agronomic and other techniques of production solving problems related to potting media.
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