High stem number results in a smaller tuber profile and can reduce overall yield and, even more important, marketable yield (Table 1). T he potato (Solanum tuberosum) is an herbaceous annual that grows up to 100 cm (40 inches) tall. For example, the effects of planting date and storage temperature on Russet Burbank stem number are shown in Table 2. The answer to this is what you need to focus on in order to maximize profit. The opposite is also true. Potato tubers age at a greater rate when grown in stressful environments such as temperature stress, moisture stress, fertility stress, or disease pressure, when stored under fluctuating temperatures or warm temperatures, or are bruised. Think about this for a minute: What do you get paid for in your production system? The main factor affecting stem number is the physiological age of the tuber. With fewer stems there are fewer tubers, which result in a larger tuber profile. Aged tubers will have more stems, more tubers and smaller average size as a result of competition. With fewer stems there are fewer tubers, which result in a larger tuber profile. By having an accurate idea of the number of stems prior to planting you can manage the seed. Research clearly shows that as stem number increases, so does tuber number. Finding the best number of stems for the cultivar and desired outcome is essential to an economically profitable potato operation. its work through their contributions to the CGIAR Trust Fund, This publication is copyrighted by the International Potato Center (CIP). Unlike other major field crops, potatoes are reproduced vegetatively, from other potatoes. Grow outs can be done in soil or in bags, and require 3 to 4 weeks. These are connected by stem sections called stolons. The potato (Solanum tuberosum) is an herbaceous annual that grows up to 100 cm (40 inches) tall. As the potato plant grows, its compound leaves manufacture starch that is transferred to the ends of its underground stems (or stolons). ----------------------- Average stem number -----------------------. CIP Headquarters Avenida La Molina 1895, La Molina Apartado 1558, Lima 12, Peru | Tel: 511-3496017, CIP thanks all donors and organizations that globally support Aged tubers will have more stems, more tubers and smaller average size as a result of competition. This is important because knowing your stem number will likely affect your production and profitability. Think about this for a minute: What do you get paid for in your production system? Knowing your stem number will likely affect your production and profitability. Most farmers in developing countries select and store their own seed tubers. It is licensed for use under the Creative Commons Attribution 4.0 International License, CIP thanks all donors and organizations that globally support its work through their contributions to the CGIAR Trust Fund. Another example, in Table 3, shows the effect of Rejuvenate on stem number. Therefore, a part of each year’s crop – from 5 to 15 percent, depending on the quality of the harvested tubers – is set aside for re-use in the next planting season. The best way to determine stem number is to do a grow out before planting. Effect of planting date and storage temperature on Russet Burbank stem number in Washington. Actually, It is a modified stem usually called a tuber. As the potato plant grows, its compound leaves manufacture starch that is transferred to the ends of its underground stems (or stolons). As you prepare to plant your potato crop this year it would good to take some time to review the effect of stem number on potato production.

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