The Importance of Nutrient Management for Potato Production Part II: Plant Nutrition and Tuber Quality

Abstract

The term 'quality' is a complex parameter in the field of potato production, and the desired quality traits depend on the intended use. Important internal quality traits for potatoes are tuber flesh discolouration, dry matter, and starch content. External quality traits include tuber size and shape as well as resistance against mechanical stress during and after harvest. These quality traits are closely interrelated and genetically controlled. It has been demonstrated that all these parameters are also linked to the nutrient status of the plant and/or the tubers. For instance, the susceptibility of tubers for discolouration of both fresh market and processed cultivars is closely related not only to the nutrient supply but also to post-harvest treatment. Besides, the potential to form carcinogenic compounds like acrylamide from precursors during the deep-frying of potato products and the accumulation of toxic substances like glycoalkaloids are important quality criteria in terms of food safety. The influence of the supply of nutrients on potato tuber quality depends initially on their physiological functions, but the ratio to other nutrient needs should also be taken into account.

The Correlation between Soil Nutrient and Potato Quality in Loess Plateau of China Based on PLSR

“…Soil nitrate nitrogen had the greatest effect on browning intensity, while soil available phosphorus had the least effect. Some researchers have proved that the relationship between nutrient supply and physiological processes, soil nutrient factors have important influence on potato tuber quality, such as potassium has the greatest influence on potato growth and photosynthesis [50,51]. This is consistent with our findings that the maximum determination coefficient of potato yield and soil available potassium content was 0.169 (p = 0.024).…”

Evaluation of Tuber Yield and Marketable Quality of Newly Developed Thirty-Two Potato Varieties Grown in Three Different Ecological Zones in South Korea

“…Comparatively, a higher number of cultivars (15) with high cracking rate (≥50%) was observed in the alpine area, followed by middle altitude (7) and low altitude (6); however, its severity can still be considered low. Generally, growth cracks develop in the tuber enlargement stage as a consequence of irregular irrigation, overdose of nitrogen, and nutrient imbalance (like boron deficiency) [28,29]. Although the present research did not clearly identify the reason for high cracking rate in the Pyeong-chang area, uneven moisture and temperature distribution in the alpine region [30] might play an important part.…”

The Effect of Endophytic Bacteria Bacillus subtilis and Salicylic Acid on Some Resistance and Quality Traits of Stored Solanum tuberosum L. Tubers Infected with Fusarium Dry Rot

“…However, GA formation can also occur in the non-green parts of tubers. Therefore, GA formation and the greening of potatoes are physiologically unrelated processes [51]. The formation of GA can be influenced by many factors, including genotype, growing conditions, transportation, storage, temperature, germination, exposure to light, phytopathogens, herbicides, biostimulants, etc.…”

“…The formation of GA can be influenced by many factors, including genotype, growing conditions, transportation, storage, temperature, germination, exposure to light, phytopathogens, herbicides, biostimulants, etc. [38,51]. However, the highest accumulation of toxic levels of GA in potatoes typically occurs in the postharvest storage period.…”