Field Crop 2025, Vol.8, No.1, 11-19 http://cropscipublisher.com/index.php/fc 14 (Sapakhova et al., 2023). But this is not enough. Old methods such as crop rotation and the use of organic fertilizers are actually quite effective, which can both nourish the land and save water (Brouwer et al., 2023). In the final analysis, farming still requires a balance, and the best effect is achieved by combining new and old methods. Figure 1 Tolerance mechanism of sweet potato to drought stress (Adopted from Sapakhova et al., 2023) Organic farmers now know that the best way is to use less fossil fuels, so that the carbon footprint of the crops grown can be much lower (Rempelos et al., 2023). For example, it is very cost-effective to choose biofortified varieties with strong resistance, which use less fertilizers and pesticides and put less pressure on the environment (Garg et al., 2018). But the most amazing thing is that the new technology now combines genomics and breeding, which can make sweet potatoes use nitrogen fertilizer more efficiently (Tiwari et al., 2018). In this way, not only can the fertilizer money be saved, but carbon emissions can also be reduced. 6 Market Performance and Economic Evaluation 6.1 Market acceptance of nutrient-enriched sweet potatoes The fortified sweet potatoes on the market now, especially the orange-fleshed variety (OFSP), are indeed more popular than ordinary varieties. This is mainly due to their rich beta-carotene content, which is an important source of vitamin A (Alam, 2021; Laurie et al., 2022). Interestingly, varieties such as Bophelo and NASPOT-12 are particularly popular among small vendors, and ordinary people recognize their nutritional value (Lemma et al., 2023). However, breeding is not a casual thing. Current research is becoming more and more targeted, specifically developing new varieties for specific needs such as poor areas and people with nutritional deficiencies (Leite et al., 2022). In this way, practical problems can be solved and ordinary people are more willing to accept them. In the final analysis, it is this precise breeding method that makes nutritious sweet potatoes more and more popular.
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