International Journal of Horticulture, 2025, Vol.15, No.3, 113-122 http://hortherbpublisher.com/index.php/ijh 117 5.2.2 Relationship between water supply and irrigation management Water supply and irrigation management are essential for maintaining high potato yields. Different irrigation levels can impact total biomass and tuber weight. For example, drip irrigation with varying water regimes (pF 2.7, pF 2.5, and pF 2.2) showed that the highest water consumption and biomass production occurred at the highest irrigation level (Figure 2) (Jama-Rodzeńska et al., 2021). The use of sprinkler and drip irrigation methods can influence tuber flesh temperature and defect rates, with drip irrigation raising tuber flesh temperature compared to sprinkler irrigation. Figure 2 Tuber yield and water efficiency of potato varieties planted under different irrigation levels (Adopted from Jama Rodzeńska et al., 2021) 5.2.3 Effects of monocropping and crop rotation patterns on yield Monocropping and crop rotation patterns also affect potato yields. Crop rotation can help mitigate the negative effects of soil nutrient depletion and pest accumulation associated with monocropping. The implementation of crop rotation and the use of half-rotted manure as a predecessor can significantly enhance yield levels (Myronova, 2023). The stability of tuber yield can be influenced by the choice of cultivar and the environmental conditions, with some cultivars showing more resilience to monocropping and others benefiting more from crop rotation (Lenartowicz et al., 2019). 5.3 Application of agricultural mechanization and precision agriculture The application of agricultural mechanization and precision agriculture techniques can greatly enhance potato yields. Precision agriculture involves the use of advanced technologies to optimize field-level management regarding crop farming. The use of crop growth models like the SUBSTOR potato model can help identify and assess strategies for yield improvement and environmental adaptation. Mechanization, including the use of efficient irrigation systems and precise fertilizer application, can also contribute to higher yields by ensuring optimal growing conditions and reducing labor costs (Ojeda et al., 2021). 6 Case Studies on High-Yield Potato Cultivation 6.1 Cultivation practices of high-yielding potato cultivars in northern China In Northern China, innovative cultivation practices have been developed to enhance potato yields. One notable technique is the use of sprout planting technology, which involves planting disease-free potato varieties using different parts of the sprout (top bud, middle bud, and tail bud) and varying bud lengths (10 cm, 15 cm, and 20 cm). Research has shown that top bud direct seeding is significantly superior, particularly for the 'Zhongshu 4' variety, which matures 14 days earlier and yields 38.05% more than traditional methods. The 15 cm and 20 cm bud length treatments further increased yields by 41.78% and 38.05%, respectively, demonstrating the high potential of this technique for improving potato yield and quality in greenhouse conditions (Wang et al., 2023).
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