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27 Sep,2025
The phenological stages of potatoes can be divided into five periods: sprouting stage, seedling stage, tuber formation stage, tuber enlargement stage, and maturity stage. These stages typically last 20–30 days for sprouting, 15–20 days for seedling growth, 25–30 days for tuber formation, 30–50 days for tuber enlargement, and 10–20 days for maturity.
26 Sep,2025
The optimal temperature during sowing is crucial for cotton germination, with higher temperatures accelerating the process. However, excessive heat hinders early seedling growth, necessitating temperature control around 14°C at a 5-centimeter soil depth. Cotton exhibits a preference for warmer conditions, with a minimum germination threshold of 10.5°C, an optimal range of 28-30°C, and a maximum germination temperature of 40-45°C. Within the optimal temperature range, both germination speed and success rate significantly improve. For instance, germination takes approximately 11 days at 12°C, 7 days at 13°C, and only 2 days at 16°C. Under high temperatures of 35°C, cotton seeds can sprout within just 8 hours.
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The need for specialized plant growth regulators