What conditions are needed for growing okra?
1. Temperature Okra likes warmth and fears severe cold, and has strong heat tolerance. When the air temperature is 13°C and the soil temperature is around 15°C, the seeds can germinate. However, the optimum temperature for both seed germination and the growth period is 25-30°C. When the monthly average temperature is below 17°C, flowering and fruiting are affected; when the night temperature is below 14°C, growth is slow, the plants are short, the leaves are narrow, there are few flowers, and many flowers drop. At the optimum temperature of 26-28°C, there are many flowers, the fruit-setting rate is high, the fruits develop quickly, the yield is high, and the quality is good.
2. Moisture Okra is drought-tolerant and moisture-tolerant, but not waterlogging-tolerant. If the soil moisture is too high during the germination period, it easily induces seedling damping-off. If there is drought during the fruiting period, the plants grow poorly and the quality is inferior, so the soil should always be kept moist.
3. Light Okra is especially sensitive to light conditions and requires a long photoperiod and sufficient light. A sunny plot should be chosen, ventilation and air movement should be enhanced, and reasonable close planting should be used to avoid shading one another and affecting ventilation and light penetration.
4. Soil and nutrition Okra has a relatively wide adaptability to soil and is not particular about soil fertility, but loam or sandy loam with deep soil, loose and fertile texture, and good drainage is more suitable. In the early growth stage, fertilizer should be mainly nitrogen, while in the middle and late stages, more phosphorus and potassium fertilizer is needed. However, too much nitrogen fertilizer makes the plants prone to excessive vegetative growth, delays flowering and fruiting, and raises the node position of fruit setting; insufficient nitrogen fertilizer causes poor plant growth and affects flowering and fruit setting.