The Fertilization and Water Management Method for Bulb Begonias
This article provides a brief introduction to the experiences of managing bulb begonias, focusing on their fertilization and water management techniques. Keep reading for more details!
>Balanced Fertilizer Application
The suitable foliar fertilizer formula for bulb begonias consists of 0.2 kilograms of urea and 0.2 kilograms of potassium nitrate, or 0.2 kilograms of ammonium nitrate and 0.2 kilograms of potassium nitrate, dissolved in 9 liters of water. After dissolution, take 30 milliliters of the concentrate and dilute it in 90 liters of water to create a foliar fertilizer.
In the first few weeks after potting, the ratio of nitrogen, phosphorus, and potassium in the soilless medium should be maintained at 15:8:10. After 4 weeks, the ratio is adjusted to 15:15:15. In the last 6 weeks before flowering, the ratio can be adjusted to 15:15:20. Maintaining high potassium content can promote an increase in stem hardness. This change is not sudden but a gradual increase in potassium. A sudden increase in potassium content will lead to lignification of the plant rather than succulification. Potassium is important for the normal development of the roots. However, its utilization is closely related to the level of magnesium in the medium. The presence of phosphorus is closely related to flower formation. But if excessive, it can cause a magnesium deficiency and reduce potassium absorption.
Therefore, it is recommended to use sulfate magnesium every 2 weeks (after the ratio is adjusted to 15:15:20). Add 50 grams of magnesium to every 45 liters of water. Fertilizer use is necessary before flowering. Throughout the growing season, it is essential to ensure an adequate supply of nitrogen (G-Y). If excessive, it will lead to soft cell tissue, making the plant susceptible to disease. During plant growth, calcium plays a significant role in the formation and development of the plant's shoot tips and also aids in the absorption of nitrogen. When the plant is flowering, the phosphorus content should be increased appropriately. However, nitrogen and potassium elements should be maintained. Two weeks before sale, use ammonium phosphate, adding 1/4 teaspoon to every 4.5 liters.
Similarly to the effects of a significant deficiency of macronutrients, a minor deficiency of micronutrients can cause severe consequences. Plants require micronutrients in parts per million, and adding 14 grams of micronutrients to 35 liters of the medium can ensure an adequate supply (G-Y). Additionally, during periods of low evaporation and transpiration rates each year, when the watering frequency is reduced, additional foliar top dressing is required.
In the fertilization and water management of bulb begonias, watering is a crucial step. More often than not, poor plant growth is due to insufficient water or excessive watering. Determining when to water can be challenging. There are two methods to decide if a plant needs watering. First, check the weight of the pot; with experience, you can determine if the plant needs watering from this. Second, dig 2.5 cm into the medium to observe its moisture level.
The information shared above on the fertilization and water management of bulb begonias is hoped to be helpful to you!