The Role of Calcium and Boron Fertilization in Improving Photosynthetic Efficiency, Yield, and Fruit Quality
The Importance of Calcium and Boron for Crops
Calcium and boron are essential nutrients that play vital roles in plant growth, including cell wall structure, membrane stability, pollen tube elongation, and cell division. Calcium (Ca) and Boron (B) play crucial roles in several developmental processes directly related to yield and fruit quality.
Foliar fertilization with calcium and boron during flowering can enhance flower survival and pod set, increasing the number of pods per plant, and consequently, the crop yield. Studies on soybean have shown that foliar fertilization with calcium and boron effectively improves carbon metabolism, leading to increased water use efficiency and carboxylation efficiency, which increases the concentration of sugars and proteins in the leaves. This improved metabolic activity contributed to an increase in the number of pods and grains per plant.
Challenges Associated with Calcium Availability and Nutrient Deficiency
The ease with which plant roots can extract minerals from the soil varies. While nitrogen is easily extracted, calcium is much more difficult, rating very low on the bioavailability scale (around 5 out of 100) compared to nitrogen.
As nitrogen inputs increase and growth accelerates, the availability of other minerals becomes imbalanced[cite: 1]. A deficiency of calcium and boron can negatively impact fruit quality, and can lead to flower bud necrosis or abscission, failure of flowers to open, poor fruit set, and fruit quality issues such as softening (reduced firmness), shorter shelf life, and decreased concentration of phenolic compounds. This deficiency is commonly observed in heavily cropping bushes or under dry weather conditions.
Practical Solutions: Specialized Foliar Fertilizers
To overcome absorption challenges and nutrient deficiencies, foliar applications of calcium and boron, either alone or in combination, are used to improve fruit quality or increase the concentration of these elements. Studies confirm that foliar fertilization with calcium and boron at the onset of flowering is an effective practice to increase carbon metabolism and ensure pod formation and carbon fixation.
In this context, integrated solutions like CALIO-BOR 21 are highly important. This product provides an optimal formulation of calcium and boron to meet plant needs during critical stages such as flowering and fruit setting, ensuring the plant efficiently receives these hard-to-absorb elements through foliar spraying, avoiding quality issues and yield reductions.
Frequently Asked Questions (FAQ)
1. Why is it important to spray calcium and boron together during flowering?
Because foliar fertilization with calcium and boron during flowering enhances flower survival and pod set, and supports pollen tube elongation and cell division, which directly translates to increased fruit set and improved yield.
2. What are the symptoms of calcium and boron deficiency in fruits and flowers?
Deficiency leads to flower bud necrosis or abscission, poor fruit set, and fruit quality problems such as reduced firmness (softening) and shorter shelf life.
3. Is soil application of calcium insufficient?
It is often insufficient during rapid growth periods because the bioavailability of calcium in the soil is very low. Therefore, using specialized fertilizers like CALIO-BOR 21 as a foliar spray is preferred to ensure the elements quickly reach the flowers and fruits.
