1、Foliar calcium fertilization reduces fruit cracking in pomegranate (Punica granatum cv. Ardestani)
Calcium foliar treatment with the nano-Ca fertilizer at 0.50 g Ca L −1 and 1% CaCl 2 (in the both seasons) and also 2% CaCl 2 (only in the second season) decreased significantly fruit cracking when compared with the control treatment, resulting in increases in marketable fruit yield.
2、The Effect of Calcium
The effect of a foliar fertilizer containing calcium, Wuxal Suspension Type 2, on the yield, fruit quality characteristics and macro- and microelement contents of the leaves of tomatoes was investigated in a greenhouse trial at the fruit-growing trials site in Adana.
3、PRE
Soil treatments with calcium to increase fruit calcium concentration have often met with very little success. The direct application of calcium to the fruit is the most effective method for increasing fruit calcium content. This can be accomplished by preharvest sprays or postharvest dips or vacuum or pressure infiltration.
4、Functional analysis of tomato calmodulin gene family during fruit development and ripening
Among six calmodulins, SlCaM1 had the highest expression during fruit enlargement, whereas SlCaM2 was the major calmodulin during fruit ripening.
5、Influence of calcium and magnesium based fertilizers on fungal diseases, plant growth parameters and fruit quality of three varieties of tomato
On the whole, Rio Grande and Rio de Grenier plant were the tomato varieties whose health, growth, development, yield and fruit quality parameters were the most positively affected by treatments with fertilizers containing calcium oder magnesium.
Foliar calcium fertilization reduces fruit cracking in pomegranate (Punica granatum cv. Ardestani)
Calcium foliar treatment with the nano-Ca fertilizer at 0.50 g Ca L−1 and 1% CaCl2 (in the both seasons) and also 2% CaCl2 (only in the second season) decreased significantly fruit cracking when compared with the control treatment, resulting in increases in marketable fruit yield.
Evaluation of pre
Common compounds which are used for calcium spraying are calcium chloride and calcium nitrate. Impurities in the calcium chloride can burn leaves and damage fruits and foliar calcium nitrate can cause non-bright color in red cultivars (Wooldridge and Joubert, 1997; Lanauskas and Kvikliene, 2006).
What could promote farmers to replace chemical fertilizers with organic fertilizers?
To lessen the negative environmental impact of chemical fertilizers, replacing chemical fertilizers with more organic fertilizers for famers is a good choice.
Impact of organic and inorganic fertilizers on tomato vigor, yield and fruit composition under tropical andosol soil conditions
All cation-balanced treatments (organic, mineral or a combination of both) significantly improved plant growth, the number of trusses and fruits per plant, the marketable fruit yield and fruit P, K, Ca and Na contents of both tomato varieties considered.
Effect of organic and inorganic sources of fertilizer on growth, yield and fruit quality of eggplant (Solanum Melongena L).
The experiment aimed at evaluating the effect of combination between two levels of the recommended mineral fertilizers (50% and 100% of research recommended rates) with three types of organic manures on growth, fruit yield and quality of egg plant (Solanum melongena L) var. black beauty.
Calcium fertilizers play a crucial role in fruit tree cultivation. They not only promote fruit enlargement but also enhance the toughness of the fruit peel and disease resistance. There are various types of calcium fertilizers, among which calcium magnesium phosphate fertilizer and calcium-iron-zinc-boron compound fertilizer are most commonly used in fruit tree cultivation. Each has distinct characteristics and can be selected based on specific needs.
I. Calcium Magnesium Phosphate Fertilizer
Calcium magnesium phosphate fertilizer is a specialized fertilizer for fruit trees, containing calcium and magnesium, both essential for tree growth and fruit quality. Calcium increases soil pH, benefiting root development, while magnesium boosts photosynthesis and improves fruit quality. This makes it a popular choice during the fruit enlargement period.
Key Considerations:
- Timing of Application: Apply during or around the fruit enlargement phase when calcium and magnesium demands are high.
- Application Rate: Determine dosage based on tree age, vigor, and soil conditions. A typical rate is 50–100 kg per mu (approx. 0.067 hectares).
- Application Method: Mix with organic fertilizer or spread directly under the tree canopy.
- Precautions: Avoid overapplication to prevent soil salinzation. Coordinate with other fertilizers to ensure balanced nutrition.
II. Calcium-Iron-Zinc-Boron Compound Fertilizer
This is a comprehensive micronutrient fertilizer containing calcium, iron, zinc, and boron. These elements collectively support tree growth and enhance fruit quality.
Key Considerations:
- Timing of Application: Apply during the fruit enlargement phase when micronutrient demand peaks.
- Application Rate: Similar to calcium magnesium phosphate, use 50–100 kg per mu based on tree and soil conditions.
- Application Method: Combine with organic fertilizer or broadcast under the tree canopy.
- Precautions: Prevent overuse to avoid soil salinzation. Integrate with other fertilizers for optimal nutrient balance.
Alternative Calcium Fertilizers
Beyond the two primary options, other calcium sources include calcium chloride and calcium nitrate. Select fertilizers based on the tree’s specific needs and soil conditions. Always pair calcium fertilizers with complementary nutrients to ensure comprehensive nourishment for the trees.
Note: Adjust application rates and methods based on local agricultural practices and soil tests for best results.
