Crops
( golden speck )
Among the non-parasitic causes causing anomalies in the external coloring of the fruits, it is possible to observe golden spots , the main characteristics of which are discussed in terms:
- the symptoms they cause;
- origin of these anomalies;
- practices to be adopted in order to remedy them.
- Symptoms on fruits
- Origin of damage
Formation of calcium oxalate crystals in tissues, correlating with high calcium concentration in fruits.
All the parameters influencing the migration of calcium in the fruits can be implicated, in particular:
- the climate, with high humidity during the day and at night, with or without low radiation and excessively low temperatures;
- ferti-irrigation providing too much calcium, phosphates or nitrates or not enough potassium or chlorine.
Very vigorous plants would be more sensitive to this physiological condition.
- How to cure it
- Perform regular leaf stripping
- Avoid keeping night temperature setpoints too low
- Use high conductivities and maintain high levels of magnesium and low in phosphates
- Avoid watering too early in the morning and too late in the afternoon