Mandarin trees

Cultivation and Fertilization of the Mandarin

The mandarin (Citrus reticulata) is one of the most appreciated and widely cultivated citrus fruits in Italy, with significant productive potential.

It is a small fruit tree that rarely exceeds 3–4 meters in height. It has a deep root system which, once fully developed, gives the plant remarkable strength and resilience.

Soils and Cultivation Areas

The plant requires well-drained, fertile, and slightly acidic soils.
In Italy, the areas cultivated with clementines and mandarins account for about one-fifth of the country’s total citrus groves, with production mainly concentrated in Sicily and Calabria.

Main Challenges in Mandarin Cultivation

Like other crops, the mandarin is subject to the phenomenon of alternate bearing, meaning it alternates years of abundant fruiting with years of lower production. This intrinsic characteristic cannot be significantly altered but can be mitigated through appropriate fertilization practices.

Wind poses a significant threat: strong gusts can cause the loss of all the leaves, making it necessary to protect the plants with windbreak nets or hedges.
Particular attention should be given to protecting against fungi, insects, and snails/slugs; therefore, it is advisable to create conditions that help maintain the health of leaves, shoots, and fruits.

Nutritional Recommendations for Mandarin

The mandarin, like other citrus fruits, has a high demand for nitrogen (N) and potassium (K), distributed at various stages of the crop cycle. The supply of phosphorus remains important to support flowering.

Micronutrients, particularly iron, are required in small amounts but are essential to prevent deficiencies that cause chlorosis, stunted growth, and low productivity.

It is also important to supplement boron and calcium at the end of March or in April to support the development of flowers and young shoots. Fertilizers based on amino acids and with biostimulant action help reduce stress and improve the fruit’s quality parameters.

Follow our recommendations regarding dosages and application methods, specifically aimed at reducing iron chlorosis, increasing fruit set, and improving overall quality and shelf life.