Manual of recommendations for an efficient use of water in chestnut groves

The study highlighted the sensitivity of chestnut trees to water scarcity in the summer; particularly in new plantations in the Extremadura region; Spain; where water supply is limited and irregular. In response to this challenge; the CASTANEA operational group focused on implementing techniques to mitigate water stress in chestnut trees. The results indicated that to maintain chestnut production and quality; it is essential to maintain good water status during critical growth and fruiting periods. Key recommendations include subsoiling the soil before planting to improve water retention capacity; using localized irrigation systems; drip irrigation; or micro-sprinklers; and regularly monitoring the water status of the trees. Additionally; it is vital to implement appropriate irrigation scheduling; avoid overwatering; and apply prolonged irrigation at the beginning of the growth cycle; especially after dry periods. These measures aim to optimize water use and ensure the health and productivity of chestnut trees; particularly in the face of climate change