· As previously mentioned, citrus trees vary in their salt tolerance but most rank rather sensitive to salinity, particularly on their foliage. Citrus can tolerate up to 2,200 to 2,300 ppm of salt on their root systems, but a moderate 1,500 ppm of salt sprayed on their leaves can kill them. · Grapefruit trees tend to be less salt-tolerant than orange trees. Tips to manage soil and water salinity in citrus groves: Use an EC meter to regularly assess the salinity of irrigation water. If TDS surpasses 2000 ppm, a salt problem is very likely. A salt problem may become apparent when TDS rises from 1000 to 2000 ppm. · Are Citrus Trees Salt Tolerant? Citrus trees are generally not salt tolerant, with most experiencing no damage from nearby salt water, yet they are vulnerable to salt carried by tropical storm winds, which can harm their branches and leaves. · Although citrus is generally sensitive to salinity, some varieties have shown a higher capacity to withstand salt stress. This lower sensitivity can be due to enhanced osmotic adjustment or an adaptative reduction in the uptake of toxic ions (Moya et al. 2002). · While citrus is not salt tolerant, most trees suffer no damage from salt water even though they are in back yards next to canals. But constant tropical storm winds can carry enough salt in the air to burn the branches and foliage. · Citrus trees are well known as a salt-sensitive crop. Exposing the trees to salt stress usually causes reduction in growth, followed by leaf defoliation and fruit load reduction. Are citrus trees salt sensitive?Policies and ethics Citrus trees are well known as a salt-sensitive crop. Exposing the trees to salt stress usually causes reduction in growth, followed by leaf defoliation and fruit load reduction. Their salt sensitivity reflects their sensitivity to both the osmotic component and...How much salt can a citrus tree eat?Citrus can tolerate up to 2,200 to 2,300 ppm of salt on their root systems, but a moderate 1,500 ppm of salt sprayed on their leaves can kill them. Scientists are, however, working on developing salt-resistant citrus trees but, at this juncture, there are none on the market. The key then is managing salinity in citrus trees.How to improve citrus salt tolerance?Improvement of citrus salt tolerance can be achieved by developing new rootstocks or agrotechniques that reduce or help the trees to cope with salt stress. Out of the two options, developing new rootstock research is the preferred solution by the growers since, usually, it is easier and cheaper than adopting new agrotechnique.Are citrus tetraploid rootstocks more tolerant to salt stress?Ion contents investigation has shown lower accumulations of chloride ions in leaves of the tetraploid plants when compared to diploid plants. Our results suggest that citrus tetraploid rootstocks are more tolerant to salt stress than their corresponding diploid. Our results suggest that citrus tetraploid rootstocks are more tolerant to salt stress than their corresponding diploid. Citrustrees are subject to several abiotic constraints such as salinity. Providing new rootstocks more tolerant is thus a requirement. · Citrus trees are well known as a salt-sensitive crop. Exposing the trees to salt stress usually causes reduction in growth, followed by leaf defoliation and fruit load reduction. Our results suggest that citrus tetraploid rootstocks are more tolerant to salt stress than their corresponding diploid. Citrustrees are subject to several abiotic constraints such as salinity. Providing new rootstocks more tolerant is thus a requirement.
