Effect of Nitrogen Status on Frost Tolerance of Olive Trees

Fernández-Escobar, R.; Navarro, Sánchez; Melgar, Juan Carlos

doi:10.17660/actahortic.2011.924.3

Cited by 11 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to Molina-Soria and Fernández-Escobar [44], a nitrogen leaf content higher than 1.7% causes impacts on flower and a decrease in oil quality. Other authors also agree with the damages that an excess of nitrogen can produce in olive, such as a decrease in the olive frost tolerance, a delay in the fruit ripening, leading to a reduction in fat yield, and also soil pollution produced by nitrogen leaching [45][46][47].…”

Section: Analysis Of Soil and Nutrients In The Study Areasupporting

confidence: 54%

REUTIVAR: Model for Precision Fertigation Scheduling for Olive Orchards Using Reclaimed Water

Zaragoza

García

Perea

et al. 2019

Water

View full text Add to dashboard Cite

Olive orchard is the most representative and iconic crop in Andalusia (Southern Spain). It is also considered one of the major economic activities of this region. However, due to its extensive growing area, olive orchard is also the most water-demanding crop in the Guadalquivir River Basin. In addition, its fertilization is commonly imprecise, which causes over-fertilization, especially nitrogen. This leads to pollution problems in both soil and water, threating the environment and the system sustainability. This concern is further exacerbated by the use of reclaimed water to irrigate since water is already a nutrient carrier. In this work, a model which determines the real-time irrigation and fertilization scheduling for olive orchard, applying treated wastewater, has been developed. The precision fertigation model considers weather information, both historical and forecast data, soil characteristics, hydraulic characteristics of the system, water allocation, tree nutrient status, and irrigation water quality. As a result, daily information about irrigation time and fertilizer quantity, considering the most susceptible crop stage, is provided. The proposed model showed that by using treated wastewater, additional fertilization was not required, leading to significant environmental benefits but also benefits in the total farm financial costs.

show abstract

Section: Analysis Of Soil and Nutrients In The Study Areasupporting

confidence: 54%

REUTIVAR: Model for Precision Fertigation Scheduling for Olive Orchards Using Reclaimed Water

Zaragoza

García

Perea

et al. 2019

Water

View full text Add to dashboard Cite

show abstract

“…In fact, an excess of N resulted in an increase in LT tolerance before dormancy (autumn), while in spring, an excess of the element made the plants more sensitive [ 168 , 169 ]. Treatments with copper (Cu) containing sprays, conducted during winter, made plants less sensitive to LT [ 19 ] and potassium (K) fertilization was recommended to reduce damage from low temperatures in the spring [ 169 ]. This could be related to the role of K in the regulation of osmotic and water potential [ 169 ].…”

Section: Agronomic Management For Frost Protectionmentioning

confidence: 99%

Cold Stress, Freezing Adaptation, Varietal Susceptibility of Olea europaea L.: A Review

Petruccelli

Bartolini

Ganino

et al. 2022

Plants

View full text Add to dashboard Cite

Olive (Olea europaea L.) is an evergreen xerophytic tree characterizing vegetative landscape and historical-cultural identity of the Mediterranean Basin. More than 2600 cultivars constitute the rich genetic patrimony of the species cultivated in approximately 60 countries. As a subtropical species, the olive tree is quite sensitive to low temperatures, and air temperature is the most critical environmental factor limiting olive tree growth and production. In this present review, we explored the detrimental effects caused of low temperatures on olive cultivars, and analyzed the most frequently experimental procedures used to evaluate cold stress. Then, current findings freezing stress physiology and gene are summarized in olive tree, with an emphasis on adaptive mechanisms for cold tolerance. This review might clear the way for new research on adaptive mechanisms for cold acclimation and for improvement of olive growing management.

show abstract

“…Depending on the species and/or the reference, increasing plant N may increase, decrease, or have no influence on cold tolerance (Pellett and Carter, 1981). In a study developed to determine the influence of N status on the frost tolerance of olive trees under field conditions, Fernández-Escobar et al (2011) found that, in October, before the onset of dormancy, excess N resulted in increased frost tolerance. During dormancy, all the trees exhibited greater tolerance to low temperatures, and no differences were observed among them.…”

Section: Relationships With Biotic and Abiotic Stressesmentioning

confidence: 99%

Olive Nutritional Status and Tolerance to Biotic and Abiotic Stresses

Fernández-Escobar

2019

Front. Plant Sci.

View full text Add to dashboard Cite

The role of nutrients in plant growth is generally explained in terms of their functions in plant metabolism. Nevertheless, there is evidence that plant tolerance or resistance to biotic or abiotic stresses could be affected by the nutritional status. Although not well studied, an adequate nutritional status for optimal plant growth is thought to also be optimal for plant tolerance to stress. Considering the current global trend toward sustainability, studies that clarify the relationships between nutrition and stress are of great interest. For example, potassium plays an important role in the regulation of water status in the olive, improving drought tolerance, while calcium is involved in sodium exclusion mechanism, which can increase tolerance to salinity. Nitrogen excess, in contrast, increases susceptibility to spring frost and olive leaf spot. Silicon is not an essential element for plant growth, but it is considered a beneficial element; among its roles in the control of pests and diseases is the formation of a physical barrier that occurs through silicon deposition in the epidermal cells of the leaves. The presence of soluble silicon also facilitates the deposition of phenolic and other compounds at sites of infection, which is a general defense mechanism to pathogen attack. In olive, silicon application, either by foliar sprays or through irrigation water, reduces the incidence of olive leaf spot. This review summarizes the current status of olive nutrition, the relationships with biotic and abiotic stresses, and the effects of silicon.

show abstract

Effect of Nitrogen Status on Frost Tolerance of Olive Trees

Cited by 11 publications

References 0 publications

REUTIVAR: Model for Precision Fertigation Scheduling for Olive Orchards Using Reclaimed Water

REUTIVAR: Model for Precision Fertigation Scheduling for Olive Orchards Using Reclaimed Water

Cold Stress, Freezing Adaptation, Varietal Susceptibility of Olea europaea L.: A Review

Olive Nutritional Status and Tolerance to Biotic and Abiotic Stresses

Contact Info

Product

Resources

About