Visual symptoms and nutritional deficiencies in olive trees under subjected to nutrient deprivation

Rafael Pio,Evaldo Tadeu De Melo,Filipe Bittencourt Machado De Souza,Inêz Pereira Da Silva,Cleber Lázaro Rodas,Viviane Amaral Toledo Coelho

doi:10.4025/actasciagron.v41i1.39582

Rafael Pio, Evaldo Tadeu De Melo + Show 4 more

Open Access

https://doi.org/10.4025/actasciagron.v41i1.39582

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Abstract

Brazil is one of the largest importers of olive ( Olea europaea L.) products, being the fourth largest importer of olive oil and the fifth of olives. In recent decades the introduction and growing of olive cultivars less chilling requirement in the South and Southeast made viable the olives production in the country. On the other hand, there are still shortages of information about the management of this crop in our country, especially in relation to studies about the nutritional needs of the olive tree, grown in subtropical regions, and it may enable advances in productivity of this fruit. The aim of study was to evaluate the growth, dry matter production and nutritional status of the olive tree under the effect of the omission of nutrients as well as establish visual diagnosis parameters. We used a completely randomized design with ten treatments and three repetitions, corresponding to growing in Hoagland – Arnon nutrient solution, and solutions with individual omissions of N, P, K, Ca, Mg, S, B, Fe and Zn. Omission of nutrients that most limit the growth of the olive tree are N, Ca and B. Deficiencies of nutrients in olive seedlings presented by typical symptoms.

Highlights

The olive tree (Olea europaea L.) is a fruit tree that originated from temperate regions, where it needs low temperatures to bloom and bear fruit
The olive tree originates in the geographic region from the southern Caucasus to the plains of Iran and Palestine and the coastal zone of Syria, extending to all countries along the shores of the Mediterranean (Civantos, 2008; Silva, Oliveira, Pio, & Zambon, 2012). This crop has wide-ranging economic and social impacts (Aguilera et al, 2015; Orlandi, Aguilera, Galan, Msallem, & Fornaciari, 2016) because the Food and Drug Administration (FDA) has implemented a “qualified health claim” on olive oil, since it protects against vascular pathologies
Leaf photosynthesis is largely dependent on the leaf N content, and low levels of leaf N can reduce both the chlorophyll a concentration and net photosynthetic rate of leaves (Boussadia et al, 2010)

Summary

Introduction

The olive tree (Olea europaea L.) is a fruit tree that originated from temperate regions, where it needs low temperatures to bloom and bear fruit. The olive tree originates in the geographic region from the southern Caucasus to the plains of Iran and Palestine and the coastal zone of Syria, extending to all countries along the shores of the Mediterranean (Civantos, 2008; Silva, Oliveira, Pio, & Zambon, 2012). This crop has wide-ranging economic and social impacts (Aguilera et al, 2015; Orlandi, Aguilera, Galan, Msallem, & Fornaciari, 2016) because the Food and Drug Administration (FDA) has implemented a “qualified health claim” on olive oil, since it protects against vascular pathologies. According to Oliveira, Ramos, Pio, and Cardoso (2012), imports of these products totaled over one billion reals in the domestic market

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