Prognosis of leaf chlorosis in Catherina peaches based on the mineral composition of flowers

Fuente, Victoria de la and Barreiro Elorza, Pilar and Lleó García, Lourdes and Val, Jesús (2018). Prognosis of leaf chlorosis in Catherina peaches based on the mineral composition of flowers. In: "AgEng conference", July 8–12, 2018, Wageningen, the Netherlands.

Description

Title: Prognosis of leaf chlorosis in Catherina peaches based on the mineral composition of flowers
Author/s:
  • Fuente, Victoria de la
  • Barreiro Elorza, Pilar
  • Lleó García, Lourdes
  • Val, Jesús
Item Type: Presentation at Congress or Conference (Lecture)
Event Title: AgEng conference
Event Dates: July 8–12, 2018
Event Location: Wageningen, the Netherlands
Title of Book: Proceedings of the European Conference on Agricultural Engineering AgEng2018
Date: 2018
Subjects:
Freetext Keywords: fertilization,phenology, tree health, fruit quality, LPF_TAGRALIA
Faculty: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
Department: Ingeniería Agroforestal
UPM's Research Group: Técnicas Avanzadas en Agroalimentación LPF-TAGRALIA
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The peach tree is one of the fruit species with the highest production and area cultivated in Spain, which rootstock show a marked influence on the mineral content of leaves and consequently on chlorosis. The nutritional diagnosis of the peach tree, based on the mineral analysis of leaves, is often late for in-season amendments, while leaf diagnosis based either on photosynthetic activity (non-destructive) or on iron chlorosis is always late and in many cases imprecise. Previous work from Aula Dei (CSIC) has established the possibility and efficiency of making a mineral prognosis of leafs based on the mineral composition of flowers not only in peaches but in pear and cherry trees. This current work aims to go further in non-destructive prognosis by selecting key features from RGB images and validating them in a set of 300 photographs. The test was carried out in a plot located in the Experimental Station of Aula Dei (CSIC), the soil of the plot being heavy and calcareous. Six plumxpeach trees have been used determining the foliar and floral mineral concentration on flower at full blossom (FB), and corresponding leaf samples at 120 days aFB. The ions in flowers and leaves were determined by plasma-mass spectroscopy, while the measurement of the photosynthetic activity of the leaves and their mineral composition was carried out 120 days after full flowering using a SPAD meter. The SPAD used as a reference for the identification of chlorosis in peach leaf appears correlated with several leaf minerals: Ca, S, Fe, Cu and Sr, restricted to Ca and Sr when compared with the mineral composition in flowers. The mineral composition of the flowers allows anticipating extreme cases of chlorosis based on Sr and Ca levels, while the methodology developed based on RGB images shows promising results and is still ongoing

More information

Item ID: 57878
DC Identifier: http://oa.upm.es/57878/
OAI Identifier: oai:oa.upm.es:57878
Deposited by: Catedrática Pilar Barreiro
Deposited on: 14 Feb 2020 05:51
Last Modified: 14 Feb 2020 07:26
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