Next Article in Journal
Screening Tolerance to Phosphorus Deficiency and Validation of Phosphorus Uptake 1 (Pup1) Gene-Linked Markers in Thai Indigenous Upland Rice Germplasm
Next Article in Special Issue
Effects of Temperature and Grafting on Yield, Nutrient Uptake, and Water Use Efficiency of a Hydroponic Sweet Pepper Crop
Previous Article in Journal
Root Distribution and Its Impacts on the Drought Tolerance Capacity of Hybrid Rice in the Sichuan Basin Area of China
Previous Article in Special Issue
Lettuce Biofortification with Selenium in Chitosan-Polyacrylic Acid Complexes
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Agronomy 2019, 9(2), 80; https://doi.org/10.3390/agronomy9020080

To Stop Nitrogen Overdose in Soilless Tomato Crop: A Way to Promote Fruit Quality without Affecting Fruit Yield

1
CTIFL, Centre Technique Interprofessionnel des Fruits et Légumes (CTIFL), Centre de Carquefou, ZI Belle Etoile—Antarès, 35 allée des Sapins, 44483 Carquefou CEDEX, France
2
INRA, Institut National de Recherche Agronomique, UR-1115, Plantes et Systèmes de culture Horticoles, centre PACA, Domaine Saint Paul, 84914 Avignon CEDEX, France
*
Authors to whom correspondence should be addressed.
Received: 20 December 2018 / Revised: 5 February 2019 / Accepted: 9 February 2019 / Published: 12 February 2019
(This article belongs to the Special Issue Nutrition Management of Hydroponic Vegetable Crops)
Full-Text   |   PDF [1095 KB, uploaded 19 February 2019]   |  

Abstract

Precision horticulture is fundamental to ensure high quality production with a minimal environmental footprint. It offers the possibility to manage climatic and fertilization inputs closer to the plant needs. In practice, there is a tendency to over-fertilize, as nitrogen limitation can decrease photosynthesis and consequently fruit yield, but also because nutrient recycling does not lead to any substantial costs increase, thus ignoring the influence of nitrogen input on the balance between growth and metabolism. Nitrogen recommendation for tomato greenhouse production on rockwool is 16mM, even it is well established that only 50% of nitrogen amount is really absorbed by plants. This study compares the usual practice (16 mM) to a nitrogen supply to meet plant’s needs (5 mM). We analyzed plant growth and development, yield, leaf photosynthetic activity and fruit quality (sugars, acids, vitamin C,) over the entire crop period (December to October). Over-fertilization favoured the accumulation of nitrogen in leaves and stem but yield, leaf photosynthetic activity and plant architecture were not significantly improved. In addition, it decreased the quality of the tomatoes as the sugar:acid ratio decreased dramatically in the pericarp, whereas the locular gel composition remained similar. A reduction of the nitrogen supply is one solution to improve tomato quality without any reduction of yield in greenhouse. These data have to be incorporated in tomato fertigation management to define a new standard based on overall quality of tomato fruit and low environmental footprint. View Full-Text
Keywords: Solanum lycopersicum; glasshouse; nitrogen supply; photosynthetic activity; fruit quality; sugar:acid ratio; pericarp; locular gel Solanum lycopersicum; glasshouse; nitrogen supply; photosynthetic activity; fruit quality; sugar:acid ratio; pericarp; locular gel
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Truffault, V.; Ristorto, M.; Brajeul, E.; Vercambre, G.; Gautier, H. To Stop Nitrogen Overdose in Soilless Tomato Crop: A Way to Promote Fruit Quality without Affecting Fruit Yield. Agronomy 2019, 9, 80.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Agronomy EISSN 2073-4395 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top