Articles
Use of arbuscular mycorrhizal fungi (AMF) in fruit and vegetable cropping: EXCALIBUR trials testing drought stress on tomato – question about formulation and registration for commercial mycorrhizal products
Article number
1427_19
Pages
151 – 156
Language
English
Abstract
The majority of fruit and vegetable crops are potential host plants of arbuscular mycorrhizal fungi (AMF). A lot of studies showed the positive effects of AMF on the growth, on the harvest quality, and also on the resistance of plants to some biotic and abiotic stresses.
Drought stress (DS) is a serious abiotic stress and a major concern across the globe.
In the frame of the EXCALIBUR project (817946), greenhouse trials have been set up in 2021 and 2022 on tomato for evaluating the effect of biostimulant inoculation against DS. We tested three commercial biostimulants: Rhea (AMF) alone and in combination with two plant extracts: i) Stronger/PLANTICINE and ii) GHI SN837. Experiments have been conducted during 10 weeks with 2 DS (20% less and 40% less). Globally, the use of AMF gave a better development of plants than controls.
The use of the mix (AMF- plant extract GHI SN837) allowed to increase considerably (until 30%) growth of plants even in drought conditions.
We will discuss these results.
Furthermore, the current challenge of use of AMF in crop production is to optimize combinations of crop plant – AMF inoculum as well as inoculation methods.
So, the development of an industrial activity producing mycorrhizal inocula is a complex procedure for companies, as it involves not only the development of the necessary biotechnological know-how but also the ability to respond to specifically related legal, ethical, educational and commercial requirements.
We will discuss the case of AMF products in France and the consequences of the European regulation 2019/1009 applied since July 2022, for France and European producers and consumers.
Drought stress (DS) is a serious abiotic stress and a major concern across the globe.
In the frame of the EXCALIBUR project (817946), greenhouse trials have been set up in 2021 and 2022 on tomato for evaluating the effect of biostimulant inoculation against DS. We tested three commercial biostimulants: Rhea (AMF) alone and in combination with two plant extracts: i) Stronger/PLANTICINE and ii) GHI SN837. Experiments have been conducted during 10 weeks with 2 DS (20% less and 40% less). Globally, the use of AMF gave a better development of plants than controls.
The use of the mix (AMF- plant extract GHI SN837) allowed to increase considerably (until 30%) growth of plants even in drought conditions.
We will discuss these results.
Furthermore, the current challenge of use of AMF in crop production is to optimize combinations of crop plant – AMF inoculum as well as inoculation methods.
So, the development of an industrial activity producing mycorrhizal inocula is a complex procedure for companies, as it involves not only the development of the necessary biotechnological know-how but also the ability to respond to specifically related legal, ethical, educational and commercial requirements.
We will discuss the case of AMF products in France and the consequences of the European regulation 2019/1009 applied since July 2022, for France and European producers and consumers.
Publication
Authors
S. Masquelier, W. Kępka, V. Contartese, L. Gallo, N. Vassilev
Keywords
mycorrhizal fungi, fruit, vegetable, drought, formulation, registration, commercial products
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