09 Ott Report No. 2 – SiGeCo DON
This Report analyzes the data collected by the agro-meteorological stations and the agronomic surveys carried out in order to monitor and study the development of Fusarium responsible for the FHB.
The work is characterised by the following steps:
- Monitor data from agro-meteorological stations
- Compare data from agro-meteorological stations and ARPAV climate data in order to analyze the climatic information needed to determine the context within the pathogen develops
- Identify the areas that have been most vulnerable to the pathogen
- Analyse the contamination status of the Fusarium. We compare the information provided by the software and the agronomic surveys
- Estimate the level of contamination of DON
Comparing our data with the average rainfall for the month of June during the period 1993-2015 (valid data of the ARPAV), we verify a diversified rainfall trend. However, there is a decrease in precipitation in reference to the year 2016.
|Month||Average 1993-2015 (mm)||Rainfall in June 2016 (mm)|
Table 1: data validated by ARPAV
|SiGeCo DON Stations||Rainfall in June 2018 – SiGeCo DON(mm)||Rainfall variation from Veneto average data during the period 1993-2015||Variation of Veneto rainfall 2018 from June 2016|
|Piove di Sacco||54,4||-43%||-62%|
Table 2: precipitation detected by agrometeorological stations and variations
The average changes for the month of June 2018 are:
-10% compared to the average of 1993-2015
-40% compared to 2016 data
It is noted that in Porto Tolle, in the Po Delta area, the rainfall was about 40 mm, resulting to be the location with less rainfall while Mirano, followed closely by Castelbaldo, is the place where it rained the most:
Graph 1: precipitation (mm) in June 2018 divided by weeks
As well as for the temperature variation, we compared the average June temperatures of the period 1994-2017 the monthly average temperature of 2018. The comparing stations were chosen for their proximity with each one with the exception of Sant’Apollinare where we have our experimental fields and there is one ARPAV station.
The month of June seems to continue the trend of rising temperatures compared to the average of 1994-2017 as it emerged in the months of April and May 2018.
|ARPAV stations||Average 1994 – 2017 of June (°C)|
|Sant’Apollinare di Rovigo||22,3|
Table 3: ARPAV data of the average temperature of the period 1994-2017, month of June. Data collected from the stations of: Sant’Apollinare di Rovigo, Trecenta, Masi, San Bellino, Agna
|SiGeCo DON Stations||June 2018 (°C)|
|Sant’Apollinare di Rovigo||23,2|
Table 4: SiGeCo DON data of the Temperature of the months of June 2018. Data collected from the stations of: Sant’Apollinare di Rovigo, Baruchella, Castelbaldo, Lendinara, Correzzola
|Confronting stations||Variation of detected temperatures in June 2018 (SiGeCo DON data) from the June average of 1994 – 2017|
|Sant’Apollinare di Rovigo||4 %|
|Trecenta vs Baruchella||5,5 %|
|Masi vs Castelbaldo||6,4 %|
|San Bellino vs Lendinara||5,8 %|
|Agna vs Correzzola||5,5 %|
Table 5: data variation 2018 of SiGeCo DON from the average temperature of 1994-2017, June. Data comparing stations: Sant’Apollinare di Rovigo, Trecenta vs Baruchella, Masi vs Castelbaldo, San Bellino vs Lendinara, Agna vs Correzzola
Maintaining the same comparison method used for temperatures, it is found that Relative Humidity has a slight decrease.
|ARPAV stations||Average 1994 – 2017 of June (%)|
|Sant’Apollinare di Rovigo||73|
Table 6: ARPAV data of the average relative humidity of the period 1994-2017, month of June. Data collected from the stations of: Sant’Apollinare di Rovigo, Trecenta, Masi, San Bellino, Agna
|SiGeCo DON Stations||June 2018 (%)|
|Sant’Apollinare di Rovigo||68|
Table 7: SiGeCo DON data of the average relative humidity of the months of June 2018 and May 2018. Data collected from the stations of: Sant’Apollinare di Rovigo, Baruchella, Castelbaldo, Lendinara, Correzzola
|Confronting stations||Variation of detected RH in June 2018 (SiGeCo DON data) from the June average of 1994 – 2017|
|Sant’Apollinare di Rovigo||-6,8%|
|Trecenta vs Baruchella||-4,2%|
|Masi vs Castelbaldo||-5,5%|
|San Bellino vs Lendinara||-9,7%|
|Agna vs Correzzola||-6,8%|
Table 8: data variation 2018 of SiGeCo DON from the average temperature of 1994-2017, months of June. Data comparing stations: Sant’Apollinare di Rovigo, Trecenta vs Baruchella, Masi vs Castelbaldo, San Bellino vs Lendinara, Agna vs Correzzola
4 On-site inspections
In the month of June, the wheat crops are in the phase of physiological maturation.
During field inspections, representative samples of the various plots were collected and rapid screening analyzes were carried out.
Despite the strong presence of fungi of Fusarium spp. the first analytical findings have revealed deoxynivalenol-DON levels from a few tens to a few hundred ppb, values that are largely within the limits regulated by law (1250 ppb for soft wheat and 1750 ppb for durum wheat).
In the experimental field of the Agricultural Institute “O. Munerati ” the samples of the various theses were collected manually with the three repetitions and also the samples artificially inoculated. The samples were delivered to the University of Padua where mycological and chemical analyzes will be performed.
dott. Dario Gasparin
Consorzio Maiscoltori Cerealicoltori Polesani
dott. Agr. Enrico Costa
Translation by Dario Gasparin