Rain has reduced the quality of spring wheat

3.10.2007

<div>The rains at the end of August and in September have reduced the falling numbers of spring wheat. The falling number of the samples harvested in August was 362 on average and 272 for the samples harvested in September. The protein content of the winter wheat is low, especially in Uusimaa. The quality of winter rye has been good. The late harvest of spring rye, on the other hand, has lowered the falling numbers.</div>

Spring wheat
About 60 per cent of the spring wheat samples that have been received for the purposes of monitoring the quality of the grain harvest fulfil the quality requirements for bread grain (hectolitre weight ≥78kg, protein ≥12.5 % and falling number ≥180). Despite the wet autumn the falling number remained below 180 in only five per cent of the samples.

The week of harvesting had a clear effect on the falling number. For the samples harvested before the last week of August, the falling number is 366 on average, and in those harvested during the last week it is 327. In the samples harvested during the first and second week of September the average falling number is 283 and 248 respectively. About half of the samples were harvested before the last week of August.

Average protein content (13.5 %) is high and the protein content is below 12.5 % in only one fifth of the samples. Samples with very low protein content (≤10.5 %) have not been noted, as in previous years. Hectolitre weights, on the other hand, are below 78 kg in one fifth of the samples.  In 2006 the share was only 5 per cent of the samples.

Quality of spring wheat per Rural Advisory Centre
Over 90 % of the samples in the Satakunta Rural Advisory Centre area fulfil the requirements for bread wheat. In Häme and Finland Proper (Varsinais-Suomi) the corresponding shares are 85 and 67 per cent. The highest average protein contents are in Satakunta and Häme (14.2 % in both) and the lowest in Uusimaa (Uusimaa 13.1 %, Nyland svenska 12.9). The highest average falling numbers are in Satakunta (367) and Finland Proper (365). The high figure for Finland Proper is in part explained by the early harvest: 80 per cent of the samples were harvested before the last week of August. 

Based on the samples that have been analysed so far, the lowest quality comes from Kymenlaakso, where only 30 per cent of the samples fulfil the requirements for bread grain. Both average hectolitre weight (79.3 kg) and falling number (222) are lower than in the rest of the country. The late harvesting time also affects the falling number: All of the analysed samples were harvested during the last week of August or thereafter. Also the wheat sample varieties affected the results in Kymenlaakso. The majority of the samples are Tjalve, which has a falling number lower than average. Kruunu and Zebra, that have high average falling number, are hardly represented at all in the sampling.

Winter wheat
Of the winter wheat samples about one quarter fulfils the quality requirements for bread wheat. The low share is explained by the low protein content (12.0 %). The falling number (346) and hectolitre weight (81.5 kg) have been very high. Average protein content is lower in the area of the Uusimaa Finnish and Swedish Rural Advisory Centres (11.6) than in Finland Proper (12.6 %). In Uusimaa only 10 per cent of the samples fulfil the quality requirements, whereas the share is about half in Finland Proper.

Rye
Of the rye samples 80 per cent fulfil the quality requirements for milling rye (hectolitre weight ≥71kg and falling number ≥120). The hectolitre weights have been high: The hectolitre weight has been below 71 kg in only three per cent of the samples. The falling number has stayed below 120 in 17 per cent of the samples. The falling number has been below 90 in 5 per cent of the samples. All of these were spring rye. The falling numbers of the spring ryes are lower than those of winter rye due to the late harvesting time. Average falling number has been 131 for spring rye while it is 178 for winter rye. Also hectolitre weights are lower for spring rye (75.9 and 77.0 kg).

For additional information, please contact:
Director Mirja Kartio tel. +358 20 77 25090
Senior Officer Juha Kärkkäinen tel. +358 20 77 25098

Updated information on average quality (in Finnish): http://www.evira.fi/portal/fi/kasvintuotanto_ja_rehut/vilja/viljasadon_laatu/viljasadon_laatu_2007/

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