Tag Archives: oat

553-562 A. Ingver, I. Tamm, Ü. Tamm, T. Kangor and R. Koppel
The characteristics of spring cereals in changing weather in Estonia
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The characteristics of spring cereals in changing weather in Estonia

A. Ingver, I. Tamm, Ü. Tamm, T. Kangor and R. Koppel

Jõgeva Plant Breeding Institute, 48 309 Jõgeva, Estonia;e-mail: Anne.Ingver@jpbi.ee

Abstract:

The objective of this investigation was finding out the impact of weather on yield, length of growing period, plant height, lodging resistance and protein content of spring cereals over 19 years (1991–2009). Two varieties per each crop were selected for testing. Historical weather and crop yield data from the Jõgeva Plant Breeding Institute were analyzed by the linear correlation analysis. To estimate the variation of grain yield, the minimum and maximum values, averages and coefficients of variation were calculated.It can be stated that the both stress conditions – drought and excess precipitation causeddecrease of yield and quality of all the crops. The highest yields developed in 180–250 mm precipitation range from sowing to maturity. Oat requires more moisture than wheat and barley. Significant positive correlation between the amount of precipitation and oat yield was found when three years of severe lodging were eliminated. Positive correlation between yield and plant height was found. In the years of severe lodging there was remarkable yield decrease of oat. Yield of oat and barley had negative correlation with sunshine hours in June. The same correlation for wheat was not significant. Extra-low protein content for all the cereals, especially for wheat, formed in a cool year with the lowest sum of sunshine hours during the whole growing period (2009). For oat and barley positive correlation between sunshine hours in June and protein content was found. For formation of higher protein content, warm and dry weather conditions are required. Protein content was inversely associated with yield.

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522-527 I. Tamm, Ü. Tamm and A. Ingver
Spring cereals performance in organic and conventional cultivation
Abstract |
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Spring cereals performance in organic and conventional cultivation

I. Tamm, Ü. Tamm and A. Ingver

Jõgeva Plant Breeding Institute, 1 Aamisepa St., 48309 Jõgeva, Estoniae-mail: ilmar.tamm@jpbi.ee

Abstract:

The field trials were carried out at the Jõgeva Plant Breeding Institute to compare grain yield and quality characteristics of spring wheat, barley and oat in organic and conventional conditions. Thirteen varieties of each cereal crop were tested during the four trial years (2005–2008). By the results turned out that all the spring crops were able to produce comparatively high yields in organic conditions after a suitable precrop. Oat as the most unpretentious crop was the highest yielding in organic trial and had the best weeds suppressing ability among the spring cereals. The most widely spread weeds were (Chenopodium album) and (Viola arvensis). Among the quality traits protein content was the most influenced by the management regime having evident decrease in organic conditions. A yield gap between organic and conventional production depended on crop, precrop and growing conditions.

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