The influence of pre-sown crop on spring cereal yield and quality in organic crop rotation | Priekšaugu ietekme uz vasarāju labību ražu un kvalitāti bioloģiskajā augsekā
2012
Fetere, V., State Stende Inst. of Cereal Breeding, Dizstende, Talsu reg. (Latvia)
The aim of studies was to define the impact of pre-sown crop winter rye and buckwheat on the plant growth, yield and grain quality of spring cereals. During research there were evaluated the traits characterizing the yield and grain quality of wheat ‘Uffo’ and barley ‘Rasa’. The soil of biological crop rotation within the period of two years on average was processed with 20.1 t hE-1 of buckwheat green manure or 5.4 t haE-1 buckwheat dry matter and 4.2 t haE-1 rye straws or 2.5 t haE-1 dry matter of rye straws. According to the chemical analysis, the buckwheat dry matter contained nitrogen and phosphorus, which was three times higher than dry matter of rye straws, potassium and calcium was two times higher, but magnesium – five times higher than dry matter of rye straws. Spring wheat ‘Uffo’ (4.36 t haE-1) and spring barley ‘Rasa’ (3.23 t haE-1) provided significantly (p is less than 0.05) higher yield after buckwheat green manure than after rye straw. Volume weight, content of crude protein, content of gluten, and sedimentation value were significantly higher after the buckwheat green manure. Significant impact of the year was observed in volume weight, content of crude protein, and sedimentation value. The pre-crop and year had a significant impact on the amount of productive shoots of spring wheat. Pre-sown crop significantly influenced traits of grain quality of spring barley ‘Rasa’ (1000 kernel weight, volume weight and content of crude protein), but the impact of the year was significant for 1000 kernel weight, volume weight, β-glucan and amount of productive shoots.
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