The reasons of grain yield and quality variation in a production field of spring barley
Alicja Pecio
iung@iung.pulawy.plInstytut Uprawy Nawożenia i Gleboznawstwa, Puławy (Poland)
Krzysztof Kubsik
Instytut Uprawy Nawożenia i Gleboznawstwa, Puławy (Poland)
Andrzej Bichoński
Małopolska Hodowla Roślin HBP Spółka z o.o. Polanowice (Poland)
Abstract
The purpose of the study was estimation of spring barley grain yield and protein content variation on the area of production field and determination of the reasons for the variation. The studies were conducted in the Experimental Station Baborówko, Poland, in 1998–2003 on the fields where the methods of precision agriculture were used. It was found that the range of grain yield is determined by both weather and soil conditions and the range of protein content are dependent mainly on weather conditions. Canopy indices describing plant growth (plant number and dry matter yield, LAI values) and plant nitrogen nutrition status in the development stages until an thesis (N percentage in dry matter, NNI values for both maximal yield and optimal grain protein content, SPAD values) can be used for diagnosis of the crop status and prognosis of grain yield. The indices of plant nitrogen management during anthesis are useful for diagnosis and prognosis of grain protein content.
Keywords:
diagnosis, grain protein content, grain yield, prognosis, spring barley, variationReferences
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Authors
Krzysztof KubsikInstytut Uprawy Nawożenia i Gleboznawstwa, Puławy Poland
Authors
Andrzej BichońskiMałopolska Hodowla Roślin HBP Spółka z o.o. Polanowice Poland
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Copyright (c) 2005 Alicja Pecio, Krzysztof Kubsik, Andrzej Bichoński
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