Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

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Weber R. , Runowska-Hryńczuk B. 2002. IMPACT OF SOIL CULTIVATION METHODS ON CROP YIELD STABILITY FOR SEVERAL WINTER WHEAT CULTIVARS, EJPAU 5(2), #01.
Available Online: http://www.ejpau.media.pl/volume5/issue2/agronomy/abs-01.html

ABSTRACT

In the years 1999-2001, using two forecrops – spring wheat and winter rape, crop yields of 6 wheat cultivars were compared in the conditions of the conventional (ploughed) tillage, simplified (ploughless) and direct seeding methods. On the basis of discriminant function analysis and analysis of concentration using the nearest neighbour method large variations in crop yields for the particular cultivars were revealed in relation to the 3 cultivation methods and 2 forecrops. The simplified tillage variants led to decreased crop yields. The greatest discriminating power for differentiating the examined genotypes was exhibited by the conventional (ploughed) soil cultivation on the two forecrops as well as the simplified method and direct seeding on the stand after spring wheat. ‘Izolda’ and ‘Kobra’ cultivars were marked by a higher average crop yield in the examined environments, compared to the other genotypes.

Key words: ploughed soil cultivation, simplified soil tillage, direct seeding, wheat cultivars, multivariate analysis.

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