Influence of warmth conditions characterizing parameters on yield and chemical composition of maize in Latvia

Bartusevics, J., Latvia Univ. of Agriculture, Jelgava; Gaile, Z., Latvia Univ. of Agriculture, Jelgava

Influence of warmth conditions characterizing parameters on yield and chemical composition of maize in Latvia

2011

Bartusevics, J., Latvia Univ. of Agriculture, Jelgava (Latvia) | Gaile, Z., Latvia Univ. of Agriculture, Jelgava (Latvia)

Maize yield and quality are affected by many factors, including production practices, diseases, pests, and differences in the climate. Usually it is not possible to do much to change the effect of temperature, but it is important to grow better adapted or characterized with right maturity rating hybrids. The paper is aimed to determine the impact of accumulated growing degree days (GDD) on maize development, organic dry matter yield, ODM and chemical composition of maize hybrids. A field trial was carried out in the Research and Study farm ’’Vecauce’’ of the Latvia University of Agriculture (LLU) from 2008 till 2010. Ten (in 2008), eleven (in 2009) and fifteen (2010) maize hybrids with different maturity ratings according to FAO numbers (FAO 180-340) were harvested at three different times beginning on 5 September at fourteen-day intervals. GDD were calculated when maize reached a certain growth stage (full emergence, first tassels, full tassels, first ears, full ears, specific harvest date) to characterize conditions for maize growing in a specific year. Composition of fresh maize was analyzed for all hybrids using standard methods. Results were statistically processed using methods of correlation and regression analysis. Our results presented evidence that ODM yield in 2008 and 2009 on last harvest dates was lower than that on the first harvest date in 2010. Organic dry matter yield was higher in years when more GDD were accumulated. Results also showed that GDD negatively correlated with the total N, protein, fibre cellulose, hemi-cellulose, NDF, and ADF concentration.

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Mots clés AGROVOC

chemical composition composition chimique contenido de materia seca crop yield dry matter content hybride hybrids latvia letonia lettonie mais maize meteorological factors organic matter precipitation recherche rendement des cultures rendimiento de cultivos research saison chaude temperatura temperature warm season zea mays

Informations bibliographiques

Publié dans

Research for Rural Development. International Scientific Conference Proceedings (Latvia)

Numéro 17/2011 ISSN 1691-4031

Editeur

Latvia University of Agriculture

Pagination

p. 18-23

D'autres materias

Maiz; Precipitacion atmosferica; Investigacion; Estacion calida; Condiciones atmosfericas; Matiere organique; Composicion quimica; Conditions meteorologiques; Materia organica; Hibridos; Teneur en matiere seche

Langue

anglais

Note

Summary (En)

3 tables, 4 fig., 15 ref.

Type

Conference; Summary

Source

Research for Rural Development 2011. Annual 17th International Scientific Conference Proceedings. Volume No 1, Gaile, Z..- Jelgava (Latvia): Latvia University of Agriculture, 2011. International Scientific Conference: Research for Rural Development, 17, Jelgava (Latvia), 18-20 May 2011.- p. 18-23

Conférence

International Scientific Conference: Research for Rural Development, 17, Jelgava (Latvia), 18-20 May 2011

Sur AGRIS depuis: 2011-01-15

Format: AGRIS AP

Fournisseur de données

Cette notice bibliographique a été fournie par Fundamental Library of Latvia University of Life Sciences and Technologies

Découvrez la collection de ce fournisseur de données dans AGRIS

Liens

http://www.llu.lv/getfile.php?id=44020

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