Effect of nitrogen and sulphur fertilization on chlorophyll content in winter wheat

Skudra, I., Latvia Univ. of Agriculture, Jelgava . Faculty of Agriculture. Inst. of Agrobiotechnology; Ruza, A., Latvia Univ. of Agriculture, Jelgava . Faculty of Agriculture. Inst. of Agrobiotechnology

Effect of nitrogen and sulphur fertilization on chlorophyll content in winter wheat

2017

Skudra, I., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. of Agrobiotechnology | Ruza, A., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. of Agrobiotechnology

Nitrogen management strategy in plant growth period based on chlorophyll content evaluation in plant can improve nitrogen usage efficiency and reduce environmental contamination. This study is aimed to determine the impact of different nitrogen and sulphur fertilizers rates on dynamics of chlorophyll content in winter wheat during vegetative growth and to determine the relationship between nitrogen and chlorophyll content and grain yield of winter wheat. Field trial involving a winter wheat (Triticum aestivum L.) variety ‘Kranich’ was conducted at the LUA Research and Study Farm Vecauce during a three-year period (2012-2015). The treatments were 0, 85, 153, 175+S21, 175 (in 2015), 187 N kg haE−1 and different nitrogen norms according to chlorophyll meter Yara N-tester (Konica Minolta Ltd.) data: 180, 150, 205 N kg haE−1 depending on the year. The results of the trial show that the maximum chlorophyll content in different plant parts was observed at the end of flowering stage. The chlorophyll content depended on the level of mineral fertilisation. The highest chlorophyll content in leaves, stems and ears was obtained by using additional sulphur in two trial years. Usage of chlorophyll meter Yara N-tester obtained the highest chlorophyll content in all analysed plant parts in one trial year. Chlorophyll content was significantly dependant on plant growth stage in stems in all trial years, in leaves in two trial years, and in ears in one year. Nitrogen fertilization significantly affected chlorophyll content in leaves and stems in one trial year. Close positive correlation was observed between grain yield and wheat plant chlorophyll content and average nitrogen concentration at the end of flowering stage in all three trial years.

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Mots clés AGROVOC

abonos nitrogenados abonos sulfurados analytical methods chlorophylle chlorophylls clorofilas crop yield data collection etapas de desarrollo de la planta field experimentation latvia letonia lettonie meteorological factors nitrogen content nitrogen fertilizers photosynthese photosynthesis plant developmental stages rendement des cultures rendimiento de cultivos soil chemicophysical properties statistical methods sulphur fertilizers technique analytique teneur en azote trigo de invierno triticum aestivum winter wheat

Informations bibliographiques

Publié dans

Rural Sustainability Research (Electronic resource) (Latvia) | Scientific journal of Latvia University of Agriculture

Volume 37 Numéro 332 ISSN 2256-0939

Pagination

p. 29–37

D'autres materias

Condiciones atmosfericas; Conditions meteorologiques; Experimentation au champ; Experimentacion en campo; Engrais azote; Methode statistique; Fotosintesis; Ble d'hiver; Collecte de donnees; Stade de developpement vegetal; Metodos estadisticos; Tecnicas analiticas; Engrais soufre; Propiedades fisico - quimicas suelo; Propriete physicochimique du sol; Coleccion de datos; Contenido de nitrogeno

Langue

anglais

Note

Summary (En)

3 tables, 2 fig., 27 ref.

Continues edition: Proceedings of the Latvia University of Agriculture, ISSN 2255-8535 (Online), ISSN 1407-4427 (Print)

Type

Web Site; As

Sur AGRIS depuis: 2018-03-15

Format: AGRIS AP

Fournisseur de données

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