Hybridspecific nutrient interactions and their role in maize yield quality
Laen...
Kuupäev
2021
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
Different fertilization levels can be used according to the intensity of the plant
production technology. The interactions among all the essential nutrients, the different ways of
antagonisms and synergisms can weaken or strengthen the physiological processes of the plants,
affecting significantly the efficiency of the production. Complex mineral profile of the vegetative
(stalk, leaves) at V2, V4, V8, VT and R6 stages in 4 replications and generative (grain, cob -R6
stage only) plant parts of maize were determined in accredited laboratory with ICP-MS, ICP-OES
microwave-assisted multielement analysis for metal components (P, K, mg, Ca, S, Zn, Fe, Cu,
Mn, Ni, Mo) and Dumas method for nitrogen. Results showed that the effect of different nitrogen
fertilization levels was significant on grain yield, protein, oil and moisture content. Significant
differences were measured between the different maize genotypes in grain yield, protein and
starch content. In the experiment all essential nutrient concentrations were measured, and the
important nutrient ratios of macro- and micronutrients for the physiological development of
maize were calculated. These nutrient stoichiometric ratios were evaluated according to their
scale of influence in the yield formation. It can be concluded that different nitrogen fertilization
levels affected significantly the essential nutrient ratios of the vegetative and generative plant
parts of three maize hybrids in the growth period. Although different variables of nutrient
stoichiometric ratios and yield parameters did not highly correlated, Pearson’s correlations
suggest that K:Mg and K:Zn ratio of stalk would be related with grain yield (R = 0.32; 0.34; 0.39
and 0.35; 0.37; 0.30, respectively) marking them as important parameters for novel nutrient
stoichiometry research. Analysing the optimal nutrient ratios related to the yield quality and their
interaction with the fertilization practices can give certain recommendations to the farmers to
implement hybrid- and site-specific nutrient management strategies, reducing the environmental
impact of the over-fertilization.
Kirjeldus
Received: February 1st, 2021 ; Accepted: November 1st, 2021 ; Published: November 4th, 2021 ; Correspondence: bojtor.csaba@agr.unideb.hu
Märksõnad
fertilization efficiency, macronutrients, nitrogen use, nutrient ratios, stoichiometry, articles