The formation of potential ear productivity in the ontogenesis of winter wheat under conditions of ecologically safe fertilizers systems
DOI:
https://doi.org/10.32636/01308521.2020-(68)-1-7Keywords:
winter wheat, upper leaf blades, growth traits, economics traits, source-sink relations, ecologically safe fertilizers systems, two-dimensional correlationAbstract
The formations of the physiological, morphological growth traits of the upper leaf blades (ULB; booting – milk ripeness), ear productivity (GDM, the grain flour dry matter) of winter wheat under the conditions of the basic ecologized fertilizer system, ecologically safe fertilizers systems (BEFS, ESFS, respectively) on the basis pea straw + N30P45K45 were studied. As elements of ecologization as part of the ESFS technologies, the biostimulator, humus fertilizer, microbiological fertilizer and the chelate-based fertilizer were used. The reliable variations of the relative growth rate, net assimilation rate of the ULB (RGRUL, NARUL) under conditions of ESFS, relative to BEFS, as well as reliable changes of the dry matter content, of the area duration and biomass duration of ULB (LDMCUL, LADUL, BMDUL, respectively) under conditions of ESFS-technologies, as compared to the control and BEFS, were established. The variability of RGRUL, NARUL, relative to the control, specific area, and specific weight of ULB (SLAUL, LMAUL, respectively), concerning to control and BEFS, were ambiguous. The reliable gains of GDM were revealed under conditions of BEFS, relative to the control, and under conditions of ESFS, as compared to the control and BEFS. Significant correlation interdependencies were found between LADUL or BMDUL or LDMCUL and RGRUL, NARUL, SLAUL, LMAUL (r* = 0,81 − −0,96; p = 0,024−0,989; P < 0,010−0,050), as well as GDM (r* = −0,91−0,96; P < 0,010−0,050). The presence of a significant positive and negative correlations between GDM and RGRUL, NARUL, SLAUL, LMAUL in the series BEFS–ESFS technologies was also established (r* = −0,76−0,85;
p = 0,931−0,980; P < 0,050). In general, under the conditions of technologies control – BEFS–ESFS the interdependencies GDM – RGRUL, NARUL, SLAUL, LMAUL were insignificant: r* = −0,37−0,44; p = 0,143−0,720. It was summarized, that a decrease of LDMCUL, a simultaneous increase of LADUL, BMDUL, RGRUL, NARUL lead to the increase of GDM under the conditions of ESFS, relative to the BEFS. At the same time, reduction SLAUL, opposite – LMAUL was more priority. It was hypothesized, that the revealed variability of the growth traits of ULB represents various ways of implementing of the elements of adaptive growth strategies and economics of ULB, and corresponding changes of source-sink relations to the conditions of resources providing of winter wheat plants, that were grown using BEFS, ESFS.
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Copyright (c) 2020 О. Л. ДУБИЦЬКИЙ, О. Й. КАЧМАР, А. О. ДУБИЦЬКА, О. В. ВАВРИНОВИЧ, М. М. ЩЕРБА (Автор)
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