Open AccessTechnological development of sustainable maize production and its effect on yield stability
Author(s) -
Mihály Sárvári
Publication year - 2018
Publication title -
acta agraria debreceniensis
Language(s) - English
Resource type - Journals
ISSN - 2416-1640
DOI - 10.34101/actaagrar/150/1734
Subject(s) - sowing , yield (engineering) , agronomy , hybrid , human fertilization , plant density , growing season , precipitation , biology , mathematics , geography , physics , meteorology , thermodynamics
In 2015 and 2016, we examined the effect of NPK nutrients, sowing date and plant density on yield on typical meadow soil. The amount of precipitation was 282.0 mm in 2015 (January–September), 706.0 mm in 2016 and the 30-year averageis 445.8 mm.
Agrotechnical factors:
– Experiment a)
5 Dow AgroSciences hybrid with three sowing dates and three plant densities
– Experiment b)
In 2015 eight, in 2016 ten hybrids with different genetic characteristics and growing seasons, with control (without fertilization), N80+PK and N160+PKtreatments, five plant densities (50–90 thousand) with 10 thousand plants difference between the different densities.
In a drought year, we reached the higher yield in the earlier sowing date and with the lower lower plant density of 70 thousand plants ha-1-. The maximum yield, depending on the agrotechnical factors, was 10–12 t ha-1 in 2015, while in 2016 it was 14–16 t ha-1. Yield stability can be increased using hybrid-specific cultivation techniques.