Published in Scientific Papers. Series A. Agronomy, Vol. LXIX, Issue 1
Written by Eugen-Iulian PETCU, Liliana VASILESCU, Viorel ION
This study evaluated the performance of grain yield and its components of 19 winter two-row barley genotypes under two sowing densities: a reduced density of 350 germinable seeds/m² (D1) and a conventional density of 500 germinable seeds/m² (D2). Field experiments were conducted over three consecutive growing seasons (2020-2022) at the National Agricultural Research and Development Institute Fundulea, Romania, on chernozem soil. Total rainfall varied among years (310.4 mm in 2020, 523.2 mm in 2021, and 316.8 mm in 2022), while mean air temperature was ~2°C above the
long-term average. Grain yield was significantly higher at D1, averaging 6426 kg/ha, compared with 6012 kg/ha at D2,a 6.9% increase. Correlation analysis showed strong positive associations between thousand-kernel weight and seed weight per spike (r = 0.844***) and a significant negative correlation between yield and spike number (r = −0.347*), reflecting compensatory effects among yield components. These results indicate that reduced sowing density enhances individual plant performance and is an effective strategy to increase barley grain yield under Southeastern Romania conditions.
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{simplepopup popup="false" name="Citation58"}PETCU E.I., VASILESCU L., ION V. 2026, WINTER TWO-ROW BARLEY YIELD RESPONSE TO SOWING DENSITY IN SOUTHEASTERN ROMANIA. Scientific Papers. Series A. Agronomy, Vol. LXIX, Issue 1, ISSN 2285-5785, 474-481. {/simplepopup}