Published in Scientific Papers. Series A. Agronomy, Vol. LXI, Issue 2
Written by Vitalie CIOCHINA, Vasile LUNGU
The atmospheric precipitation and the soil nutrient regime during 2011-2017 have significantly influenced the winter wheat productivity. The average precipitation rate was 263 mm in the vegetative rest period and 186 mm in the active one. The average harvest and the quality of the winter wheat on the non-fertilized variant constituted 2.13 t/ha, the content of wet gluten - 21.5% with the second quality group. The single fertilization with 120 kg N/ha on the moderate and optimal background of mobile phosphorus on the variant N120P2.5-3.5K60 consisted 2.94-3.02 t/ha with wet gluten 28.8-29.8% - second quality group. The harvest increase was 38.0-41.6%, the gluten content increased by 7.3-8.3% versus the control variant. Nitrogen application in a maximum dose of 180 kg N/ha on the P3.5K60 background results in the highest harvest level of 3.07 t/ha or an increase of 44.1%, but fertilization with this dose contributes to the accumulation of nitrates in the lower layers of the soil. The optimal variant is considered the dose N120P2.5K60 according to harvest obtained in the last seven agricultural years on the calcareous chernozem of Moldova.
[Read full article] [Citation]
