Effect of a Soil-Applied Humic Ameliorative Amendment on the Yield Potential of Switchgrass Panicum virgatum L. Cultivated under Central European Continental Climate Conditions
نویسندگان
چکیده
The yield potential of switchgrass was verified by testing seven cultivars in a small-scale experiment carried out from 2018 to 2022 on Gleyic Fluvisol under Central European conditions. treatments are as follows: pre-sowing (i/HA) soil humic preparation Humac AGRO (based leonardite) with an ameliorative dose 1000.0 kg ha−1 or (ii/NPK) basic nutrition 220.0 NPK; annual 70 N applied both (HA, NPK) and compared (iii/UC) untreated control. A dry matter (DM) 9.02 t achieved the total average, which varied 0.05 60.64 ha−1. affected mainly years (F-ratio 106.64), then 79.03), followed 56.87), finally replications 0.00). Switchgrass productivity increased according utility year; however, driest year (2020—388 mm, 2021—372 2022—288 mm) changed order three full (12.44, 19.13, 7.73 DM, respectively). HA gives highest DM 13.69 average values 9.19 4.19 for NPK UC, respectively. EG 1101 ˃ BO Master 1102 Kanlow Alamo Carthage NJ Ecotype (21.15, 12.48, 8.14, 7.70, 6.34, 4.47, 2.89 when ranking 60.64, 45.20, 29.92, 29.15, 17.87, 9.86, 5.93 maximal yields).
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ژورنال
عنوان ژورنال: Agronomy
سال: 2023
ISSN: ['2156-3276', '0065-4663']
DOI: https://doi.org/10.3390/agronomy13041095