THE EFFECT OF DIFFERENT NITROGEN DOSES ON YIELD AND SILAGE QUALITY OF ANNUAL RYEGRASS (Lolium multiflorum var. westerwoldicum) CULTIVARS
Project no. 21529 · Status: Kapanmış (Yayın bekleniyor) · 2020
Summary
<p><strong>THE EFFECT OF DIFFERENT NITROGEN DOSES ON YIELD AND SILAGE QUALITY OF ANNUAL RYEGRASS (<em>Lolium multiflorum </em>var. <em>westerwoldicum</em>) CULTIVARS</strong></p><p>This study was conducted in the research fields of Field Crops Department of Agriculture Faculty, Ege University, Bornova/Izmir during 2019-2021 years. In this study, annual ryegrass cultivars (Elif, Big Boss, Baquend and Medoacus) were tested for some herbage and silage characteristics under different nitrogen doses (0, 7.5, 15, 22.5 and 30 kg/da). For this purpose, number of days of heading, plant height, stem thickness, lodging status, herbage yield, hay yield, dry matter ratio, ash ratio were tested as forage yield characteristics in addition to silage dry matter ratio, silage pH, silage ash ratio, silage crude protein ratio, silage NDF (neutral detergent fiber) ratio, silage ADF (acid detergent fiber) ratio, silage relative feed value, lactic acid ratio, acetic acid ratio and butyric acid ratio as silage quality characteristics.</p><p>According to the results obtained, it was found that there are differences between the cultivars used and nitrogen dose applications in terms of earliness and yield and silage quality criteria. When the results are evaluated in general, it was concluded that the cultivars Elif or Medoacus can be grown with the application of a nitrogen dose of 150 kg per hectare in annual ryegrass cultivation for silage purposes in Aegean coastal region ecological conditions in terms of yield, environmental pollution and economy.</p><p>Keywords: Annual ryegrass, <em>Lolium multiflorum</em>, cultivar, nitrogen dose, yield, silage quality</p>