Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleYalnız künye2016Effects of organic solid cattle manure application on nutritive value of winter cereal forages
Yolcu, H.; Gullap, M.K.; Yildirim, M.; Lithourgidis, A.; Deveci, M.
Nutritive value of winter cereal forages is one of interested subjects of farmers for animal feeding. Field experiments were established in 2007–2008 and 2008–2009 growing seasons in northeast Turkey to investigate the effect of organic solid cattle manure application (0, 10 and 20 Mg ha−1 yr−1) on nutritive value of three annual cereals for forage. The winter cereal forages were: wheat (Triticum aestivum L.), oat (Avena sativa L.) and rye (Secela cereale L.). ADF (acid detergent fiber), NDF (neutral detergent fiber) CP (crude protein), nitrogen, phosphorus, potassium, sulfur, calcium, copper, iron, magnesium, manganese, sodium, zinc and boron (N, P, K, S, Ca, Cu, Fe, Mg, Mn, Na, Zn and B) concentrations were researched in this study. Wheat had the highest CP, N, Ca, Cu, Na and Zn concentration, whereas oat had the lowest ADF and NDF and the highest K, Fe and Mn concentrations. The greatest Mg and P concentrations were determined in rye. Organic solid cattle manure applications had no effect on N and CP contents, but it decreased ADF and NDF contents. However, in most cases it positively affected the P, B, Cu, Fe, Mg and Na concentrations, whereas it decreased K, Ca, Mn and Zn concentrations. The results showed that wheat and oat are more nutritive species than rye in terms of animal feeding and the organic solid cattle manure, in some cases increased the nutritive values of wheat, oat and rye under organic agriculture conditions.
- MakaleYalnız künye2015Effect of applications of organic solid cattle manure on Hungarian vetch and barley intercropping mixtures grown on soils of different depths
Yolcu, H.
Sloping fields on soils of shallow depth to tillage are commonly left uncultivated in many parts of the world. This study was conducted to compare the effects on morphological traits, dry-matter (DM) yield, legume ratio (LR), crude protein content (CP), crude protein yield (CP yield) and mineral concentrations (N, P, K, S, Ca, Cu, Fe, Mg, Mn, Na, B and Zn) of Hungarian vetch (Vicia pannonica Crantz.) and barley (Hordeum vulgare L.) grown in intercropping mixtures in response to three rates of organic solid cattle manure application (M0: 0, M1: 10, M2: 20 t ha-1). Experimentation was conducted on soils of two different soil depths [shallow (8-12 cm; low-medium erosion risk) and normal soil depth (18-22 cm; no erosion risk)] on a sloping field in the 2006-2007 and 2007-2008 growing seasons at Gumushane, Turkey. Herbage harvested on the shallow depth area had 22-73% less DM yield, 14-72% less CP yield, 6-9% greater CP content and generally higher minerals contents than herbage from the normal soil depth area. Cattle manure applications increased DM yield by about 23%, increased CP content and CP yield, and also increased the contents of most minerals in herbage of the intercropping mixtures, relative to the control, averaged over the two soil depths. It is suggested that, for areas with shallow soil depths that are prone to erosion, plant cover should be used for forage production, and that fertilization with solid cattle manure at 20 t ha-1 can support production of quality forage of acceptable DM yield.
- MakaleYalnız künye2015Primary growth parameters of three alfalfa cultivars adapted to highland climatic conditions
Seker, H.; Yolcu, H.; Acikgoz, E.
An irrigated field study was conducted to determine the relative importance and inter-relationships of growth parameters of three dormant alfalfa (Medicago sativa L.) cultivars grown in the highlands of Eastern Anatolia, Turkey, in 2000-2003. The fast-growing cultivar Savas had the greatest dry matter (DM) yield at the final sampling date with the greatest mean crop growth rate. In addition to a greater relative growth rate (RGR), this cultivar had more stem branching and greater leaf area in the canopy, which resulted in greater leaf area index (LAI) and greater leaf area duration. Despite the considerable increase in leaf area ratio (LAR: leaf area per unit shoot DM), the reduction in RGR of all cultivars over time was the result of a large decline in net assimilation rate (NAR) due to increasing specific leaf area (SLA). Intracultivar variation in the RGR of alfalfa is mainly determined by NAR and SLA, and both were significantly higher for Savas than the other two cultivars. The relative importance of NAR and SLA to RGR changed due to increasing self-shading as the LAI of the canopy increased, creating a trade-off between NAR and SLA.
- MakaleYalnız künye2010The effects of seeding patterns, nitrogen and phosphorus fertilizations on production and botanical composition in lucerne-smooth bromegrass mixtures
Yolcu, H.; Serin, Y.; Tan, M.
Lucerne and smooth bromegrass are commonly cultivated in irrigated and dry lands in intercropping systems in the world. The aim of this study was to determine the effects of seeding patterns (mixed, alternative and cross-seeding patterns), nitrogen (0, 60, and 120 kg N ha-1) and phosphorus fertilizer (0, 40, 80 and 120 kg P2O5 ha-1) rates on dry matter yields, botanical composition and crude protein yield of lucerne-smooth bromegrass mixture in an intercropping system. The experiment was established in 2001 and data were collected in dry matter yield and legume ratio for four years (2002-2005) and in crude protein yield for two years (2002-2003). The results showed that the highest dry matter yield was produced by a alternative seeding pattern. However, the highest legume ratio and crude protein yield was produced by mixtures sown in cross seeding pattern. Nitrogen fertilizer application decreased legume ratio but increased crude protein yield. Phosphorus fertilizer application had no effect on dry matter yield, legume ratio or crude protein yield of the lucerne-smooth bromegrass mixtures.