Effect of different ethephon doses on grain yield and yield components of in barley (Hordeum vulgare L.)

This study was carried out under supplementary irrigated conditions in the Harran Plain in 2008-2009 and 2009-2010 growing seasons. The study aimed to assess the effects of various ethephon doses on durum wheat and barley cultivars. Nine ethephon dosages (0, 240 g/ha, 360 g/ha, 480 g/ha, 600 g/ha, 720 g/ha, 840 g/ha, 960 g/ha, 1080 g/ha) were applied in the study. The results of the combined analysis of two years indicated that the highest grain yield was recorded for Sur-93 cultivar with 4365.63 kg/ha in 600 g/ha ethephon application, while the lowest grain yield of barley was obtained from land race black barley with 1978.00 kg/ha (in control application). The result revealed that ethephon had positive effect on to grain yield. There was not any statistical significants between 960 g/ha and 1080 g/ha ethephone doses in terms of grain yields for land race black barley cultivar. When the years and barley cultivars is evaluated together, the highest grain yield is obtained with 960 g/ha dose of ethephon. Results showed that ethephon application to barley shortened plant height and increased 37-46% of barley yield, and the effects of ethephone varied were connected to cultivar specific. In addition Sur-93 600 g/ha, and a land race black barley cultivar 960 g/ha could be recommended.

___

  • Akcura M (2001). Effect of different doses of ethephon, chlormepiquat chloride and ethephon + chlormepiquat chloride on yield and yield components in some bread wheat (triticum aestivum l.) genotypes in Kahramanmaras conditions. University of Sütcü Imam, Master’s thesis, Kahramanmaras- Turkey.
  • Akkaya A (1994). Wheat breeding course text. Kahramanmaras Sütcü Imam University Faculty of Agriculture Publications, p. 225, Kahramanmaras.
  • Anonim (2020). Agricultural Products Development Markets. Barley. Januray No: BU-01 https:// arastirma.tarimorman.gov.tr/tepge/Belgeler
  • Aral M (2001). The effect of ethephon dose applied to durum wheat (Triticum durum L., etc.) on yield and yield components. University of Ankara, Master thesis, Ankara-Turkey.
  • Auškalienė O (2005). The influence of modus mixtures with other plant growth regulators on the grain yield and productivity of winter wheat. ŽEmdirbystė, Mokslodarbai. 90: 48-60.
  • Bridger GM, Klinck HR, Smith DL (1995). Timing and rate of ethephon application to two-row and six-row spring barley. Agronomy Journal. 87(6): 1198-1206.
  • Dziamba S (1986). The effect of flordimex t on yields of triticale, rye and wheat as related to the level of mineral fertilization. Acta-Agraria-et-Silvestria. 25: 141-156.
  • Ege H (1991). Research on the effects of plant growth regulators (Ethephon, CCC, RSW 0411) on some agronomic morphological and anatomical features in barley varieties. Ege University Institute of Science, thesis, Izmir-Turkey.
  • Haskins B, Mcmullen G (2007). Crop canopy management through nitrogen and plant growth regulators. IREC Farmers' Newsletter, p. 4, Australia.
  • Havazvidi EK (1992). The effect of growth regulators on lodging, development and grain yield of tall spring wheats in Zimbabwe. Seventh regional wheat workshop for eastern, central and southern Africa. P. 369-375. , Cimmyt.
  • Karakus C, Koker R (2007). Use of plant growth regulators (bgd) in agriculture and hormone risk, University Students 2. Environmental Problems Congress Congress Book, p. 163-175, Istanbul.
  • Lloveras J, Gomez-Ibarlucea C, Carreiras W, Bueno J, Casal L (1990). The effect of growth regulaiwheat from galicia (n.,w.,spain). Investigacion-Agraria-Produccion-Y-Proteccion-Vegatales. 5: 89-101.
  • Lundsgaard J (1984). Terpal CA new growth regulator for straw shortening in cereals. 1.-Danske-Plantavaernskonference-Ukrudt, Ucrudut: 153-166.
  • Ma BL, Smith DL (1992). Post-anthesis ethephon effects on yield of spring barley. American Society of Agronomy. 84: 370-374.
  • Pavlista AD, Hergert GW, Baltensperger DD, Knox S (2010). Reducing height and lodging of winter wheat. Crop management, 9(1): 1-7.
  • Penckowski LH, Zagonel J, Fernandes CE (2009). Nitrogen ve Growth Reducer In High Yield Wheat. Acta Scientiarum: Agronomy 31(3): 473-479.
  • Rademacher W (2009). Control of lodging in intense European cereal production. Proceedings of the 36th Annual Meeting of the Plant Growth Regulation Society of America, 2-6 August, p. 61-69. USA.
  • Rajala A, Peltonen-Saınıo P (2001). Plant growth regulator effects on spring cereal root and shoot growth. Agronomy Journal. 93: 936-943.
  • Rajala A, Peltonen-Sainio P, Onnela M, Jackson M (2002). Effects of applying stem-shortening plant growth regulators to leaves on root elongation by seedlings of wheat, oat and barley: mediation by ethylene. Plant Growth Regulation. 38: 51-59.
  • Ramburan S, Greenfıeld PL (2007). Use of ethephon and chlormequat chloride to manage plant height and lodging of ırrigated barley (cv. puma) when high rates of on-fertiliser are applied. South African Journal of Plant and Soil. 24(4): 181-187.
  • Rawlins SL (1976). Measurement of water content and the state of water in soils. p.1-55. In: Water Deficits And Plant Growth. Academic Pres, NY, 4: 1-55.
  • Stobbe EH, Moes J, Bahry RW, Visser R, Iverson A (1992). Environment, cultivar, and ethephon rate ınteractions in barley. Argonomy. 84: 789-794.
  • Sutulova V.I, Egorov I.V (1991). Cultivar specificityin response of spring wheat to treatment with growth regulator. 2: 119-126.
  • Szirtes V, Szirtes J, Varga S, Balassa J, Mate I (1986). Hormone centered theory and practice of the application of foliar fertilizers in winter wheat and other cereals. Developments in plant and soil sciences. 22: 346-377.
  • Tripathi SC, Sayre KD, Kaul JN (2003) Fibre analysis of wheat genotypes and its association with lodging: effects of nitrogen levels and ethephon. Cereal Research Communications. 31 (3-4): 429-436.
  • Webster JR, Jackson LF (1993). Management practices to reduce lodging and maximize grain yield and protein content of fall-sown irrigated hard red spring wheat. Field Crops Research. 33(3): 249-259.
  • Wiersma DW, Oplinger E S, Guy SO (1986). Environment and cultivar effects on winter wheat response to ethephon plant growth regulator. Agronomy Journal. 78: 761-764.
  • Wiersma JJ, Dai J, Durgan BR (2011). Optimum timing and rate of trinexapac-ethyl to reduce lodging in spring wheat. Agronomy Journal. 103(3): 864-870.