Effects of different sowing and harvesting times on yield and quality of forage turnip (Brassica rapa L.) grown as a second crop

This research was conducted to determine the effects of different sowing and harvesting times on yield and quality of forage turnip (Brassica rapa L.) grown as a second crop in Isparta in 2010 and 2011 growing seasons. The field experiment was established in randomized complete block design with three replications. Three different sowing times (20 June, 5 July, 20 July) and three different harvesting times (1 October, 15 October, 30 October) were applied in this research. Root length, root diameter, root yield, leaf yield, dry matter yields, crude protein ratios, ADF and NDF ratios of root and leaf were investigated. According to the results, the effects of sowing and harvesting times were statistically significant at all components. The crude protein ratios increased with late sowing while root length, root diameter, root yield, leaf yield, dry matter yields, ADF and NDF ratios of root and leaf decreased. The root length, root diameter, root yield, leaf yield, dry matter yields, ADF and NDF ratios of root and leaf increased with late harvest while the crude protein ratios decreased.

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Albayrak, S., N. Camas, 2006. Performances of forage turnip (Brassica rapa L.) cultivars under different nitrogen treatments. Journal of Faculty of Agriculture, Ondokuz Mayis University, 21(1):44-48.
Albayrak, S., O. Yuksel. 2010.Effects of Nitrogen Fertilization and Harvest Time on Root Yield and Quality of Fodder Beet (Beta vulgaris var. crassa mansf.). Turkish Journal of Field Crops, 2010, 15(1): 59-64
Anonymous, 2006. Acid detergent and neutral detergent fiber using ANKOM’s fiber analyzer F200. Ankom Technology Corporation, Fairport, NY.
Bokhari, U. G., F.P. Horn, 1982. Brassica and beet crops as potential livestock feedstuffs. Oklahoma State Univ. Anim. Sci. Res. Rep. pp. 112-116.
Guillard, K., D.W. Allinson, 1988. Yield and nutrient content of summer and fall-grown forage Brassica crops. Can.J.Plant.Sci.,68:721-731.
Jacobs J.L., G.N. Ward, A.M. Mcdowell, G.A. Kearney, 2001. A survey on the effect of establishment techniques, crop management, moisture availability and soil type on turnip dry matter yields and nutritive characteristics in Western Victoria. Australian Journal of Experimental Agriculture, 41, 743–751.
Jung, G.A., R.A. Byers, M.T. Panciera, J.A. Shaffer, 1986. Forage dry matter accumulation and quality of turnip, swede, rape, Chinese cabbage hybrids and kale in the eastern USA, Agron. J. 78:245-253.
Jung, G., W. L. McClellan, R. A. Byers, R. E. Kocher, L. D. Hoffman, H. J. Donley, 1983. Conservation tillage for forage Brassicas. J. Soil Water Conserve 38 (3): 227-230.
Jung, G.A., J.A. Shaffer, 1993: Planting Date and Seeding Rate Effects on Morphological Development and Yield of Turnip. Crop Sci., 33, 1329-1334.
Kacar, B., A. Inal, 2008. Bitki Analizleri. Nobel Yayınları. No:1241, Ankara, 892pp.
Keogh B., T. McGrath, J. Grant, 2012. The effect of sowing date and nitrogen on the dry-matter yield and nitrogen content of forage rape (Brassica napus L.) and stubble turnips (Brassica rapa L.) in Ireland. Grass and Forage Science.67(1):2-12.
Martin, R.C., H.D. Voldeng and D.L. Smith, 1990. Intercropping soybean for silage in a cool temperate region: Yield, protein and economic effects. Field Crops Research 23:295-310
Mulayim, M., R. Acar, Y.Z. Atalay, 1996. Konya Şartlarında İkinci Ürün Olarak Ekilen Yem Şalgamında Sıra Aralığı ve Söküm Zamanlarının Yumru Verimi Üzerine Etkisi, Selçuk Üniv. Ziraat Fak. Dergisi 10(13):141-151.
Nichol, W., C. Westwood, A. Dumbleton, J. Amyes, 2003. Brassica wintering for dairy cows: overcoming the challenges.Proceedings of the South Island Dairy Event (SIDE), Canterbury, New Zealand, 2003. pp. 154–172
Parlak Ozaslan, A., C.S. Sevimay, 2005. Effect of seeding after barley and wheat harvest on yield components of forage turnip (Brassica rapa L.) cultivars. Journal of Agricultural Science, 11(3): 299-302.
Pelletier, G. E., E. Donefer and J.P.F. Darisse, 1976. Effects of dates of seeding and levels of N fertilization on yields, chemical composition an in vitro digestibility of forage kale. Can. J. Plant Sci. 56:63-70.
Rao, S. C., F.P. Horn, 1986. Planting season and harvest date effects on dry matter production and nutritional value for Brassica ssp. in the southern great plain. Agronomy Journal 78:327-333.
Rauzi F, L.I. Painter, A.K. Dobrenze, 1969. Mineral and protein content of blue grama and western wheatgrass. Journal of Range Management 22: 47–49.
Rowell, D.R., 1996. Soil science: methods and applications. Harlow, Longman.
SAS, 1998. SAS/STAT users’ guide release 7.0. Cary, NC, USA, SAS Institute Inc.
Smart, A., P. Jeranyama, V. Owens, 2004. The Use of turnips for extending the grazing season. Cooperative Extension Service. ExEx 2043.
Turk, M., S. Albayrak, C. Balabanli, O. Yuksel, 2009. Effects of fertilization on root and leaf yields and quality of forage turnip (Brassica rapa L.). Journal of Food, Agriculture & Environment Vol.7 (3&4) : 339-342 .
Uzun, A., 1990. Investigations on yield and quality of turnip grown as a second crop under Bursa conditions. Master thesis, Department of Field Crops, Uludağ University.
Wilson, D.R., J.B. Reid, R.F. Zyskowski, S. Maley, A.J. Pearson, S.D. Armstrong, W.D. Catto and A.D. Stafford, 2006. Forecasting fertiliser requirements of forage brassica crops. Proceedings of the New Zealand Grassland Association, 68, 199–20.