The results of 81 different crop management practices in spring barley grown in small-plot field trials on fertile soils in central Moravia were assessed during 2014–2016 with the aim to achieve the highest gross margin (GM – calculated as the difference between revenues and direct costs). GM was most affected by protein content in the grain below 12% corresponding to malting quality. Analyses identified greater determination level of non-linear relationships between stand structure elements and the content of nitrogen substances in the grain. This indicates that the probability of obtaining high quality malting barley is increased when a high level of sinks (number of grains/m2) corresponding to availability of sources, mainly water, is formed by optimal plant density (300–400/m2) and balanced combination of both structural elements of crop stand, i.e. – number of spikes per plant (2–4) and number of grains per spike (18–26). In case that the high level of sinks will be formed predominantly by one element, the risk of higher protein content in grain increases. This constitutes the requirement of early sowing and uniform, synchronized tillering and efficient use of nitrogen fertilizers.
Aufhammer W., Kubler E., Bury M. (1994): Stickstoffaufnahme und Stickstoffrückstände von Hauptfrucht-und Ausfallrapsbeständen. Journal of Agronomy and Crop Science, 172, 255-264 https://doi.org/10.1111/j.1439-037X.1994.tb00176.x
Benzian Blanche, Lane Peter (1979): Some relationships between grain yield and grain protein of wheat experiments in south-east england and comparisons with such relationships elsewhere. Journal of the Science of Food and Agriculture, 30, 59-70 https://doi.org/10.1002/jsfa.2740300111
Bingham Ian J., Blake Jonathan, Foulkes M. John, Spink John (2007): Is barley yield in the UK sink limited?. Field Crops Research, 101, 212-220 https://doi.org/10.1016/j.fcr.2006.11.004
Bonnett O.T. (1935): The development of the barley spike. Journal of Agricultural Research, 51: 451–457.
Boonchoo S., Fukai S., Hetherington Suzan E. (1998): Barley yield and grain protein concentration as affected by assimilate and nitrogen availability. Australian Journal of Agricultural Research, 49, 695- https://doi.org/10.1071/A97103
Bulman Patrick, Smith Donald L. (1993): Yield and Yield Component Response of Spring Barley to Fertilizer Nitrogen. Agronomy Journal, 85, 226- https://doi.org/10.2134/agronj1993.00021962008500020012x
Bulman Patrick, Smith Donald L. (1993): Grain Protein Response of Spring Barley to High Rates and Post-Anthesis Application of Fertilizer Nitrogen. Agronomy Journal, 85, 1109- https://doi.org/10.2134/agronj1993.00021962008500060003x
De Ruiter J. M. (1999): Yield and quality of malting barley (Hordeum vulgare
L. ‘Valetta') in response to irrigation and nitrogen fertilisation. New Zealand Journal of Crop and Horticultural Science, 27, 307-317 https://doi.org/10.1080/01140671.1999.9514110
Eagles HA, Bedggood AG, Panozzo JF, Martin PJ (1995): Cultivar and environmental effects on malting quality in barley. Australian Journal of Agricultural Research, 46, 831- https://doi.org/10.1071/AR9950831
Grashoff C., d'Antuono L.F. (1997): Effect of shading and nitrogen application on yield, grain size distribution and concentrations of nitrogen and water soluble carbohydrates in malting spring barley (Hordeum vulgare L.). European Journal of Agronomy, 6, 275-293 https://doi.org/10.1016/S1161-0301(97)00001-4
HUCL P., BAKER R. J. (1990): INTERPLANT AND INTRAPLANT COMPETITION EFFECTS ON MAIN STEM YIELD OF THREE DIVERSE-TILLERING SPRING WHEATS. Canadian Journal of Plant Science, 70, 1-7 https://doi.org/10.4141/cjps90-001
Klem K., Hřivna L., Ryant P., Míša P. (2011): Diagnostic Methods for Decision-Making Processes in Spring Barley Crop Management Practices (Czech). Kroměříž, Agrotest Fyto Ltd., 88.
Křen J., Klem K., Svobodová I., Míša P., Neudert L. (2014): Yield and grain quality of spring barley as affected by biomass formation at early growth stages. Plant, Soil and Environment, 60, 221-227 https://doi.org/10.17221/91/2014-PSE
Kůst F., Stehlíková J. (2016): Situation and Outlook Report – Cereals (Czech). Prague, Czech Ministry of Agriculture, 112.
Le Bail Marianne, Meynard Jean-Marc (2003): Yield and protein concentration of spring malting barley: the effects of cropping systems in the Paris Basin (France). Agronomie, 23, 13-27 https://doi.org/10.1051/agro:2002029
Lee S.H., Scott W.R., Love B.G. (1989): Sources of screenings in malting barley in relation to the pattern of tillering. Proceedings Annual Conference – Agronomy Society of New Zealand (New Zealand), 19: 43–54.
Magliano Patricio N., Prystupa Pablo, Gutiérrez-Boem Flavio H. (2014): Protein content of grains of different size fractions in malting barley. Journal of the Institute of Brewing, , n/a-n/a https://doi.org/10.1002/jib.161
NAYLOR R. E. L., STOKES D. T., MATTHEWS S. (1998): Biomass, shoot uniformity and yield of winter barley. The Journal of Agricultural Science, 131, 13-21 https://doi.org/10.1017/S0021859698005553
Paynter B., Hills A., Malik R., McLarty A. (2013): Sensitivity of barley varieties to crop management. Western Australia, Grain Research and Development Corporation, 1–4.
PORTER J. R. (1983): A MODULAR APPROACH TO ANALYSIS OF PLANT GROWTH. I. THEORY AND PRINCIPLES. New Phytologist, 94, 183-190 https://doi.org/10.1111/j.1469-8137.1983.tb04491.x
Sadras Victor O., Denison R. Ford (2009): Do plant parts compete for resources? An evolutionary viewpoint. New Phytologist, 183, 565-574 https://doi.org/10.1111/j.1469-8137.2009.02848.x
Savin R., Nicolas M.E. (1996): Effects of short periods of drought and high temperature on grain growth and starch accumulation of two malting barley cultivars. Australian Journal of Plant Physiology, 23: 201–210.
Schelling K., Born K., Weissteiner C., Kuhbauch W. (2003): Relationships between Yield and Quality Parameters of Malting Barley (Hordeum vulgare L.) and Phenological and Meteorological Data. Journal of Agronomy and Crop Science, 189, 113-122 https://doi.org/10.1046/j.1439-037X.2003.00011.x
Trinsoutrot I., Nicolardot B., Justes E., Recous S. (2000): Decomposition in the field of residues of oilseed rape grown at two levels of nitrogen fertilisation. Effects on the dynamics of soil mineral nitrogen between successive crops. Nutrient Cycling in Agroecosystems, 56: 125–137.https://doi.org/10.1023/A:1009838618133
Varvel G. E., Severson R. K. (1987): Evaluation of Cultivar and Nitrogen Management Options for Malting Barley1. Agronomy Journal, 79, 459- https://doi.org/10.2134/agronj1987.00021962007900030010x
White J (1979): The Plant as a Metapopulation. Annual Review of Ecology and Systematics, 10, 109-145 https://doi.org/10.1146/annurev.es.10.110179.000545