Influence of Farming System, Nitrogen Rates and Meteorological Conditions on Naked Oat in Latvia

Abstract

SUMMARYResearch and development related to the naked oat is now becoming more wide-spread as the opportunity for its different uses is understood also in Latvia. It has been recognized as a more valuable product in the food industry because both the interest of consumers in their health and the promotion of food products are increasing. Naked oat kernels contain high levels of β-glucans and unsaturated fatty acids. The aim of the study was to evaluate the yield and oat grain quality of naked oat breeding lines from Latvian oat breeding program. The following parameters were assessed -grain yield, 1000 grain weight, test weight, crude protein fat and β-glucan. The research assessed the variability of these parameters in organic and conventional farming system (at three different mineral fertilizer rates: N80, N120, N160). The field experiments were carried out at the State Stende Cereal Breeding Institute during three years (2011)(2012)(2013). Results showed that the higher N fertilizer rate positively affects the amount of the crude protein and β-glucan in naked oat grains. The farming system (η 2 =42.9 %) and testing year/meteorological condition of years (η 2 =35.9 %) had a greater impact on naked oat yield. Comparing only N80, N120 and N160 variants in conventional system it was observed that during the three year period the meteorological conditions had the greatest impact on the yield of naked oat (η 2 =86.6 %). Naked oat line 'S-156' gave the highest grain yield in conventional and organic farming systems and formed significantly higher crude protein, fat and β-glucan amounts in the grain.

Protein, Amino Acid and Gluten Content in Oat (Avena Sativa L.) Grown in Latvia

“…The rising attention globally given to the use of oats and oat compounds and their beneficial effect in nutrition has increased interest in oat production in Latvia. Many studies on husked and hulless oat breeding and their quality parameters have been carried out in Latvia in recent years (Zute et al, 2011;Nakurte et al, 2013;Bleidere et al, 2014;Zute et al, 2015).…”

Regressão linear múltipla envolvendo variáveis biológicas e ambientais na simulação de indicadores da composição química de grãos de aveia

“…Além disto, as variações meteorológicas, influenciam no conteúdo de proteína, fibra, amido e óleo da cariopse de aveia. [3,14].…”

Applicability of the 35–2 Fractional Factorial Design in Determining the Effects of Cultivation Factors on Hulless Oat

“…Environment and genetics largely determine the yield potential of hulless oat (Pettersson et al, 1996; Peterson et al, 2005; Martinez et al, 2010; Zute et al, 2015), but the genetic traits of hulless oat cultivars are not always fully utilized due to inadequate intensity of cultivation measures and variable weather conditions. Seeding date, seeding rate, N and Mg fertilization, and disease control are the key yield‐forming components in oat.…”