Productivity of modern Bulgarian and Polish winter triticale varieties in three locations in Bulgaria

A. Muhova¹*, S. Stefanova-Dobreva¹, H. Stoyanov², Z. Ur³ and B. Bonchev³

¹Institute of Field Crops, 2 G. Dimitrov Blvd., BG6200 Chirpan, Bulgaria
²Dobrudzha Agricultural Institute, 9002, BG9521 General Toshevo, Bulgaria
³Institute of Plant Genetic Resources, 2 Druzhba Blvd., BG4122 Sadovo, Bulgaria
*Correspondence: muhova.angelina@gmail.com

Abstract:

A comparative four-year field trial of triticale productivity was conducted in two climatic regions of Bulgaria. The work was carried out on the experimental fields of the scientific institutes in Sadovo, Chirpan and General Toshevo at the Agricultural Academy (Bulgaria). Ten triticale varieties – Bulgarian and Polish selections, were studied. Sowing for each variety was carried out on an area of 10 m² in 3 repetitions, after a predecessor of sunflower without applying fertilizers. Environmental conditions were assessed using the De Marton Index. Grain yield, the influence of the variety, the conditions of the year and the location were analysed, and the highest-yielding varieties for each agrometeorological region were identified. The significant differences in the mean values were calculated using the least significant difference (LSD) procedure and the significant F-test. The results showed that the effects of the variety, location and the total effect of the variety and location are similar and medium in size. The Avocado (5,357.0 kg ha^-1), Doni-52 (5,357.0 kg ha^-1) and Casino (9,231.0 kg ha^-1) varieties are underlined in terms of grain yield in the three regions, Chirpan, Sadovo and General Toshevo, respectively. The highest average yield was achieved in General Toshevo (7,452.0 kg ha^-1), followed by Sadovo (5,494.0 kg ha^-1) and Chirpan (4,918.0 kg ha^-1). 2021 was the most successful in terms of production, which is associated with semi-humid conditions in General Toshevo, Chirpan and Sadovo, according to the De Marton Index.

Key words:

agrometeorological contitions, De Marton Index, grain yields

Comparison of yields and qualitative characters of spring barley grown after three preceding crops in an organic farming system in the years 2003–2008

M. Klimeková and Z. Lehocká

Research Centre for Plant Production – Research Institute of Plant Production,Bratislavská cesta 122, 921 68 Piešťany, Slovak Republic; e-mail: klimekova@vurv.sk

Abstract:

The aim of the study was to evaluate yields and selected qualitative parameters of spring barley cultivated after three preceding crops (sugar beet, winter wheat, maize for grain) in the years 2003–2008. farm yard manure was added to the preceding crops at a dosage of 40 t ha-1. A long term stationary field experiment was established on loamy luvi-haplic chernozem in south-western Slovakia. Statistically higher yields were recorded after sugar beet (5.38 t ha-1) than either maize for grain (4.77 t ha-1) or winter wheat (3.54 t ha-1). TGW was statistically significantly higher after maize for grain (43.82 g) compared with winter wheat (42.46 g) and sugar beet (40.93 g). The highest protein content (** P  0.01) was found in the barley crop after sugar beet (12.64%), followed by winter wheat (11.02%) and maize for grain (10.56%). Kolbach’s numbers were statistically higher after winter wheat (37.30) than either sugar beet (35.88) or maize for grain (36.12). The extract and starch content was not statistically influenced by the preceding crop.

Key words: