Agricultural and Food Science 2021-04-01T11:18:25+03:00 Tuula Puhakainen Open Journal Systems <p>Agricultural and Food Science (AFSci) publishes original research reports on agriculture and food research in relation to primary production in boreal agriculture. Acceptable papers must be of international interest and have a northern dimension. We especially welcome papers related to agriculture in Boreal and Baltic Sea Region.</p> Acknowledgements 2021-04-01T11:16:38+03:00 Tuula Puhakainen <p>Acknowledgements</p> 2021-03-31T00:00:00+03:00 Copyright (c) 2021 Tuula Puhakainen Comprehensive model for predicting the fuel consumption in various harvesting methods of grass silage 2021-04-01T11:17:31+03:00 Tapani Jokiniemi Hannu Mikkola Mikko Hakojärvi Laura Alakukku <p>Fuel consumption of various forage harvesting methods was assessed with a theoretical calculation model, which was validated with field measurements. The examined harvesting methods were tractor-powered forage harvester (TPFH), self-propelled forage harvester (SPFH), self-loading forage wagon (SLFW), and combined baling and wrapping (CBW). The results from the field measurements indicated that the model was working either well or satisfactorily with the examined methods, apart from the CBW method, which would require redefining the model coefficients. Model sensitivity analysis indicated that variables such as yield level, working width, and transportation distance have a significant effect on fuel consumption. When the working width was increased from 3 m to 9 m, the fuel consumption of the examined methods decreased ca. 54–61%. Increasing the working width by windrowing was found recommended for all examined methods. In all, the most energy-efficient method was SLFW, but it was also most sensitive to transportation distance. With a transportation distance of 10 km, the fuel consumption of the SLFW method was already 9–11 % higher compared to that of TPFH and SPFH methods. The strong effect of these variables may cause a wide variation in the fuel consumption of the examined methods, but the model can be used to standardize this effect. The results from this study can thus be used for approximate estimations of average fuel consumption of the examined forage harvesting methods.</p> 2021-03-23T00:00:00+02:00 Copyright (c) 2021 T. Jokiniemi et al. Comparing spring triticale varieties to barley and wheat varieties when harvested as whole crop 2021-04-01T11:18:25+03:00 Katariina Manni Timo Lötjönen Arto Huuskonen <p>Two plot experiments in two consecutive years were conducted to compare spring triticale varieties to spring barley and spring wheat varieties to produce whole crop cereals for ruminants. In the first year, triticale varieties Nagano and Nilex, barley varieties Kaarle and Trekker, and the wheat variety Helmi were studied. In the second year, the triticale varieties Bikini and Somtri and the barley variety Armas were also used. The crops were harvested at the early dough stage of ripening. A treatment with reduced fertilizer and seed rates was included to study their effects on the development of the undersown ley, but such effects could not be demonstrated. The triticale varieties except for Bikini produced high dry matter yields. The highest ear:stem ratio and pepsin-cellulase solubility in the ear were found in the barley varieties Armas and Kaarle, but the digestibility of the whole crop was not improved because of low pepsin-cellulase solubility of the stems or leaves. All the studied varieties were suitable for whole crop production. The production costs of the different types of whole crop silage were fairly similar.</p> 2021-02-19T00:00:00+02:00 Copyright (c) 2021 K. Manni et al. Response of winter oilseed rape to differentiated foliar fertilisation 2021-04-01T11:17:58+03:00 Piotr Żarczyński Stanisław Sienkiewicz Jadwiga Wierzbowska Sławomir Józef Krzebietke <p>This article presents results of a three-year field experiment laid out on medium textured soil, in north-eastern Poland. Winter oilseed rape was sprayed with foliar fertilisers AgravitaActive 48 (AA48) - NPK 8:8.7:16.6 and AgravitaActive70 (AA70) - NPK 10:22.7:6.6 at different phases of the crop’s vegetative growth (BBCH 14, BBCH 35). The impact of the fertilisers on the yield of seeds, straw, total protein, crude fat, and on the content of macro- and micronutrients in aerial parts (BBCH 20 and 89) and roots (BBCH 20) of oilseed rape was evaluated. Foliar nutrition of oilseed rape plants with AA48 and AA70 significantly increased the seed yield of oilseed rape. The best yield-stimulating effect was achieved after the application of AA48 in autumn. Fertilisation of oilseed rape in that season of the year caused an increase in seed yield by 430 kg ha<sup>-1</sup>. Each fertiliser contributed to a rise in the yield of protein and yield of crude fat but had no effect on the content of magnesium, copper, and zinc in seeds.</p> 2021-03-16T00:00:00+02:00 Copyright (c) 2021 P. Żarczyński et al. Co-occurrence of latent Dickeya and Pectobacterium species in potato seed tuber samples from northern Finland 2021-04-01T11:17:05+03:00 Yeshitila Degefu <p>Recent methodological developments have uncovered the etiological diversity of the potato blackleg and soft rot Pectobacteriaceae. At least five species in the genera <em>Dickeya</em> and <em>Pectobacterium</em> have been confirmed to cause blackleg on potatoes in Finland. The bacteria are seed borne and remain latent in the tuber until conditions favourable for growth, multiplication and infection prevail. Tubers could be infected by one or more of these species. This short communication is based on the results of molecular detection data collected for more than 14 years from potato seed lots produced in Finland. Diagnostic PCR assay specific to <em>Dickeya</em> <em>solani</em>, <em>Pectobacterium</em> <em>atrosepticum</em>, <em>Pectobacterium</em> <em>carotovorum</em>, <em>P</em>. <em>brasiliense</em> and <em>P</em>. <em>parmentieri</em> revealed that potatoes are infected by one or more of these species; it also revealed that single species infection is more common than multiple colonization. An event of simultaneous occurrences of different strains from the <em>Pectobacterium</em> species appears to be more frequent than that observed between <em>Dickeya</em> and <em>Pectobacterium</em> species. The absence of co-occurrence of <em>Dickeya</em> <em>solani</em> and <em>Pectobacterium</em> <em>atrosepticum</em> is intriguing.</p> 2021-03-24T00:00:00+02:00 Copyright (c) 2021 Y. Degefu