Efficiency of mechanised collection of soybean straw
2019
Kovačev, Igor | Mesar | Jukić, Željko | Dimitrijević, Aleksandra | Zlatanović, Ivan
The importance of soybean (Glycine max L.) arises from the quality of its grain (high protein and oil content), so it is one of the most important protein and oil crop in the world. As biomass of agricultural origin is highly acceptable energy source from the environmental point of view, soybean takes part in the production of biofuels, where grain and straw represent raw materials for liquid and solid biofuels. The production of biofuels from grain reduces the amount of grain for food and feed and in recent years attention has been focused to the development of biofuel from the straw. Straw is also an important source of organic matter and has important influence on biological, chemical and physical properties of the soil and should not be considered as waste. The aim of this paper was to determine the actual amounts of straw that can be collected after harvesting soybean using existing mechanization on family farm, round baler with pick-up. The field experiment was set at a location in Velika Barna with three soy varieties, Lucija, Galina and Ika, represented in the crop rotation by domestic farmers. The yield of straw was in the range of 1,824 kg/ha to 2,266 kg/ha and collection efficiency differed between soybean varieties, ranging from 33.3 % to 48.9 %. The amount of collected post-harvest residues depended on the cultivar, water content of the straw at the time of baling and the construction of combine and baler.
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