The effect of in-row application of biochar during sowing on the productivity of spring barley under organic cultivation technology in the Forest-Steppe of Ukraine
Abstract
The purpose of the article is to determine the effect ofsowing in-row biochar at a dose of 100 kg ha-1 on someindicators of productivity of spring barley under organicfarming conditions in the Forest-Steppe of Ukraine.Methods. A three-year field experiment was conducted inthe Kyiv Specialized Branch of the Ukrainian Institute ofPlant Variety Expertise (Ukraine, Kyiv region, Bila Tserkvadistrict). The soil of the experimental plot is typical low-humuschernozem. Spring barley (cv Komandor, KWSChrissie and Absoliut) was grown using organic technology.The precursor for spring barley in the experiment wasmeadow clover (Trifolium pratense), which was mowedtwice during its growing season and plowed into the soil to a depth of 20–22 cm. Plant density was counted twice:at full emergence and during laboratory analysis of a testsheaf taken from the same sites on the eve of harvesting.Plant survival to harvest (%), number of productive stemsper (pcs. м-2) before harvesting, productive bushiness,number of grains per ear (pcs.), weight of 1000 grains(g), biological yield (t ha-1) were determined by laboratoryanalysis of sheaf samples. Statistical processing ofthe research results was carried out by the method ofvariance analysis using MS Excel software (Redmond,Washington, USA). Results. In-row application of biocharduring sowing at a dose of 100 kg/ha had a positiveeffect on the growth of plant survival rates until harvest,productive bushiness and the number of grains in springbarley ear, increasing them by 1–4 %. Conclusions. Onaverage, over the three years of the study, the biologicalyield of spring barley under the conditions of using biocharat the specified dose increased by 2–5 %. A promisingapproach to increasing the efficiency of using biochar inorganic technology for growing spring barley may be itscombination with complex mineral fertilizers permitted fororganic farming.
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