Weed Control by Soil Tillage and Living Mulch

Vytauto Didžiojo universitetasŽemės ūkio akademij

Effect of variable rate seeding on winter wheat seedbed and germination parameters using soil apparent electrical conductivity

Due to the variability of soil characteristics in the field and the rising prices of high-quality seeds, farmers are increasingly interested in applying a system of precision variable rate seeding (VRS), which makes it easier to manage risks in crop production and allows to ensure the profitability of the farm. Most modern seed drills are equipped with a hydraulic or electric drive and a terminal in the tractor cabin, allowing farmers to apply VRS. The aim of this study was to determine the most appropriate seeding rate of winter wheat according to the measured apparent soil electrical conductivity (ECa) in the field, to investigate the uniformity of seed placement by layers in the soil and to evaluate the germination dynamics of winter wheat. Precision seeding was performed using a VRS map, generated from soil ECa data obtained by field surface scanning using the ECa device EM-38 MK2. Winter wheat seeding was implemented with a direct seed drill. The research was carried out by measuring the parameters of winter wheat seedbed and germinated plants, including the number and distribution of seeds in soil layers of different depths, germination, tillering. Field research was performed with 3 treatments and 4 repetitions (1 - uniform rate seeding; 2 - VRS; 3 - VRS + variable rate fertilisation (VRF)). The results of the research showed a direct relationship between the soil ECa and the depth of seed placement. Most seeds were inserted at medium depths (15-30 mm), except in the soil management zone, where ECa was highest (28.8 mS center dot m(-1)). In this area, most seeds (50.7%) were inserted shallowly up to 15 mm. The experimental results of seeding studies showed that using the VRS and VRS + VRF methods in all soil zones the germination of winter wheat was similar, while seeding at the uniform rate yielded significant differences between individual soil zones

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Išsp. str.: Seredžiuvienė V. Naujausios cukrinių runkelių auginimo technologijosVytauto Didžiojo universitetasŽemės ūkio akademij

Short-Term Impact of Multi-Cropping on Some Soil Physical Properties and Respiration

Growing as much crop biomass as possible in the shortest possible time is the target for most bio-energy producers. However, according to the requirements of the Green Deal, the consumption of fertilizers and crop protection products will have to be significantly reduced between 2023 and 2027. In order to meet all the necessary conditions for the production of biomass, a stationary field experiment was carried out at the Experimental Station of Vytautas Magnus University, Lithuania, in 2020–2021. Multi-cultivations of maize, hemp and faba bean were investigated. The aim of this study was to ascertain the impact of multi-cropping intensity on soil structural composition, stability, penetration resistance and gas concentration–respiration. As expected, multi-cropping stabilized the gas concentration and emission from the soil and decreased the proportion of micro-structures in the top soil layers. However, the stability of the soil decreased in all the experimental plots. Gas concentration and respiration mainly depended on soil structural composition, temperature and moisture content. The results of the experiment suggest performing investigations at a long-term scale because the intensive variation of meteorological conditions had a higher impact on the soil properties than the multi-cropping systems

Priešsėjinio purenimo įtaka dirvožemio agrofizikinėms savybėms ir cukrinių runkelių sudygimui

Vytauto Didžiojo universitetasŽemės ūkio akademij

Soil tillage optimization for sugar beet crop

Habilitacijos procedūrai teikiamų mokslinių publikacijų sąrašas: p. 22-25Vytauto Didžiojo universitetasŽemės ūkio akademij

The Influence of Minimal Presowing Soil Tillage Methods on Agrophysical Soil Properties, Sugar Beet Seeds Germination and Mass of Seedlings

Santr. angl., rusBibliogr.: p. 155-156 (10 pavad.)Vytauto Didžiojo universitetasŽemės ūkio akademij

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Išsp. str.: Jagaitė R. Žemės ūkio specialistų kalvėje - naujovės ūkininkaujantiemsVytauto Didžiojo universitetasŽemės ūkio akademij

Projektas „Lauko augalų technologinių parametrų optimizavimas tiksliojoje žemdirbystėje“ Nr. 1-PM-PV-13-2-008495-PR001 Įprastinės intensyviosios ir tiksliosios žemdibystės sistemų palyginimas auginant cukrinius runkelius

Vytauto Didžiojo universitetasŽemės ūkio akademij

The Infuence of Reduced Primary Soil Tillage on Soil Physical Properties, Weed Infestation, Sugar Beet Yield and Quality

Vytauto Didžiojo universitetasŽemės ūkio akademij