ECONOMICAL EVALUATION OF REDUCED INTENSITY TILLAGE SYSTEMS, STRAW AND GREEN MANURE COMBINATIONS

Since 1999, a long-term field experiment has been done at the Experimental Station of Vytautas Magnus University (former Aleksandras Stulginskis University) at 54º52′50 N latitude and 23º49′41 E longitude. The soil of the experiment site is Epieutric Endocalcaric Endogleyic Planosol (Endoclayic, Aric, Drainic, Humic, Episiltic) according to WRB (2014). The objective of our investigations was to assess the long-term impact of reduced intensity tillage systems, straw and green manure combinations on productivity and economical evaluation. A short crop rotation was introduced: winter wheat, spring barley, spring rape. The results were obtained in 2000-2017. Sustainable agroecosystems are able to maintain their condition, productivity and biodiversity, as well as their integrity over time and in the context of human activity and use. The sustainability of agroecosystems is inseparable from the stability of their productivity. In order to illustrate this, we estimated crop productivity differences % from the year 2000 to 2017. In terms of crop productivity, all the tested long-term complex measures of different intensities were similar, both when comparing with average productivity that year and when estimating cumulative differences com-pared with deep ploughing. &nbsp

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Išsp. str. : Čaplikas A. Mokslininkų patarimai žemdirbiams neįkainojamiVytauto Didžiojo universitetasŽemės ūkio akademij

Rudeninio žemės dirbimo ir tarpinių pasėlių vaidmuo javų sėjomainoje = Effect of Soil Tillage and Catch Crops in the Crop Rotation of Cereals : agrar. m. dr. disert. tezės : agrar. m. sritis, agronomijos kryptis

Santr. angl., rusAut. darbų sąrašas: p. 16-17 (13 pavad.)Vytauto Didžiojo universitetasŽemės ūkio akademij

The Effect of Monoculture, Crop Rotation Combinations, and Continuous Bare Fallow on Soil CO2 Emissions, Earthworms, and Productivity of Winter Rye after a 50-Year Period

One of the main goals of the 21st century’s developing society is to produce the necessary amount of food while protecting the environment. Globally, particularly in Lithuania and other northern regions with similar climatic and soil conditions, there is a lack of data on the long-term effects of crop rotation under the current conditions of intensive farming and climate change. It has long been recognized that monocultures cause soil degradation compared to crop rotation. Research hypothesis: the long-term implementation of crop rotation makes a positive influence on the soil environment. The aim of our investigation was to compare the effects of a 50-year-long application of different crop rotations and monocultures on soil CO2 emissions, earthworms, and productivity of winter rye. Long-term stationary field experiments were established in 1966 at Vytautas Magnus University Experimental Station (54°53′ N, 23°50′ E). The study was conducted using intensive field rotation with row crops, green manure crop rotations, three-course rotation, and rye monoculture. Pre-crop had the largest impact on soil CO2 emissions, and more intensive soil CO2 emissions occurred at the beginning of winter rye growing season. Rye appeared not to be demanding in terms of pre-crops. However, its productivity decreased when grown in monoculture, and the optimal mineral fertilization remained lower than with crop rotation, but productivity remained stable

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Vytauto Didžiojo universitetasŽemės ūkio akademij

Agroekosistemų ir dirvožemio mokslų institutas

Vytauto Didžiojo universitetasŽemės ūkio akademij

Palyginamieji tyrimai išaiškina skirtumus

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Dirvožemio kokybė ir apsauga : metodinė medžiaga

Projektas "Žemės ūkio specialistų technologinių ir vadybinių kompetencijų tobulinimas"Vytauto Didžiojo universitetasŽemės ūkio akademij

[Pasisakymas]

Išsp. str.: Ragožis P. AB " Lytagra" skatina žemdirbius dirbti naujoviškaiVytauto Didžiojo universitetasŽemės ūkio akademij

Atrasti naudą skatins išmokomis : [pokalbis su Aleksandro Stulginskio universiteto Agroekosistemų ir dirvožemio mokslų instituto (ASU ADMI) direktoriumi prof. V. Bogužu] / kalbėjosi M. Kazlauskaitė

Vytauto Didžiojo universitetasŽemės ūkio akademij