Aplinką tausojančio žemės dirbimo poveikis kukurūzų agrofitocenozei

• Main Author: Pališkytė, Rita
• Other Authors: Romaneckas, Kęstutis
• Format: Other/Unknown Material
• Language: Lithuanian
• Published: 2013
• Subjects: Maize; Soil tillage; Biometric parameters; Yields; Agronomija / Agronomy (A001); Subarctic
• Online Access: https://hdl.handle.net/20.500.12259/86172

The long-term stationary field experiment was carried out at the Experimental Station of the Aleksandras Stulginskis University (ASU, 54º52′ N, 23º49′ E) in 2012. Soil of field experiment was silty loam Planosol. Climate of experimental site is subarctic, transitional maritime-continental. Average annual temperature is 6.2° C. The aim of the experiment was to establish the influence of reduced primary (in autumn) soil tillage on maize productivity. The plots of experiments were: 1. conventionally (22–25 cm) ploughed by mouldboard plough; 2. shallowly (12–15 cm) ploughed by mouldboard plough; 3. deeply (23–25 cm) tilled by chisel cultivator; 4. shallowly (12–15 cm) tilled by disc harrow; 5. no-till. The results of experiment showed that deep chiseling had stable negative influence on biometric parameters of maize canopy, no-till – mostly positive one. In 2012 reduced soil tillage mostly had significantly negative effect on yields of maize biomass and grain, however no-till insignificantly decreased dry biomass of maize canopy and mass of 1000 kernels. Such results were influenced by the cumulative effect of three years too humid vegetation conditions and surplus water on the soil surface. Variation of maize crop density from 66,8 to 70,0 thousand plants per ha had insignificant effect on maize productivity parameters Vytauto Didžiojo universitetas Žemės ūkio akademija