Grain yield of maize cultivated in the years 1997-2009 in monoculture and with annual tillage simplifications was assessed in energy and economy terms. Effects of no-tillage system and direct sowing (D) with cultivation with autumn deep (A) and shallow (B) ploughing and cultivation with spring pre-sowing ploughing (C) were compared. It was demonstrated that the 13-year maize grain yield in no-tillage system and direct sowing was lower by 10.4% than the yield obtained in conventional tillage system. The depth of autumn ploughing and its replacement with spring pre-sowing ploughing did not significantly affect the level of grain yield. Direct sowing compared to conventional tillage system reduced costs by on average 11.6%, and energy inputs only by 0.9%. The energy inputs of 100 kg grain production in direct sowing were higher by over 10% than the inputs of cultivations based on both autumn ploughing, irrespective of its depth, and of pre-sowing ploughing in the spring. The negative effect of direct sowing on grain yield was compensated by lower costs, which caused that the mean cost of 100 kg grain production for 13 years in direct sowing did not significantly differ from the costs of ploughing cultivations. Energy effectiveness of maize grain production in direct sowing was significantly lower than in the examined ploughing tillage cultivations. The soil tillage systems under study did not have a significant influence on economic effectiveness of maize cultivation evaluated with mean costs of production of 100 kg grain for 13 years.
Full text available in Polish in Adobe Acrobat format:https://www.npt.up-poznan.net/pub/art_8_27.pdf
| MLA | Szulc, Piotr, and Andrzej Dubas. "Ekonomiczna i energetyczna ocena uproszczonych sposobów uprawy roli pod kukurydzę." Nauka Przyr. Technol. 8.2 (2014): #27. |
| APA | Piotr Szulc, Andrzej Dubas (2014). Ekonomiczna i energetyczna ocena uproszczonych sposobów uprawy roli pod kukurydzę. Nauka Przyr. Technol. 8 (2), #27 |
| ISO 690 | SZULC, Piotr, DUBAS, Andrzej. Ekonomiczna i energetyczna ocena uproszczonych sposobów uprawy roli pod kukurydzę. Nauka Przyr. Technol., 2014, 8.2: #27. |
Piotr Szulc
Katedra Agronomii
Uniwersytet Przyrodniczy w Poznaniu
ul. Dojazd 11
60-632 Poznań
Poland
e-mail: pszulc@up.poznan.pl