Energy outlay in onion production in private holdings
Department of Horticultural Economy
Faculty of Horticulture, Agricultural University
Al. 29 Listopada 54, 31-425 Kraków, Poland
Within the years 1986 and 1987, in private holdings located in Luborzyca
and Proszowice communes, the research aimed at determing the energy outlay
in onion cultivation was carried out.
The energy consumption was determined with the cummulative method. The global energy outlay was
calculated. In a 1 hectare area a value of 83 737 MJ was observed in 1986,
and in 1987 increased to 85 688 MJ. To produce 1 kg of onion, in those
holdings, 5 573 MJ of energy was consumed. In the structure of the energy
outlay, the main carrier was means of investment - 44.3 per cent, while
the lowest one was hand-labor - 8.4 per cent.
To determine the degree of correlation of the level of energy outlay and the harvest received, the
linear correlation coefficient r=0.91 was applied. To determine the degree
of the quantitative relationship the function of linear regression was
used. That function has a form as follows: y=-10.158+0.326x. It may be
calculated, based on that formula, that increasing the energu outlay by 1
MJ per hectare causes the harvest increase by 0.326 kg.
Lipowiecka M., 1989. Energy outlay in onion production in pivate holdings. Folia Horticulturae I/2: 75-85.