The product quality requirements of modern outdoor vegetable cultivation are becoming
more stringent and increasing importance is also attached to a defined guarantee
of yield. These demands may be satisfied by using protective netting.
The working methods employed in practice and the process technology hardly differ.
The differences between individual variants - 1 to 7% per net – are therefore relatively
low, as is the size degression. An average of 1.3 manpower-minutes per m are required
for the complete process. The time requirement per net is about 26.7 min., 13 min.
of which are needed for placement and 11.1 min. for removal. The difference is made
up by transportation to and from the field and loading the nets.
Covering the crop takes up 48 % or almost half the total working time requirement.
Removing the nets accounts for 42 %. 10 % is used in driving to and from the field for
placement and in loading the rolls or bales of netting before placement and after
removal. There is no additional transportation time, as the nets are carried as part of
the relevant transport to and from the field. Removal involves no extra journey times if
the netting is removed from the crop immediately prior to harvesting, the journey to
and from the field then being calculated as part of the working time requirement for
harvesting
