40
BLITZ
5-1996
Before finishing it is necessary to point out the importance of the feed speed for a rational and economically profitable
treatment. A correct intervention requires that the mixture cloud penetrates the structure of the row, spraying the whole
vegetation surface, and that it comes out beyond the plants, avoiding to involve wide areas of empty space. Disregarding
this condition causes a dispersion of product. This inconvenient may be avoided by increasing the feed speed so as to
reduce the time of penetration of the air flow in the row and maintain the mixture output within the limits required to avoid
product dispersion. When the structural characteristics of the cultivation and the functional ones of the sprayers allow
it, the speed may also be reduced. This choice, which increases the time of penetration, must be made only when
pulverization can also reach and cover the rows contiguous to those in which the passage occurs.
Worked surface per hour = "ha/h"
It is the surface of ground which contains the cultivation covered
in one hour of effective treatment.
The idle times for preparation, loading, transfert, etc. are not taken to consideration.
This parameter is easy to determine and you can have it using the two parameters obtained above. It is of fundamental
importance because, only by knowing the exact surface worked per hour, it is possible to calculate the quantity of water
the sprayer must spray in one hour, in order to carry out the treatment with the selected litres per hectare. In short, to
state how many hectares of ground can be worked in one hour, it is sufficient to use the following formula:
km/h
= ha/h
10
BY MULTIPLYING THE VIRTUAL WIDTH OF TREATMENT IN METERS (Lm) BY THE FEED SPEED IN KILOMETERS
PER HOUR DIVIDED BY TEN (km/h: 10) YOU GET THE SURFACE WORKED IN HECTARS PER HOUR (ha/h).
It is obvious that if the working width remains unchanged during the treatment, the worked ha/h changes if the speed is
increased or decreased.
If a cultivation has 3 mt distance between the rows, and at each passage 2 rows are covered, the virtual working width
of 6 mt (3 mtx2) always remains unchanged, while the surface worked per hour changes according to the gear selected
for treatment:
at
4 km/h
= (4 x 6 mt = 24, divided by 10)
2,4
worked ha/h
at
4,5 km/h
= (4,5 x 6 mt = 27, divided by 10)
2,7
worked ha/h
at
5 km/h
= (5 x 6 mt = 30, divided by 10)
3
worked ha/h
UMAP090A
Lm x
FEED
SPEED
3
3
6mt.
6mt.
6mt.
6mt.
2,4 HECTARES PER HOUR
2,7 HECTARES PER HOUR
3 HECTARES PER HOUR
30000 mq
27000 mq
24000 mq
4500
mt
/hour
4000
mt
/hour
5000
mt
/hour