Fertigation is the solution
The
use of this technique in field crops lowers the cost of fertilizer application
and prevents damage from foot traffic of machinery.Fertigation is the application of solid fertilizers (diluted ) liquid cultures or by pressurized irrigation systems or drip. The expansion of this technique in our country is associated with the use of irrigation equipment , which is on the rise .
While it
has limited distribution , their advantages are numerous. For field crops , Fertigation
reduces the cost of fertilizer application per hectare to be the two operations
into one, since it is used irrigation equipment . This cost savings brings
about another advantage. Fertigation reduces compaction or impact damage on
crops.
"
When fertilizer broadcast sprayer or tractor is used is passed and this can
cause damage from foot traffic . Wheat For example , when in bloom would not be
advisable to enter the lot ," said Martellotto , engineer Inta Manfredi .
On the other hand , allows to handle the time of application opportunity , in several stages , for example to the seed and grain filling , and thus improve the protein level . It is also a good economic strategy to diversify risks. " If corn is in 410 or 612 sheets and a hail falls when all the fertilizer applied and I lost everything. Conversely, if the incorporation divided into three or four, which was not used was spared ," said the engineer.
With respect to equipment, Martellotto considered to be taken into account two issues to avoid errors:
1) You
have to introduce a uniform to be applied evenly doses because many times
Centrifuge systems with Venturi or variations occur at the dosages occurs ;
while the piston pump systems to variable stroke are more efficient since they
are independent of the changes in pressure or the amount of water passing
through the device , that the piston the same amount of fertilizer is always
introduced .
2)
Rainfall . There must be uniformity of application of the sheet. " A pivot
of a given radius is 600 meters has to throw at each different section '
instantaneous rain' to compensate for differences in tangential velocity.
Variations in the uniformity of the sheet will cause variations in the dosage
of fertilizer to apply , as observed working equipment with nozzle designs
known as ' dry fingerprint ' , with certain amount of water per unit area. the
nozzle has a different speed in the last tower with respect to the first.
When
spray nozzles are designed, is compensated this Unlike tower. If errors occur
in these designs , where little water is pulled, there will be no fertilizer,
" said Martellotto .
Fertigation
is also advantageous for the vines , olive and fruit , where equipment is used
by dripping. Martín González , advisor Intensive Cultivation area of Black
River , Cuyo and Neuquén Petrobras listed dosage of nutrients, less use of
labor and water savings
