40
Marchesan Implementos e Máquinas Agrícolas “TATU” S.A.
PST 4
Adjustments and operations
• The working speed affects the uniform seed distribution.
• When there is a change in the batch of seeds as well as in the fertilizer
manufacturer, everything must be assessed again.
• It is important to assess all adjustments again after the first day of
work.
Practical test of seed and fertilizer distribution
IMPORTANT
ATTENTION
The data on the previous tables (seed and fertilizer) can vary due to
several factors. Therefore, carefully observe the following procedures.
The most indicated way to assess the amount of seed and fertilizer rate is performing
the test on the same field the plantation will take place, following these steps:
• Whenever possible, use the same tractor and operator to perform the plantation.
• The correct inflation of the planter tires is important to maintain uniformity in the
plantation. Keep the same pressure on all tires.
• Mark the distance for test. Fertilizer table example: 50 linear meters.
• Fill up the planter hoppers at least to the half and then travel some meters to completely
fill the distributors before entering in the delimited area.
• Place the collection bags in the fertilizer dispensers (preferably use plastic bags). In
the seed dispensers, use cotton waste to hinder the exits.
• Drive the tractor in the delimited space, using the same speed that will be used in the
whole plantation.
• Recommended speeds:
5 to 5.5 km/h for corn and sunflower plantation.
6 to 6.5 km/h for bean / sorghum / acid delinted cotton plantation.
7 km/h for soybean plantation.
• Weigh the fertilizer contained in the bags and compare it to the second line of the
previous tables (grams in 50 meters per row unit).
• Remove the cotton waste of the seed dispensers, picking up the seeds for counting.
• Compare with the table and, if necessary, redo the tests changing the adjustments.
• After getting the desired amount and still in the field, move the tractor in the same
speed, leaving the fertilizer and seed to reach the soil for better verifying the distribution
uniformity.
