Basic recommendations for leaf sampling:

• The samples must collected by a person specially trained for this job.  It is preferable that it is always the same person.

• The leaves should be placed in paper bags or perforated plastic bags.

• Each sample must be identified with the corresponding information:  name of the farm, contact person, telephone, e-mail, date of sample collection, crop, lot / block and kind of analysis required. 

• The maximum timeframe to send the sample to the laboratory is two days from the collection of the sample.  If more time is required, keep the sample refrigerated before shipment.

• Direct sunlight exposure and high temperatures should be avoided.

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NOTE:  To offer you a better service, please send the samples with the "Analysis Request Form" filled with the required information.

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The type of tissue to be analyzed depends on each crop, age and part of the plant: