Durante la se recogen los frutos de la tierra.

The word that securely fills the blank is:

- Durante la cosecha se recogen los frutos de la tierra.

Explanation:

The translation of the sentence is:

- During the harvest the fruits of the ground are collected.

The harvest is the moment in which the harvesting of the ripe fruits and the seeds of a plantation is carried out, this one during hundreds of years was carried out manually, however, nowadays a large part of it is technified and is carried out by machinery. The harvest by ancestral knowledge is organized in advance and very organized in order to be carried out in the best possible season of the year.