An illustration of the fertilization of the egg by the spermatozooids of a Cyclospora Cayetanensis.
An illustration of the fusion of egg and sperm-nuclei of a Cyclospora Cayetanensis.
A fertilizer drill, which distributes fertilizer in a row at the desired quantity.
A manure spreader in operation. The manure was pitched from the stable to the spreader, handled only…
A farmer spreading manure by throwing it in piles and spreading it around.
F farmer spreading manure with a shovel in a field.
A farmer spreading manure firectly from atop a wagon.