Each correctly-entered Glyph gains the agent 100 AP. If the entire sequence is correctly entered, the speed bonus will be applied to the AP reward. This AP is independent of the 200 AP reward for hacking an enemy Portal.
There are different types of hay, and the different types have different nutritional values and usages. Alfalfa, red clover, timothy, bermudagrass and tall fescue are all types of hay grown as feed crops for animals from horses to rabbits.
Size and weight of a bale depends on the operator and what kind of machine [s]he's using. Three main types of hay bales that I know of: Small square, large square, and large round. Weight is affected by how tight the cut forage is packed into a bale, the type of crop, and the moisture content of the forage.