It means replacing old machinery and bringing in newer, better machinery. It means implementing better and more up-to-date technology, adopt more sustainable practices and pretty well losing the old traditional ways that were less cost effective than the newer ways.
No.
getting a newer model or downloading new software.
agri = agriculture, esp. in relation to technology or business
agriculture
Before agriculture
farming to goods
Yes, spices were grown in primitive agriculture. Sure, if by primitive agriculture you mean horticulture, seasoning plants definitely count as primitive agriculture, supplementary to hunting and gathering.
System maintence could mean anything from updating or upgrading your computer to checking for viruses and defragging your computer.
Agriculture and manufacturing
They refer to farming and to business.
Agriculture is farming. Yields is what you get out of it. So it's about how successful, how much money, farming brings in.
How to upgrading the existing facilities in country