This is what we have read, not what the state pays. Nobody has yet confirmed a Meghalaya figure against the national norms, and this page does not give you one. It tells you what Meghalaya publishes, what is in it, and what to do with that. The national cost norms that apply meanwhile are in the guides linked at the foot of this page.
The Department of Agriculture and Farmers' Welfare is one of the few that files the Mission where you would look for it.
The classification, and why it is the hard part
Meghalaya publishes a horticulture schemes page which sorts what it offers by type: state plan, centrally sponsored, and the Mission for Integrated Development of Horticulture as a category of its own.
That sounds administrative. It is actually the question a grower most needs answered and most states leave unanswered. A state plan scheme is the state's own money, its own terms, and often its own crops and priorities. A centrally sponsored scheme runs on national terms with a shared budget. The Mission is centrally sponsored and large enough to sit on its own.
Which category a scheme sits in decides whose document governs, which office decides, and whether the national cost norms in the guides below apply at all. Where a state lumps everything into one list, you have to work that out yourself, usually by asking. Meghalaya has done it for you.
What we could not get out of it
The contents. The page is a selector: the list of schemes under each type is fetched after a choice is made, so a request returns the chooser rather than the choices. Nothing is registered here as a result.
The department has already done the hard part by separating the Mission out; it simply cannot be reached by fetching. Working that selector from a browser and reading what sits under the Mission category is the next piece of work on this state.
The regional rule
Meghalaya is in the North Eastern region, so the Mission reaches a grower here as HMNEH rather than as NHM, and under the national guidelines the Government of India contributes 90% of the outlay rather than 60%. That is the split between governments, not a rate of assistance, but it is why a North Eastern state's own scheme papers can differ from a plains state's.
What to do
Open the schemes page and use the classification — it will tell you within one click whether what you are looking at is the state's money or the Government of India's, which changes everything that follows. For the Mission's components and figures use the guides below, each naming the page it came from. For a state plan scheme, ask the department for its own terms, because the national norms will not describe it.