Cryptic

[Dippydi1956]

A central idea to look after someone's stock.

[redtrev]

How many letters and any placed?

[newmodarmy]

It looks like Dippydi doesn't give letter counts with their clues. It's from Lovatts so there will be one. 

[newmodarmy]

Plot? Something yo do with cattle?

[Hazlinny]

? clou t

[1ozzy]

Keep in mind it's a Lovatts clue, so probably doesn't make much sense, like most cryptic clues do.

[newmodarmy]

Please can  you tell us the letter count and the pattern if you have some letters already. There's no need to ask your question all over again again- just type your response here. Thanks.

[mallyh]

agist ?

[newmodarmy]

Well done mallyh. I just learnt that agist has that meaning. 

AGIST

take in and feed (livestock) for payment.

"the dairy farmer might wish to agist lambs after the cows are housed for the winter"

A Gist