Essex coach Paul Grayson was unhappy with Nottinghamshire's ground staff as their CB40 game on Sunday at Trent Bridge was rained off.
Essex had been set a revised target of 74 from 10 overs, but never got the chance to bat.
And Grayson felt that the Notts ground staff could have taken the covers off much sooner.
He told BBC Essex: "I'm not happy, very disappointed. I expressed my opinions to the ground staff."
He continued: "We fancied chasing down those runs. One or two members said it's a disgrace we're not out playing cricket, and I agreed with them.
"And you wonder why so many people are turning away from the game. There was an opportunity to see a 10-over game, we could have been out there playing."
Nottinghamshire had earlier scored 127-7 in 23 overs before rain curtailed their innings.
The no result puts Essex level at the top of their group with Somerset, though they have played a game more.
Essex host Glamorgan on Wednesday and will have Scott Styris available for the last time before he flies back to New Zealand.