Just before the interval, Solanke finished off Groeneveld s assist in the 47th minute to put the hosts ahead.
Bournemouth, however, failed to preserve their lead after the restart as goals from Dominik Freiser and Carlton Morris in the 60th and 80th minutes respectively turned the game around for Barnsley.
Solanke played for the entire duration while Kenya s Clark Odour, Nigeria s Victor Adeboyejo and Zimbabwe s Jordan Zemura watched on as unused substitutes from the bench.
Saturday s defeat saw the Cherries drop to seventh in the Championship table after gathering 56 points from 36 matches while Barnsley remain sixth in the play-off zone with a five-point gap.
Solanke s effort not enough as Bournemouth lose while Meite helps Reading maintain Championship unbeaten run
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Solanke s effort not enough as Bournemouth lose while Meite helps Reading maintain Championship unbeaten run
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Barnsley are preparing different transfer targets for whether they are in the Championship or Premier League next season, says chief executive Dane Murphy.
The Reds are currently in the play-off places, with 11 games remaining in the season, which is the highest they have been at this stage of a campaign since 2000.
Although he is reluctant to discuss a promotion challenge, Murphy admits the Reds have to start planning for if they reach the top flight for the first time in 23 years.
Murphy told the Chronicle: “I am not using the P-words that a lot of people might be using when talking about Barnsley and the league table, but the one P-word I will use is preparation.