Obita struck the decisive goal after Simon Cox and Darius Henderson had clawed Forest back into the match after they fell two goals behind inside 12 minutes through Pavel Pogrebnyak and Kaspars Gorkss.
Reading also had former Forest full-back Chris Gunter sent off late on for a second booking after Obita's goal, but the visitors held out to record a first win in five matches.
Adkins said: "That was his first goal for us. He's been at the club since he was eight and he's been doing ever so well. It was a great goal.
"I've given him a run in the team and he's done ever so well. You have to be bold and play these young players like Jordan and Jake Taylor."
Regarding his side's impressive start to the match, Adkins said: "We started well, got on the front foot and played some really good football in that first half. At 2-0 we were in the ascendancy.
"But just before half-time, Forest got back into it and they made two good substitutions and got themselves back on the front foot.
"We had to hang in there and at 2-2 the game was in their favour a little bit, but we scored a great goal through Obita," added the Reading boss, who was bemused by the decision to send off Gunter.
Gunter was shown a second yellow card by referee Stuart Attwell after tripping Jamie Mackie on the edge of the box in the 81st minute.
"We made two substitutions in a positive way and within a minute of that happening, he goes and sends Chris Gunter off and I really don't understand that decision, but it just showed the character of our team and we managed to see the game out," he said.
"Forest are going to be up there at the end of the season and to come away from home and get the three points is excellent."
Forest boss Billy Davies lamented a "disappointing" first-half display from his side, but was encouraged by their showing after the break.
"It was a great game and it could have gone either way," said the Scotsman.
"The first 45 minutes, we didn't compete, the second 45 was much more like us. The third goal was crucial and in the end we lost because we switched off in the centre of the park and it has cost us dear.
"I thought there only looked one team likely to win in the second half at 2-2. We had a couple of very good chances, but I thought in the second half we were much better, much more aggressive with the ball and without the ball.
"We again created a lot of chances and restricted them to few chances. Then we shot ourselves in the foot by not getting that third goal and then switching off, which was disappointing."
Forest were without several first-team players against the Royals, including Chris Cohen, who will miss the rest of the season with a knee injury, but Davies refused to blame injuries for his side's defeat.
"Chris Cohen, Kelvin Wilson, David Vaughan and Danny Collins, take your pick, they are all important players, but we don't make excuses," he added.
"The first 45 minutes was not down to these players who were out, it was down to not competing well enough."
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- Chris Gunter