Nigrescens (IMAGE) Canale Communications Caption Fruit color of the nigrescens oil palm changes very little as it ripens, especially from the perspective of harvesters on the ground, making it difficult to determine when a bunch is ripe. Credit MPOB (Malaysian Palm Oil Board) Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.