Complex sentence: On the plus side, it is high yielding (commercially, 17 kg from a 9-year-old tree has been recorded), and the macadamias drop to the ground however it is thick-shelled, and with not much flavor.
Split into simpler sentences: On the plus side, it is high yielding (commercially, 17 kg from a 9-year-old tree has been recorded), and the macadamias drop to the ground. However it is thick-shelled, and with not much flavor.