... ). Increasing the percentage of fruit setting, promoting fruit 's enlarging. 3). Increasing burliness rate, increasing weigh of ... resist fruit dropping and flower dropping, promote fruit’s enlarging, and early maturation. So, there is ... deeper, prevent bolls from dropping efficiently, promote boll’s enlarging, make stem more robust and leaf thicker ... more than20%. Brassinolide 90%TC ,0.01%SL ,0.1%SP