I am growing yellow and white corn for market. I have some worms on them and I got the airplane to spray them but it seems not to have worked. Is there any other way to spray them? And what would be the best fertilizer to use? I will appreciate it a lot if someone can help me with this problem. I live in northern California and the fertilizer company that is closer to me is Wlibur-Ellis. I will be waiting for a response. Thank you in advance for your help.