Intermediate-day Onions produce bulbs where the total amount of daylight is approximately 12-14 hours, which is the amount mid-section states receive in the summer. Intermediates are also known as day-neutral onions. Long-day Onions produce bulbs where the total amount of daylight is 14-16 hours.
Anaerobic Zone. The anaerobic zone is slightly more intense than the aerobic zone. Anaerobic means without oxygen, so don't be surprised if you are unable to speak except for short words at a time in this zone. The anaerobic zone is 80 to 90 percent of your maximum heart rate.erobic Zone. The aerobic target zone is 70 to 80 percent of your maximal heart rate. Multiply your maximum heart rate by this percentage to determine the intensity you must maintain to remain in this zone.
A simple way to determine your maximum heart rate is by subtracting your age from the number 220; for women, the heart rate max calculation is more complex -- 206 minus 88 percent of your age. Working out in the aerobic zone has your heart pumping at between 70 percent and 80 percent of its maximum.Your anaerobic zone is somewhere between 80 percent and 90 percent of your MHR. For example, if you are 40-year-old woman, your MHR is 171.When you train within the aerobic zone, your heart beats between 120 and 137 beats per minute. Exercising in the anaerobic zone has your heart beating between 137 and 154 bpm.f you've just started an exercise program, don't push yourself into the anaerobic zone. ACE indicates that most healthy adults exercise so their heart beats between 50 percent and 80 percent of their MHR. When starting out, keep your target heart rate at the low end of this range, ACE advises.