For example, an individual can be AB, D positive, and at the same time M and N positive (MNS system), K positive (Kell system), Lea or Leb negative (Lewis system), and so on, being positive or negative for each blood group system antigen.
Nearly every list of easy-to-grow vegetables starts with lettuce, and with good reason: so long as you plant it at the right time, it will grow from seed with little attention. The right time is when the soil is cool, in the spring and fall. In Arkansas, you can plant lettuce seeds from February to April, and again in September for a fall harvest.
Overview. Tomatoes are a popular garden plant that grows well in Oklahoma when given the proper amount of water and fertilizer during the summer growing months.Plant tomato seedlings that are six to eight inches in height with stocky stems in a soil that holds moisture yet is well-draining to prevent standing water.hoose tomato varieties that are disease resistant to Fusarium wilt and nematodes, as these are common problems in Oklahoma. Three tomato plants per family member will provide an adequate amount of fresh tomatoes during harvest.