“I was in a plot the other day that hit 10% K levels on the soil test, but the field was still showing K deficiencies,” he notes. The situation is one of cause and effect: the lack of moisture ...

Vitamin K is an essential nutrient and one of four fat-soluble vitamins (including A, D and E). There are two main kinds of vitamin K — vitamin K1 (phylloquinone) found in plants like leafy ...

Table 1 lists nutrients and foliar deficiency symptoms in corn, soybean, and wheat. Two words, “chlorosis” or “chlorotic,” frequently appear in the table. Both terms describe when leaves start ...

Nutrient deficiency can significantly impact plant health and growth. Plants require essential nutrients for various physiological processes, and a deficiency in any of these nutrients can lead to ...

Vitamin K1, or phylloquinone, comes from plants. It is the main type of dietary vitamin K. A lesser source is vitamin K2, or menaquinone, which occurs in some animal-based and fermented foods.

However, the body has difficulty absorbing vitamin K-1 from plants. According to a 2019 review, ... Vitamin K deficiency is very rare and most people get enough of this vitamin from their diet.

Vitamin K1 is mostly found in plant foods like leafy green vegetables. It makes up about 75–90% of all vitamin K consumed by humans. Here is how much vitamin K1 is present in 1 cup of the ...