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For example, nitrogen compounds comprise 40% to 50% of the dry matter of protoplasm, and it is a constituent of amino acids, the building blocks of proteins. [9] It is also an essential constituent of chlorophyll. [10] In many agricultural settings, nitrogen is the limiting nutrient for rapid growth.
Lettuce grows best in full sun in loose, nitrogen-rich soils with a pH of between 6.0 and 6.8. Heat generally prompts lettuce to bolt , with most varieties growing poorly above 24 °C (75 °F); cool temperatures prompt better performance, with 16 to 18 °C (61 to 64 °F) being preferred and as low as 7 °C (45 °F) being tolerated. [ 33 ]
Worldwide in soils rich in nitrogen, especially on wasteland: Leaves and young shoots; edible raw or prepared as a green vegetable [39] Good-King-Henry: Chenopodium bonus-henricus: Most of Europe, West Asia and eastern North America: Young shoots (until early summer) and leaves (until August). The shoots can be cooked like asparagus, and the ...
Most adults in the U.S. aren't eating enough fiber. Start with high-fiber vegetables to get more in your diet. Learn why experts love these fiber-rich veggies.
It is a rich source (20% or more of the Daily Value, DV) of vitamin A, vitamin C, manganese, and folate (31-52% DV), with an especially high content of vitamin K (403% DV) (table). Spinach is a moderate source (10–19% of DV) of the B vitamins , riboflavin and vitamin B 6 , vitamin E , potassium , iron , magnesium , and dietary fiber (table).
Following a diet high in fruits and vegetables may help reduce heart and kidney disease risk, especially for people with high blood pressure, a new study suggests.
Photo: iStock. Design: Eat This, Not That!Antioxidant-rich foods have long been championed by health professionals as crucial components of a healthy diet, backed by thousands of studies ...
Nutrients in the soil are taken up by the plant through its roots, and in particular its root hairs.To be taken up by a plant, a nutrient element must be located near the root surface; however, the supply of nutrients in contact with the root is rapidly depleted within a distance of ca. 2 mm. [14] There are three basic mechanisms whereby nutrient ions dissolved in the soil solution are brought ...