Abstract.
A brief review of the literature on the effects of nitrate and ammonium nitrogen sources on plant growth, and the
assimilation of those nitrogen sources, has been presented.
A water culture technique for the growth of maize was
developed. The use of a gravel rooting medium with nutrients
recycling through the rooting medium, and an iron supplement in
the form of ferric citrate, resulted in superior growth of
nitrate-fed plants in comparison to that observed with a
hydroponic growth technique and a standard Long Ashton nutrient
solution.
The effects of nitrogen source on plant growth, organic
nitrogen and inorganic nitrogen contents, and the rates of
incorporation into nitrogenous compounds were studied. The
observed differences were explained with reference to the effects
of the various nitrogen sources on the physiology of the plants.
The experimental techniques included assays of the enzymes
nitrate reductase and glutamine synthetase, whole plant growth
exudate and those extracted from the leaf blade, leaf base, and
root regions of maize plants after feeding with a nutrient
solution containing nitrogen as 15 N.
After 48 days of growth ammonium- and nitrate ammonium-fed maize had larger fresh weights than those fed with
nitrate. Plants grown with ammonium as the sole nitrogen source
had greater organic nitrogen contents than those grolii!l with
Murphy, A (2021). A Study Of The Effects Of Nitrate, Ammonium, And Nitrate + Ammonium Nutrition On Nitrogen Assimilation In Zeamays L.. Afribary. Retrieved from https://afribary.com/works/a-study-of-the-effects-of-nitrate-ammonium-and-nitrate-ammonium-nutrition-on-nitrogen-assimilation-in-zeamays-l
Murphy, ANDREW "A Study Of The Effects Of Nitrate, Ammonium, And Nitrate + Ammonium Nutrition On Nitrogen Assimilation In Zeamays L." Afribary. Afribary, 15 May. 2021, https://afribary.com/works/a-study-of-the-effects-of-nitrate-ammonium-and-nitrate-ammonium-nutrition-on-nitrogen-assimilation-in-zeamays-l. Accessed 18 Dec. 2024.
Murphy, ANDREW . "A Study Of The Effects Of Nitrate, Ammonium, And Nitrate + Ammonium Nutrition On Nitrogen Assimilation In Zeamays L.". Afribary, Afribary, 15 May. 2021. Web. 18 Dec. 2024. < https://afribary.com/works/a-study-of-the-effects-of-nitrate-ammonium-and-nitrate-ammonium-nutrition-on-nitrogen-assimilation-in-zeamays-l >.
Murphy, ANDREW . "A Study Of The Effects Of Nitrate, Ammonium, And Nitrate + Ammonium Nutrition On Nitrogen Assimilation In Zeamays L." Afribary (2021). Accessed December 18, 2024. https://afribary.com/works/a-study-of-the-effects-of-nitrate-ammonium-and-nitrate-ammonium-nutrition-on-nitrogen-assimilation-in-zeamays-l