Nitrogen, Phosphorus, and Potassium - Needs and Balance for High Yields

2015 ◽  
pp. 57-67
Author(s):  
Werner L. Nelson
Keyword(s):  
Phosphorus And Potassium ◽  
High Yields ◽  
Nitrogen Phosphorus

scholarly journals Effect of Organic and Mineral Fertilizers on the Accumulation of Total Nitrogen, Phosphorus and Potassium in the Surface Mass in Cover Crop of Alfalfa

2021 ◽  
Vol 7 (7) ◽  
pp. 62-67
Author(s):  
E. Allahverdiyev ◽  
S. Khalilov
Keyword(s):  
Total Nitrogen ◽  
Mineral Fertilizers ◽  
First Year ◽  
Surface Mass ◽  
Organic And Mineral Fertilizers ◽  
Phosphorus And Potassium ◽  
High Yields ◽  
Cultivation Techniques ◽  
Fertilizer Rates ◽  
Nitrogen Phosphorus

The article examines the effect of organic and mineral fertilizers on the accumulation of total nitrogen, phosphorus and potassium in the surface mass of alfalfa in the gray-meadow soils, which have long been irrigated and poorly supplied with nutrients in the Karabakh region. issues were commented: Provision of plants with essential nutrients during the growing season, productivity, product quality depends on the availability of easily digestible nutrients in the soil. In order to get high yields from agricultural crops, organic and mineral fertilizers should be applied to the soil every year in accordance with the norms established on the basis of soil cartograms, and cultivation techniques should be properly followed. The optimal diet for alfalfa depends on the optimization of fertilizer rates in different irrigations. The highest amount of total NPK was observed in the first form over the years and decreased in subsequent forms. Each of the formations in the surface mass was high in nitrogen and potassium, and low in phosphorus. In the 2nd and 3rd years of alfalfa condition, the total NPK was higher than in the first year in terms of formats. This is due to the fact that alfalfa increases the amount of nutrients in the soil and soil fertility. It also has a positive effect on the regulation of nutrients in the surface mass of alfalfa.

scholarly journals Impact of Organic and Mineral Fertilizers on Gathering of Total Nitrogen, Phosphorus and Potassium in Surface Mass of Lucerne in Coated Planting

2020 ◽  
Vol 6 (2) ◽  
pp. 151-157
Author(s):  
E. Allahverdiev
Keyword(s):  
Total Nitrogen ◽  
Mineral Fertilizers ◽  
Nutrient Regulation ◽  
Surface Mass ◽  
Organic And Mineral Fertilizers ◽  
Agricultural Plants ◽  
Phosphorus And Potassium ◽  
High Yields ◽  
Good Food ◽  
Nitrogen Phosphorus

The problems of impact of organic and mineral fertilizers on gathering of total nitrogen, phosphorus and potassium in the lucerne surface mass in coating planting of the grey–meadow soils which are weakly provided with the nutrient under the condition of Karabakh region were commented. Provision of plants with the main nutrient during the vegetation, productivity, crop quality depends on supply of the nutrient which is easily assimilated. In order to get high yields from agricultural plants, the organic and mineral fertilizers must be applied to a norm which was fixed on the basis of soil cartograms, the cultivation agrotechnics must be correctly fulfilled every year. The good food regime for the lucerne depends on optimization of fertilizer norms in different irrigation. The highest quantity of total NPK was observed in the first mowing, but it reduced in the next mowing’s. Nitrogen and potassium is high in each of the mowing’s, but phosphorus is little on the surface mass. This is due to increase of the nutrient quantity of lucerne and soil fertility. This positively influences on nutrient regulation on the surface mass over the mowing’s in lucerne plant.

Effects of Water-Nitrogen Interaction on Absorption, Translocation and Distribution of Nitrogen, Phosphorus, and Potassium in Rice

2010 ◽  
Vol 36 (4) ◽  
pp. 655-664 ◽  
Author(s):  
Yong-Jian SUN ◽  
Yuan-Yuan SUN ◽  
Xu-Yi LI ◽  
Rong-Ping ZHANG ◽  
Xiang GUO ◽  
...  
Keyword(s):  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

scholarly journals Effects of serpentinite fertilizer on the chemical properties and enzyme activity of young spruce soils

2016 ◽  
Vol 30 (4) ◽  
pp. 401-414 ◽  
Author(s):  
Ewa Błońska ◽  
Kazimierz Januszek ◽  
Stanisław Małek ◽  
Tomasz Wanic
Keyword(s):  
Enzyme Activity ◽  
Chemical Properties ◽  
Molar Ratio ◽  
Tree Roots ◽  
Forest Zone ◽  
Negative Effect ◽  
Phosphorus And Potassium ◽  
One Year ◽  
Nitrogen Phosphorus ◽  
Experimental Plots

AbstractThe experimental plots used in the study were located in the middle forest zone (elevation: 900-950 m a.s.l.) on two nappes of the flysch Carpathians in southern Poland. The aim of this study was to assess the effects of serpentinite in combination with nitrogen, phosphorus, and potassium fertilizers on selected chemical properties of the soil and activity of dehydrogenase and urease in the studied soils. All fertilizer treatments significantly enriched the tested soils in magnesium. The use of serpentinite as a fertilizer reduced the molar ratio of exchangeable calcium to magnesium, which facilitated the uptake of magnesium by tree roots due to competition between calcium and magnesium. After one year of fertilization on the Wisła experimental plot, the pH of the Ofh horizon increased, while the pH of the mineral horizons significantly decreased. Enrichment of serpentinite with nitrogen, phosphorus, and potassium fertilizers stimulated the dehydrogenase activity in the studied organic horizon. The lack of a negative effect of the serpentinite fertilizer on enzyme activity in the spruce stand soil showed that the concentrations of the heavy metals added to the soil were not high enough to be toxic and indicated the feasibility of using this fertilizer in forestry.

scholarly journals Effects of nitrogen, phosphorus and potassium rates on Microdochium patch

itsrj ◽  
2021 ◽  
Author(s):  
Brian McDonald ◽  
Alec Kowalewski ◽  
Clint Mattox ◽  
Emily Braithwaite ◽  
Charles Schmid
Keyword(s):  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

scholarly journals Phytotoxic effects of invasive Ageratina adenophora on two native subtropical shrubs in Nepal

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tej Bahadur Darji ◽  
Barsha Adhikari ◽  
Seeta Pathak ◽  
Shristi Neupane ◽  
Lal B. Thapa ◽  
...  
Keyword(s):  
Low Ph ◽  
Potential Mechanism ◽  
Phytotoxic Effects ◽  
Seedling Length ◽  
Ageratina Adenophora ◽  
Ir Analysis ◽  
Allelopathic Interference ◽  
Phosphorus And Potassium ◽  
Native Shrubs ◽  
Nitrogen Phosphorus

AbstractThe response of native plants to allelopathic interference of invasive species may differ from species to species. In this study, the phytotoxic effects of Ageratina adenophora were tested on two native shrubs (Osbeckia stellata and Elsholtzia blanda) of Nepal. Both the shrubs were grown in pots under treatments of A. adenophora fresh leaves and root leachates, and litter. Then, the seedling length and biomass were compared among the treatments. The results show that A. adenophora litter has stimulatory effects but the leachates from fresh leaves and root are phytotoxic to the growth and development of native shrubs. Infrared Spectroscopy (IR) analysis confirmed the presence of O–H (Hydroxyl), N–H (Amines), C≡C (Alkynes), and C–H stretching (Aromatic) or C–O–C stretching (Ethers) in the leachates representing harmful allelochemicals. The invaded soil by A. adenophora had low pH and a high amount of organic matter, total nitrogen, phosphorus, and potassium than the uninvaded soil. The results indicate that the native O. stellata and E. blanda are harmed by A. adenophora in nature by leaching of allelochemicals and probably by reducing the soil pH. Overall, this study has provided valuable insights regarding the effects of A. adenophora invasion on native shrubs and revealing the potential mechanism of its invasiveness.

Nitrogen, phosphorus and potassium utilization and their cycling in a beef-forage production system

2009 ◽  
Vol 80 (4) ◽  
pp. 475-485 ◽  
Author(s):  
Yusuke TABATA ◽  
Daisuke TOGO ◽  
Masayuki KITAGAWA ◽  
Kazato OISHI ◽  
Hajime KUMAGAI ◽  
...  
Keyword(s):  
Production System ◽  
Forage Production ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus
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