Phosphorus (P) crop fertilization requires optimal management to avoid the waste of a non-renewable resource and water pollution, but current methods for assessing soil phyto-available P and plant P requirements are not sufficiently precise to meet this goal. The objectives of the present study were to (1) evaluate the effect of long-term P …
1. Introduction. Phosphorus (P) and nitrogen (N) are essential for crop growth and are "key limiting nutrients" in China, as they are used in the production of almost 35–40% of China's maize and 60–80% of China's wheat (Xin et al., 2017).The application of synthetic fertilizers, specifically the combined application of organic and chemical …
When bioavailable Zn levels in soil are sub-optimal, Zn deficiency can have severe biochemical and physiological consequences for plants. Deficiency symptoms, which include chlorosis and stunted growth, as well as reduced yield and lowered grain micronutrient contents, are observed when leaf concentrations fall below 15 mg Zn kg …
1 Review Article Phosphorus acquisition by plants: challenges and promising strategies for sustainable agriculture in the XXI century Tamara GÃ"MEZ …
2.1. Role of Nitrogen. Nitrogen is an essential macronutrient for microalgal growth and plays an important role in protein, lipid and carbohydrate synthesis [5,7].Generally, nitrogen concentration significantly influences microalgal growth and their biochemical compositions; at the same time, depletion of nitrogen in cultivation medium …
Pi as a Key Element for Plant Growth and Metabolism Regulations. The average shoot dry weight was lower in P deficient plants than in the sufficient-P supplied of soybean, cowpea, wheat, and maize from the different published studies used.The dry matter biomass reduction was 41.4, 46.5, 135.8, and 119%, higher in the P deficient …
Plants' requirement of Phosphorus (P) as an essential macronutrient is obligatory for their normal growth and metabolism. Besides restricting plants' primary growth, P depletion affects both primary and secondary metabolism and leads to altered levels of sugars, metabolites, amino acids, and other secondary compounds. Such …
This multipart process is a complex regulatory mechanism by which plant ammonium transporters achieve optimal ammonium uptake in response to exposure to various nitrogen forms [69]. ... AtPHT1.1–1.4 proteins dominated phosphate uptake when the phosphate concentration was 200 μmol L −1 [158], [165], [166].
The results reveal several dose-dependent effects of P nutrition on the cannabinoid profile of both genotypes, as well as on the ionome and plant functional physiology, thus supporting the hypothesis: (i) P concentrations ≤15 mg L –1 were insufficient to support optimal plant function and reduced photosynthesis, transpiration, …
1 Introduction. Carbon (C), nitrogen (N), and phosphorus (P) are indispensable elements in plant growth (Chang et al., 2022).C serves as the fundamental energy supplier in ecosystems (Wang et al., 2021), while N and P play crucial roles in electron transfer during respiration and act as key limiting factors for primary production …
The lower phosphorus concentration then becomes limiting in ATP synthesis and regeneration of ribulose bisphosphate (Farquhar and ... et al. (2015). Elevated CO 2 improves growth and phosphorus utilization efficiency in cereal species under sub-optimal phosphorus supply. J. Plant Nutr. 38, 1196–1217. doi: …
Elevated CO 2 effects on plant biomass. We found very strong CO 2 fertilization effects on the aboveground and total biomass of the three species. The optimal CO 2 levels for the aboveground biomass were 945, 915, and 1151 ppm, and for the total biomass were 915, 1178, and 1386 ppm for tall fescue, perennial ryegrass, and …
Phosphorus (P) is one of the major plant nutrients that directly or indirectly affects all biological processes. This chapter provides an overview of the plant processes regulated by P nutrition. Phosphorus availability is one of the major growth limiting factors in many ecosystems around the world. Interaction of soluble P in soil with cations ...
nitrogen from outside sources. The increasing concentration of available phosphorus allows plants to assimilate more nitrogen before the phosphorus is depleted. Thus, if sufficient phosphorus is available, elevated concentrations of nitrates will lead to algal blooms. Although levels of 0.08 to 0.10 ppm phosphate may trigger periodic blooms,
Phosphorus in plant cells exists either as Pi or as organic P (White and Hammond ... Reducing P input and the soil-available P concentration required for …
Phosphorus in plants exists either as the free inorganic orthophosphate form (Pi) or as organic phosphate esters. ... Maximum photosynthetic rate (A max) plotted against leaf phosphorus concentration (N : P ratios below (red circles) or above (blue) 15). Lines are standard major axis regressions. ... Redistribution of P for optimal plant …
Numerous drivers such as farming practices, erosion, land-use change, and soil biogeochemical background, determine the global spatial distribution of phosphorus (P) in agricultural soils. Here ...
The importance of phosphorus in the regulation of plant growth function is well studied. However, the role of the inorganic phosphate (Pi) molecule in the …
We used modelled projections and their estimated 90% confidence intervals 20 of mean global topsoil (0–20 cm) plant-available phosphorus concentrations (termed Olsen phosphorus 52) at 1 km 2 resolution to isolate areas of the globe that were above or below thresholds of Olsen phosphorus for the optimal yield of 28 crops. We used …
elemental P and phosphate (P. 2. O. 5). Soil test results are usually reported as elemental P, while commercial . 2. O. 5, where 2.29 pounds of P. 2. O. 5 . is the equivalent of 1 pound of P. For example, 100 lbs of P. 2. O. 5 . is equivalent to 44 lbs P. Soil test phosphorus (STP) is an indicator of how much P is expected to be available for ...
(a) Leaf nitrogen (N) vs leaf phosphorus (P) (log of concentration in mg g −1 DW) among 700+ plant species, distinguishing woody and herbaceous species. Crop plants ( c . 50 species) are found …
The P demand of the organisms is due to the special role of phosphorus in their energy metabolism. P is needed to form the cell membrane and DNA. Some of the phosphorus in wastewater is eliminated biologically (bio-P). The rest can be removed by chemicophysical phosphate precipitation. Phosphorus compounds are determined as ortho-PO 4-P
Arbuscular mycorrhizal (AM) fungi penetrate the cortical cells of the roots of vascular plants, and are widely distributed in soil. The formation of these symbiotic bodies accelerates the absorption and utilization of mineral elements, enhances plant resistance to stress, boosts the growth of plants, and increases the survival rate of transplanted …
The goal of this study was to determine the optimal concentration of N, P, and K in the nutrient solution for the flowering stage of soilless cannabis production using RSM. The optimal concentrations of nutrient solution N and P was predicted to be approximately 194 mg L –1 N, and 59 mg L –1 P, respectively. Based on analysis of the ...
At high levels, phosphates and nitrates from mineral fertilizers and wastewaters are contaminating natural waters, leading, for example, to eutrophication and death of many living species. This requires remediation techniques such as physical, chemical, biological methods, and nano-techniques. For instance, microbes such as …
For a continuous fertilization program for plants grown in a soilless substrate, the target concentration is between 8 ppm and 15 ppm of P. Providing levels below that will result in less plant growth, while concentrations above that level provide little benefit while costing more money. Phosphorus is also the primary contributor to plant stretch.
This review examines how nitrogen and phosphorus concentration and the N:P ratio in wetland plants vary among species and sites, and how they are related to nutrient availability and limitation. ... If the optimal pro- portions differ among species, some species may be lim- ited by N and others by P at the same ratio of N to P availability ...
Phosphorus (P) occurs in oxidized forms in natura, most commonly as orthophosphate (PO 43–). Plants acquire P almost exclusively by transporting soluble …
Plant growth and development largely depend on the combination and concentration of mineral nutrients available in the soil. Plants often face significant challenges in obtaining an adequate ...
The challenge is that phosphorus is a macronutrient in plants but behaves somewhat like a micronutrient in soils. The concentration of soluble phosphate in the soil solution is very low, and phosphorus is relatively immobile in the soil. That is important because crops take up phosphorus only from the soil solution.
Main text Plants, phosphorus, and agriculture. Phosphorus (P) occurs in oxidized forms in natura, most commonly as orthophosphate (PO 4 3–).Plants acquire P almost exclusively by transporting soluble inorganic H 2 PO 4 – (Pi) from the soil into their roots. The Pi concentration in most soil solutions ranges between 0.5 and 10 μM, …
It is crucial to synergistically improve the yield and quality of sweet maize by implementing precise and strategic planting methods. However, a comprehensive understanding of how increasing plant density affects the sweet maize fresh ear yield, grain-filling rate, and grain carbohydrate concentration is not fully understood. Thus, a …