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Optimal P managements are the equivalent of 16.0–38.3 kg P 2 O 5 hm −2 of P fertilizer. •. High P fertility soil has sustainable productivity in the rapeseed–rice …
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1. Introduction. Phosphorus is a non-renewable resource that usually exists in nature in the form of organophosphorus compounds and phosphates [1].Plants need key nutrients that underpin the world's agricultural systems and animal husbandry today [2].Phosphorus, a key nutrient element, is now facing a crisis of depletion.
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Aluminum (Al) toxicity and phosphorus (P) deficiency are widely recognized as major constraints to agricultural productivity in acidic soils. Under this scenario, the development of ryegrass plants with enhanced P use efficiency and Al resistance is a promising approach by which to maintain pasture production. In this study, we assessed …
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1 Southern Cross Plant Science, Southern Cross University, Lismore, NSW, Australia; 2 Southern Cross GeoScience, Southern Cross University, Lismore, NSW, Australia; 3 Stable Food Production Program, Japan International Research Center for Agricultural Sciences, Ibaraki, Japan; Given the non-renewable nature of global …
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(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 …
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Aims The readily available global rock phosphate (P) reserves may be depleted within the next 50–130 years warranting careful use of this finite resource. We develop a model that allows us to assess a range of P fertiliser and soil management strategies for Barley in order to find which one maximises plant P uptake under certain …
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Phosphorous and soil microorganisms. Phosphorus is an essential nutrient for plant growth and is a key component of DNA and cell. membranes (Richardson & Simpson, 2010). However, its availability ...
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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 …
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What is the Optimal Phosphate Level for Planted Aquariums? The phosphate level in a planted aquarium should be kept between 0.5 and 1.0 ppm (mg/L). Some phosphate is important …
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"The optimal concentration of KH2PO4 enhances nutrient uptake and flower production in rose plants" Monopotassium phosphate is a widely used phosphorus and potassium fertilizer for ornamental plants, but it is not known what concentration will result in optimal flower production, root growth, and nutrient uptake …
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Independent of the mentioned limitations and the different needs of individual plant species, the phosphorus concentration in plants ranges from 0.05 to 0.5% of plant …
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Sustaining an optimal concentration of phosphorus is vital for promoting healthy plant growth and development. On one hand, excessive accumulation of phosphorus can prove toxic, while on the other hand, inadequate supply can trigger a decline in photosynthesis and hinder various physiological processes.
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Compliance with the concentration limit shall be determined as a rolling 12 month average as deter-mined by the total phosphorus from all outfalls subject to the efflu-ent limitation for the most recent 12 months divided by the total flow for all those outfalls for the same period. 3. Effluent limitations for phosphorus equal to 1 mg/L as a
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The optimal N supply for plants grown with liquid organic fertilisers seems to be higher, with the highest yields being achieved with an organic N supply of approximately 390 and 260 mg L –1 for the ... Phosphorus nutrition has long been a focus in cannabis cultivation. ... The goal of this study was to determine the optimal …
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Phosphorus (P) has been an indispensable element of Earth's biological systems since the beginning of life 1,2 and it is a major limiting nutrient for plant growth and ecosystem development 3,4 ...
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This review focuses on improved P-use efficiency, which can be achieved by plants that have overall lower P concentrations, and by optimal distribution and redistribution of P in the plant allowing maximum …
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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 Kentucky …
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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, …
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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, …
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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 …
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Sustaining an optimal concentration of phosphorus is vital for promoting healthy plant growth and development. On one hand, excessive accumulation of …
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Limitation of plant productivity by phosphorus (P) supply is widespread and will probably increase in the future. ... The low concentration and poor mobility of plant-available phosphate ... Reducing P input and the soil-available P concentration required for optimal crop production will have both economic and environmental benefits. Fig. 1 ...
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We revisited peer-reviewed articles on plant growth characteristics that are phosphorus (P)-dependently regulated under the sufficient-P and low/no-P starvation …
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The combination of these two results in an approach called optimal functioning (OF), which has shown promise in explaining plant response to a changing environment ( McMurtrie et al., 2008; Mäkelä et al., 2008; Dewar et al., 2009; Franklin et al., 2009 ). By describing plant growth as a balance of growth and respiration processes, the …
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phosphate comprised from 4.8 to 7.8% of the total phosphorus in nine . lakes. Larger quantities of soluble organic phosphorus (12.5-31.7% of. the total phosphorus) were present. Most of the phosphorus . was con tained in seston. A similar situation is expected to exist in ponds.
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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 ...
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Acid phosphatase assay. Acid phosphatase activity was determined essentially according to the procedure of Campbell et al. by measuring the amount of p-nitrophenol (p-NP) released from the substrate p-nitrophenyl phosphate (p-NPP) disodium salt (Campbell et al. 1978).A test system containing 200 µl acetate buffer (pH 5.0, 200 …
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In this review, the focus is the potential of P removal by different aquatic plants which are divided into three main categories (free-floating, emergent and submerged, and algae). The role of plants, some influencing factors on P removal in wetlands such as temperature, HRT, and influent P concentration are discussed.
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In many agricultural systems in which the application of P to the soil is necessary to ensure plant productivity, the recovery of applied P by crop plants in a …
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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 …
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