Phosphorus Dynamics
Short-term phosphorus dynamics and wheat productivity under integrated fertiliser management
... rock-derived phosphorus (P) while recapturing P that would otherwise be lost from the system (Nemecek et ...soil phosphorus dynamics and wheat productivity in an arable ...
265
Phosphorus Dynamics in Potato Plants
... The relationship between the average total P concentration of potato tops and the ratio of the change in the P content of the whole plant divided by the change in the P content of the tu[r] ...
11
Nitrogen and Phosphorus Dynamics in the Shallow Lake Agmon (Hula Valley, Israel)
... The study of the submerged and emerged vegetation recorded 10 species of high plants and filamentous algae. Submerge: Potamogeton spp. Ceratophyllum, and Najas spp. Emerge: Phragmites sp., Typha sp. The total bio- mass ...
11
Impacts of fertilizer application rates on phosphorus dynamics in salt-affected soil
... Effect on soil total P. Figure 1 shows that after 24 years, TP decreased significantly. The content of TP in CK, N 1 and N 2 treatments decreased from 1.32–1.35 g/kg in 1985 to 0.45–0.55 g/kg in 0–20 cm layer in 2007. ...
7
Phosphorus Dynamics and Rice Yield Response to Different Fertilization in Acid Soils
... Although in Brunei Darussalam the major staple is rice; about 95% of domestic rice consumption is imported. The self-sufficiency level is yet at 5% [18]. Realizing the necessity of self sufficiency from national food ...
13
Comparison of four models simulating phosphorus dynamics in Lake Vänern, Sweden
... the phosphorus cycle; dissolved phosphorus, particulate phosphorus and phytoplankton (Håkanson, ...particulate phosphorus, were included and Dahl (2004) modified the model for Lake Vänern, ...
11
The Impact of Nitrogen and Phosphorus Dynamics on the Kinneret Phytoplankton: I: Cyanophytes Peridinium Alternate
... The importance and indirect effects of TN, TP, and phytoplankton relations to other factors in the Kinneret food web are exemplified in the case study of unwanted fish removal. The ecological parameter of Zooplankton ...
17
DRAINMOD-P: A Model for Simulating Phosphorus Dynamics and Transport in Artificially Drained Agricultural Lands.
... Macropores are critical pathways through which water and pollutants can bypass portions of soil matrix and take the least-resistant pathways to subsurface drains and out to fresh water bodies. We modified the DRAINMOD ...
254
The Impact of Nitrogen and Phosphorus Dynamics on the Kinneret Phytoplankton: II: Chlorophyta, Cyanophyta, Diatoms and Peridinium
... of phosphorus are partly external (dust deposition and through water migration) and partly internal as microbial activity on sediments substrate and P mediated Peridinium cysts mineralization of the unlimited ...
16
Phosphorus Dynamics from Broiler Breeder Diets in Manure, Soil, and Corn.
... reduce phosphorus (P) excretion have evaluated bird performance, but no studies have quantified the effects of P in the manure and the impacts to soil and plant availability once ...P. Phosphorus-based ...
194
Phosphorus dynamics in the Barents Sea
... In order to utilize DOP which is not readily available for assimilation, microbes hydrolyse P from the organic moiety prior to uptake, and this is usually induced by the ecto- enzyme alkaline phosphatase (AP). Thus, ...
17
Soil phosphorus dynamics and bioavailability in New Zealand forest ecosystems
... grassland and forest were smaller and not significant for older forests. These findings suggest that as forest development proceeds through the first rotation organic matter inputs from trees increase with time leading ...
131
Phosphorus dynamics in a North Carolina Piedmont reservoir
... From March on, however, they became a source, releasing phosphate to the water and therefore to the growing phytoplankton populations (Figure 9 ). Phosphorus may c[r] ...
68
Soil phosphorus dynamics under sprinkler and furrow irrigation
... Furrow irrigation detaches and transports soil particles and subsequently nutrients such as phosphorus (P). To reduce the risk of erosion and offsite P movement, producers can convert from furrow to sprinkler ...
5
A leaky model of long-term soil phosphorus dynamics
... P dynamics in noneroding landscapes, we re-evaluate and develop the long-term, large-scale soil P model of Porder et ...the dynamics of soil apatite and by supplementing the published soil chronosequence ...
10
Organic Waste Nitrogen and Phosphorus Dynamics Under Dryland Agroecosystems
... N dynamics, we utilized research results collected between 1993 and 2004 from a site in Eastern Colorado which received 0, 1, 2, 3, 4, and 5 dry tons biosolids A -1 ...
6
Phosphorus dynamics in a tropical forest soil restored after strip mining
... P dynamics in ecosystems re- stored on highly weathered soil materials is limited, and it is therefore of considerable theoretical and management interest to understand the changing sta- tus and fractional ...
19
Relationship between phosphorus concentration in soil solution and phosphorus in shoots of barley
... adequate phosphorus concentra- tion in soil solution for the needs of innovation and correction of criteria of phosphorus reserve in soils both from agronomic and environmental ...
8
Organic phosphorus source effects on calcareous soil phosphorus and organic carbon
... The 1997 bicarbonate extractable ortho-P (STP) concentrations for all subsoil (solid symbols) and all topsoil (open symbols) samples as related to the soil organic carbon (OC) concentrat[r] ...
6
Influence of Phosphorus Release and Initial Nitrate Concentration on Anoxic Phosphorus Uptake
... experiment, the sludge rich in PAO and DPAO was fully taken up phosphorus in anoxic zone. In order to ensure its sufficient storage of polyphosphate, a post-aerobic phase in the A 2 N process followed the anoxic ...
5