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김문철,김동암,정창조,송성준 제주대학교 농과대학 제주도축산문제연구소 1991 畜産論叢 Vol.6 No.1
An experiment was carried out to find out the effect of fused-P and rock-P applications to mixed pasture species (orchardgrass ; Dactylis glomerafa, and ladino clover; Trifolium refiens) grown in Cheju volcanic ash soils Back soil when compared with very dark brown soil. is generally lower in available phosphorous Phosphorus uptake in pasture species lowers its dry matter yield. In the case of carrier free, phosphonis application increased dry matter yield more than no phosphorus, while carrier was treated(0.5 mole KH_(2)PO^(4)) there was no dif-ference in the dry matt,er yield and available phosphorus between no P and P applications. When applied to pastures. fused-P compared with rock-P gave higher dry matter yields and increased P-uptake.
Hackman Jacob,Ozyhar Tomasz,Chien S. H.,Hilty Florentine,Woodley Alex,Cook Rachel L. 한국산림과학회 2022 Forest Science And Technology Vol.18 No.3
Synthetic hydroxyapatite (HA) was compared against triple superphosphate (TSP) and two unprocessed phosphate rocks (PR1, PR2) to (1) quantify and assess a synthetic lamellar struc- tured-HA for its solubility and diffusiveness under acidic, sandy, soil conditions, (2) Evaluate synthetic lamellar structured-HA as a phosphorus early rotation fertilizer for Eucalyptus sap- lings. Soil incubation experiments verified that HA released more diffusive phosphorus into the soil than non-synthetic phosphate rock and had similar amounts of diffusive phosphorus as TSP. The solubility of HA at pH 3 and pH 6 was higher than that of raw ground phos- phate rocks (apatites). Total dry-matter yield (DMY) and shoot-length of Eucalyptus seedlings grown for 154 days in acid soil (pH 4.9) were increased significantly by the application of HA compared to the control, PR2, and mixed (HA þ PR2). The lack of a DMY response using TSP indicates that phosphorus may not have been the limiting factor. However, considering TSP and HA had similar solubilities and released diffusive phosphorus at similar levels, the only variable we failed to control for was the CaCO3 provided by the HA and not the TSP. Further experimentation is needed to confirm this hypothesis. Overall, HA is a promising candidate to supplement traditional phosphorus fertilizers for acidic sandy Eucalyptus silviculture.
Establishment of Phosphorus Flow Model in Urban Area using Material Flow Analysis
Lee, Mina,Kim, Kye-Hoon 한국토양비료학회 2014 한국토양비료학회지 Vol.47 No.2
Phosphorus (P) is an essential nutrient for all living organisms. P is mostly obtained from mined rock phosphate. However, existing rock phosphate reserves could be exhausted in the next 50-100 years. As Korea is totally dependent on imported rock phosphate, we should seek for solution to overcome the P depletion by efficient use and recycling. For this, this study suggested a P flow model to identify the location and flow route of P in urban area based on traditional material flow analysis. The type of P entering the urban areas are fertilizer, food and feed. Each type of P is used in agriculture, human consumption and animal husbandry. After going through each process, P is moved to waste management facilities within food waste, excreta and sewage. Some portion of P in waste are buried, incinerated and discharged, which can be reservoir of P in the future.
Establishment of Phosphorus Flow Model in Urban Area using Material Flow Analysis
Mina Lee,Kye-Hoon Kim 한국토양비료학회 2014 한국토양비료학회지 Vol.47 No.2
Phosphorus (P) is an essential nutrient for all living organisms. P is mostly obtained from mined rock phosphate. However, existing rock phosphate reserves could be exhausted in the next 50?100 years. As Korea is totally dependent on imported rock phosphate, we should seek for solution to overcome the P depletion by efficient use and recycling. For this, this study suggested a P flow model to identify the location and flow route of P in urban area based on traditional material flow analysis. The type of P entering the urban areas are fertilizer, food and feed. Each type of P is used in agriculture, human consumption and animal husbandry. After going through each process, P is moved to waste management facilities within food waste, excreta and sewage. Some portion of P in waste are buried, incinerated and discharged, which can be reservoir of P in the future.
Establishment of Phosphorus Flow Model in Urban Area using Material Flow Analysis
이미나,김계훈 한국토양비료학회 2014 한국토양비료학회지 Vol.47 No.2
Phosphorus (P) is an essential nutrient for all living organisms. P is mostly obtained from mined rockphosphate. However, existing rock phosphate reserves could be exhausted in the next 50‐100 years. As Koreais totally dependent on imported rock phosphate, we should seek for solution to overcome the P depletion byefficient use and recycling. For this, this study suggested a P flow model to identify the location and flow routeof P in urban area based on traditional material flow analysis. The type of P entering the urban areas arefertilizer, food and feed. Each type of P is used in agriculture, human consumption and animal husbandry. After going through each process, P is moved to waste management facilities within food waste, excreta andsewage. Some portion of P in waste are buried, incinerated and discharged, which can be reservoir of P in thefuture.