The application of manure (M) and straw (S) will increase the Olsen P phosphorus activation coefficient (PAC) in soil. Clarifying increasing trend PAC is crucial for rational fertilization. This study fitted equation between accumulated surplus, P, four treatments 28 years analyzed changes rates fractions. results showed linearly with NPK NPKS treatments; every 100 kg ha−1 increased by 5.9 6.7 ...

A new soil extractant (HA) with the ability to extract NH4, NO3, and P from soil was developed and tested against 32 soils, which varied greatly in clay content, organic carbon (C), and soil pH. The extractant (HA) eliminates the need for separate phosphorus (P) extractants for acid and calcareous soils and maintains the extract pH, on average, within one unit of the soil pH. The extractant is ...

Di Florio, Arianna, Putnam, K., Altemus, M., Apter, G., Bergink, V., Bilszta, J., Brock, R., Buist, A., Deligiannidis, K. M., Devouche, E., Epperson, C. N., Guille, C., Kim, D., Lichtenstein, P., Magnusson, P. K. E., Martinez, P., Munk-Olsen, T., Newport, J., Payne, J., Penninx, B. W., O'Hara, M., Robertson-Blackmore, E., Roza, S. J., Sharkey, K. M., Stuart, S., Tiemeier, H., Viktorin, A., Schm...

Information on P release potential in relation to labile P and P fractions in sandy soils is limited. In this study, P release potential was determined by leaching, and labile P, soil P fractionation, and P adsorption capacity were measured in the laboratory using 96 Florida sandy soil samples to evaluate the relationship between P release in water and soil P status. The sandy soils had a very ...

A better understanding of the P dynamic resupply roles fertilization from soil solids to solution is urgently required optimize sustainable fertilizer management practices for efficient supply. five–year experiment was used investigate effects on fractions and availability, kinetic based a novel simulation technique (Diffusive gradients in thin films (DGT) DGT–induced fluxes sediments soils (DI...

Harpole LH, Williams JW, Olsen MK, et al. Improving depression outcomes in older adults with comorbid medical illness. Gen Hosp Psychiatry 2005;27:4–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...