| 000 | 01541nab a22003497a 4500 | ||
|---|---|---|---|
| 001 | G49860 | ||
| 003 | MX-TxCIM | ||
| 008 | 121211b |||p||p||||||| |z||| | | ||
| 040 | _aMX-TxCIM | ||
| 041 | 0 | _aEn | |
| 043 | _aNL | ||
| 072 | 0 | _aF22 | |
| 072 | 0 | _aF25 | |
| 082 | 0 | 4 | _a82-765314|81-686006 |
| 100 | 1 | _aHammond, L.L. | |
| 245 | 0 | 0 | _aPhosphorus availability from partial acidulation of two phosphate rocks |
| 260 | _c1980 | ||
| 340 | _aPrinted | ||
| 500 | _a17 ref.; Summary (En) | ||
| 520 | _aTwo phosphate rocks, one from Pesca (Colombia) and the other from Togo, were acidulated to various degrees with H('2)SO('4) and H('3)PO('4) for evaluation in varyinggranule size ranges. Products acidulated with H('2)SO('4) were also prepared using different drying temperatures. Phosphorus availability was measured by dry-matter yield and P uptake in greenhouse experiments with maize. It was observed that partial acidulation with H('2)SO('4) was effective in increasing the water-soluble P level of phosphate rock when the drying temperature of the productwas not excessive. Crop response and P uptake were both highly correlated to the water | ||
| 546 | _aEnglish | ||
| 591 | _aCOMOD | ||
| 595 | _aAC | ||
| 650 | 1 | 7 |
_aFertilizers _gAGROVOC _2 _91111 |
| 650 | 1 | 0 | _aPhosphate fertilizers |
| 650 | 1 | 0 | _aSoil chemistry and physics |
| 650 | 1 | 0 |
_91952 _aSoil fertility _gAGROVOC |
| 700 | 1 |
_aChien, S.H., _ecoaut. |
|
| 700 | 1 |
_aPolo, J.R., _ecoaut. |
|
| 773 | 0 |
_tFertilizer Research _n82-765314 _gv. 1, no. 1, p. 37-49 |
|
| 942 | _cJA | ||
| 999 |
_c14582 _d14582 |
||