| 000 | 00862nam a2200229Ia 4500 | ||
|---|---|---|---|
| 008 | 170101s1979 xx 000 0 und d | ||
| 082 | _aT 633.18 S48E | ||
| 100 | _aSingh, Hargopal | ||
| 245 | 0 | _aEvaluation of critical levels of zinc in soils for rice | |
| 260 |
_aLudhiana _bP.A.U _c1979 |
||
| 300 | _a29cm. : 83,8 | ||
| 520 | _aThe order of the various methods for extracting the amount of available Zn was: 005M EDT A >001M EDTA-(NH4)2C03>0.005M DTPA>double acid>soil solution Zn Stepwise multiple regression analysis indicated that DTPA, EDTA-(NH4)2C03 and EDTA available Zn largel | ||
| 650 | _aRICE - FERTILIZERS AND MANURES | ||
| 653 | _aCRITICAL LEVELS | ||
| 653 | _aRICE | ||
| 653 | _aRICE - FERTILIZERS AND MANURES | ||
| 653 | _aSOIL CHEMISTRY | ||
| 653 | _aSOILS | ||
| 653 | _aSOILS - ZINC CONTENT | ||
| 653 | _aZINC | ||
| 942 |
_2ddc _cT |
||
| 999 |
_c64878 _d64878 |
||