| 000 | 00891nam a2200229Ia 4500 | ||
|---|---|---|---|
| 008 | 170101s1978 xx 000 0 und d | ||
| 082 | _aT 631.83 A81E | ||
| 100 | _aAshwani Kumar | ||
| 245 | 0 | _aEffect of phosphorus and potassium on the availability of zinc in a long term fertilizer experiments | |
| 250 | _aPAU | ||
| 260 |
_aLudhiana _bPAU _c1978 |
||
| 300 | _a29cm. 97+11L | ||
| 520 | _aContinuous application of P fertilizers during the six cycles of crop rotation, the initial low P status of the soil raised to high status at all rates of phosphatic fertilizers Relationship between available P and availab'~ K with total P & K applied dur | ||
| 650 | _aSOILS -- ZINC CONTENT | ||
| 653 | _aMAIZE - ZINC | ||
| 653 | _aPHOSPHORUS & POTASSIUM | ||
| 653 | _aSOIL FERTILITY | ||
| 653 | _aSOIL SCIENCE | ||
| 653 | _aSOILS | ||
| 653 | _aSOILS -- ZINC CONTENT | ||
| 942 |
_2ddc _cT |
||
| 999 |
_c64664 _d64664 |
||