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| Titel: |
Use of routine soil tests in predicting corn leaf zinc |
| Auteur: |
Bezdicek, D. F. Pietz, R. I. MacGregor, J. M. |
| Verschenen in: |
Communications in soil science and plant analysis |
| Paginering: | Jaargang 4 (1973) nr. 2 pagina's 105-119 |
| Jaar: |
1973 |
| Inhoud: |
Zinc of index corn leaves samples from 91 Minnesota sites on numerous soil types was correlated with soil Zn extracted by four routine procedures. The EDTA•(NH4)2CO3 - extractable soil Zn was more closely correlated with leaf Zn than soil zinc extracted by 0.1N HCl, EDTA-NH4OAc, or by NH4OAc - dithizone. Soil pH, CaCO3 equivalent, extractable P, and organic matter of both acid and calcareous soils were negatively correlated with leaf Zn. When EDTA • (NH4)2CO3 - extractable Zn was included with routine soil tests, a prediction equation for corn leaf Zn was formulated and compared with analytical values. However, the use of 1.4 ppm EDTA • (NH3)2CO3, - extractable soil Zn alone as a critical value was equally effective in predicting leaf Zn. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 160 van 164 gevonden artikelen
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