Abstract
Reliable tissue leaf standards for N, P, and K are available for corn, although standards for some other nutrients have not been well defined. Published ear leaf Mg sufficiency ranges are generally about 0.20 to 0.40% of dry leaf weight, critical values range from 0.15% to 0.25%, and the current standard most widely used with DRIS is 0.24%. However, in maximum yield studies, yields over 18 t/ha have been obtained with ear leaf Mg levels ranging from 0.13 to 0.18%. A field study was initiated to determine whether providing additional Mg to plants grown under ’maximum yield’ conditions would result in increased tissue Mg and yield, or whether optimum or sufficient Mg levels should be redefined. Ear leaf Mg was increased by foliar-applied Mg in two years of the study, and by soil-applied Mg in the third.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1457-1473 |
| Number of pages | 17 |
| Journal | Communications in Soil Science and Plant Analysis |
| Volume | 21 |
| Issue number | 13-16 |
| DOIs | |
| State | Published - Aug 1 1990 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Soil Science
- Agronomy and Crop Science
Cite this
A re-examination of optimum foliar magnesium levels in corn. / Walworth, James L; Ceccotti, S.
In: Communications in Soil Science and Plant Analysis, Vol. 21, No. 13-16, 01.08.1990, p. 1457-1473.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A re-examination of optimum foliar magnesium levels in corn
AU - Walworth, James L
AU - Ceccotti, S.
PY - 1990/8/1
Y1 - 1990/8/1
N2 - Reliable tissue leaf standards for N, P, and K are available for corn, although standards for some other nutrients have not been well defined. Published ear leaf Mg sufficiency ranges are generally about 0.20 to 0.40% of dry leaf weight, critical values range from 0.15% to 0.25%, and the current standard most widely used with DRIS is 0.24%. However, in maximum yield studies, yields over 18 t/ha have been obtained with ear leaf Mg levels ranging from 0.13 to 0.18%. A field study was initiated to determine whether providing additional Mg to plants grown under ’maximum yield’ conditions would result in increased tissue Mg and yield, or whether optimum or sufficient Mg levels should be redefined. Ear leaf Mg was increased by foliar-applied Mg in two years of the study, and by soil-applied Mg in the third.
AB - Reliable tissue leaf standards for N, P, and K are available for corn, although standards for some other nutrients have not been well defined. Published ear leaf Mg sufficiency ranges are generally about 0.20 to 0.40% of dry leaf weight, critical values range from 0.15% to 0.25%, and the current standard most widely used with DRIS is 0.24%. However, in maximum yield studies, yields over 18 t/ha have been obtained with ear leaf Mg levels ranging from 0.13 to 0.18%. A field study was initiated to determine whether providing additional Mg to plants grown under ’maximum yield’ conditions would result in increased tissue Mg and yield, or whether optimum or sufficient Mg levels should be redefined. Ear leaf Mg was increased by foliar-applied Mg in two years of the study, and by soil-applied Mg in the third.
UR - http://www.scopus.com/inward/record.url?scp=84951388971&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84951388971&partnerID=8YFLogxK
U2 - 10.1080/00103629009368316
DO - 10.1080/00103629009368316
M3 - Article
VL - 21
SP - 1457
EP - 1473
JO - Communications in Soil Science and Plant Analysis
JF - Communications in Soil Science and Plant Analysis
SN - 0010-3624
IS - 13-16
ER -