Nutrition of corn (Zea mays L. ) on a calcareous soil. III. Interaction of zinc and boron with plant population and the relationship between grain yield and leaf composition

Journal Article · Sat Jan 01 00:00:00 EST 1966 · Soil Sci. Soc. Am., Proc.; (United States)

DOI:https://doi.org/10.2136/sssaj1966.03615995003000040027x· OSTI ID:5119984

Fuehring, H D

A field experiment on corn with N, Zn, Mn, B and plant population as variables resulted in important positive interactions of plant population with applied Zn and with applied B indicating that limited Zn or B may be part of the reason for the severe yield decrease resulting from planting corn too thickly. High rates of applied Zn or B (90-180 kg/ha) were depressing to grain yield at low plant populations (40,000-53,333 plants/ha) but increased yields at high plant populations (80,000-93,333 plants/ha). The logarithm of the nitrate-N concentration of the midrib of the sixth corn leaf at the silking stage was found to be closely correlated with grain yield up to about 1000 ppm. The relationship between the total N concentration of the leaf blades and grain yield was less distinct. The phosphate-P concentration of the midrib and the total P concentration of the leaf blades were significantly increased by increasing applications of N. The B concentration of midribs at the point of maximum yield varied from < 60 ppm at low plant population to 120 ppm at high plant population.

• Research Organization: Univ. of Beirut, Lebanon
• OSTI ID: 5119984
• Journal Information: Soil Sci. Soc. Am., Proc.; (United States), Vol. 30
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BORON
BIOLOGICAL EFFECTS
MAIZE
NUTRITION
ZINC
CHEMICAL COMPOSITION
CORRELATIONS
CULTIVATION TECHNIQUES
LEAVES
MANGANESE
NITROGEN
PHOSPHATES
PHOSPHORUS
PRODUCTIVITY
CEREALS
ELEMENTS
GRASS
METALS
NONMETALS
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PLANTS
SEMIMETALS
TRANSITION ELEMENTS
560303* - Chemicals Metabolism &amp; Toxicology- Plants- (-1987)