Premium
Response of Corn to Zinc as Affected by Nitrogen and Phosphorus Fertilizers
Author(s) -
Terman G. L.,
Allen S. E.,
Bradford B. N.
Publication year - 1966
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1966.03615995003000010038x
Subject(s) - loam , chemistry , zinc , phosphate , phosphorus , ammonium sulfate , agronomy , soil water , ammonium , forage , ammonium polyphosphate , sulfate , zoology , soil science , environmental science , biochemistry , raw material , organic chemistry , chromatography , biology
Response of 2 successive crops of corn ( Zea mays L.) forage to fine zinc sulfate mixed with 2 soils was measured in greenhouse pot experiments. Zinc sulfate was also incorporated into −9 + 16‐mesh granules of each of four phosphates, ammonium nitrate (AN), and ammonium sulfate (AS) fertilizers. Large amounts of fine dicalcium phosphate (DCP), concentrated superphosphate (CSP), monoammonium phosphate (MAP), and ammonium polyphosphate (APP) depressed the pH of Hartsells fine sandy loam (limed to pH 7.1) increasingly in the order listed. Depression in soil pH was closely related to response of corn to 6 and 12 mg of applied Zn per pot (2 and 4 ppm of Zn). In Nolichucky sandy clay loam (pH 7.3) and Hartsells soil limed heavily to pH 8.0, soil pH remained high and response to Zn with the APP, MAP, and CSP sources of P was similar and greater than with DCP. Forage yields and uptake of Zn were in the order: Zn mixed alone with the soil > Zn in AN or AS granules > Zn in phosphate granules > no applied Zn. Results with Zn in DCP granules were poorest. Reciprocal Relationships between concentrations of P and Zn in the corn were largely related to yield levels dependent on sufficiency of Zn.