Premium
Relationships Between Dry Matter Yields and Concentrations of Zn and P in Young Corn Plants 1
Author(s) -
Terman G. L.,
Giordano P. M.,
Allen S. E.
Publication year - 1972
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1972.00021962006400050040x
Subject(s) - forage , dry matter , limiting , agronomy , nutrient , greenhouse , chemistry , zea mays , zinc , yield (engineering) , plant growth , zoology , biology , materials science , mechanical engineering , organic chemistry , metallurgy , engineering
Yield‐Zn or P concentration relationships were studied in corn ( Zea mays L.) grown in several greenhouse pot experiments conducted to compare various rates and sources of Zn and P on soils deficient in these nutrients, Such relationships are important in proper interpretation of plant analysis results. The usual result was for corn forage yields to increase at a minimum Zn concentration of 7 to 9 ppm in the dry forage until P or other growth factor became limiting. Then yields leveled off and Zn concentrations increased at sufficiently high levels of applied Zn. Similarly, yields increased at a minimum P concentration near 0.10% until Zn or other growth factor became limiting; P concentrations then increased. Critical concentrations in the dry corn forage were estimated to be about 14 ppm of Zn and 0.14% P.