Sweet Corn Growth Responses and Leaf Concentrations as Affected by Lime Types and Fertilizer Treatments in a Five-year Study
Year: 1984
Type: article
Abstract: A 5-year sweet corn nutrition experiment involving 4 lime treatments, 14 fertilizer treatments, and 2 hybrids was conducted on Hagerstown silt loam which had an initial pH of 5.2. Calcitic, calcitic with 3% Mg and dolomitic (12% Mg) limes applied during the 1st and 3rd years at 4.5 MT/ha increased vigor, yield, percentage of marketable ears, leaf N, leaf P and decreased leaf Mn and Zn. Calcitic lime increased leaf Ca and Mg by 21% and 31%, respectively. Dolomitic lime more than doubled leaf Mg but did not affect leaf Ca. Dolomitic lime increased leaf Mg by 55% 60 days after application. The best fertilizer responses were obtained with 56 kg/ha each of N and P banded for ‘Northern Belle’, with 112 kg/ha of N (75% broadcast, 25% banded), and 56 kg/ha P banded for ‘Deep Gold’. These treatments increased yields (by 36% and 60%, respectively, compared to the check), plant height, ear size and weight, and hastened maturity by 5 days. Additions of K or Mg did not improve the response. Height and yield were reduced and maturity was delayed when Ca (NO 3 ) 2 rather than NH 4 NO 3 was used as the N source. Leaf Ca, Mg, and Mn were lower with Ca (NO 3 ) 2 than with NH 4 NO 3 and urea sources, but leaf N, P, Mn, Cu and Zn increased with the urea source. Leaf Ca and Mg were enhanced by NH 4 NO 3 , Ca (NO 3 ) 2 , and urea, and depressed by KC1.
Author: Cyril B. Smith
Institution: Pennsylvania State University
Language: English
Subfield: Agronomy and Crop Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: hybrid
Estimated APC paid: $3,500
OpenAlex ID: W2525599299