engleski

Response of corn hybrids to liming

Ten corn hybrids were grown under field conditions on acid soil (pH in 1n KCl = 4.279) in four replicates near Djakovo in 1993. Fertilization treatments (experimental plot 352 m2) were the following: a) control and b) control + liming with 15 t ha-1 sludge from Osijek sugar factory containing 37% CaO. The hybrids OsSK262, OsSK218, OsSK377 and OsSK553 (mean yield 5.54 t ha-1) can be classified as less tolerant, while the hybrids OsSK382, OsSK552 and OsSK644 (7.66 t ha-1) tolerant for growing on acid soils. Grain yield increases affected by liming ranged from 6% (OsSK382) to 45% (OsSK502).

corn; yield; liming; ear-leaf composition; nitrogen; phosphorus; potassium; calcium; zinc

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