COMPARISON OF BROILER LITTER AND INORGANIC NITROGEN, PHOSPHORUS, AND POTASSIUM FOR DOUBLE-CROPPED SWEET CORN AND BROCCOLI

Two rates of broiler litter (20 and 40 mt/ha) were compared to recomme nded rates of inorganic nitrogen (N), phosphorus (P), and potassium (K ) in a double cropping system of spring sweet corn (Zea mays L. 'Silve rqueen') and fall broccoli (Brassica oleracea L.'Southern Comet'). Swe et corn matured one week earlier both years when fertilized with 40 mt /ha of broiler litter compared to commercial fertilizer. The early mat urity may be due to improved P nutrition. Similar or higher yields of fall broccoli were produced with broiler litter following sweet corn t han with commercial fertilizer.