Economic Evaluation of Production Methods for Sweet Corn in a Cool Climate

摘要: The use of plastic mulch offers an economically profitable approach for producing sweet corn (Zea mays L.) in Newfoundland (Canada) because its warming effect on the soil and air around emerging plants late spring. Information combined planting dates is needed to develop a base future research on-farm maximum economic yield demonstration programs. Studies were conducted from May mid-October 2001, 2002, 2003 determine effects mulching days maturity (DH), total marketable (TMY) value (gross returns, GR; net NR; production efficiency, PE-a measure output/input ratio) corn. experiment was structured as split plot design randomized complete block arrangement three replicates. main treatment mulching: (PM) no (NM), subplot treatments dates: 1, 15 29 May, abbreviated PD1, PD2, PD3, respectively. For each mulch-planting date treatment, matured ears hand harvested sold over 3 wk period. There year measured variables. Planting had significant DH, TMY GR. When averaged across dates, PM decreased DH by 10 d. Mulching all variables, except TMY. However, high premium price obtained early with more than offset extra cost using mulch. beneficial GR consistent dates. With PM, favorable response at PD1 PD2 or PD3 but NM, higher similar PD3. increased NR > $3,000.00 (Canadian) . ha - 1 NM PE 5.37 compared 4.94 NM. study confirmed tool reduce risk potential increase profitability Newfoundland.