Cost Comparisons for Infield, Above Ground Container and Pot-in-Pot Production Systems
Abstract A relatively new production system, Pot-in-Pot (PNP), offers many of the advantages of in-field (IF) and above-ground container (AGC) nursery production methods. Our objective was to compare their fixed and production costs. Hypothetical nurseries for the three production systems were synthesized to represent a 6 ha (15 A) nursery utilizing a 4 ha (10 A) production area to grow crapemyrtle (Lagerstroemia indica) over three years. Fixed costs were similar for IF and AGC systems at $350,000 with PNP system outlays $25,000 higher, largely due to socket pot cost. Total production costs for the three-year production cycle were similar for AGC and PNP at $500,000. The IF system was $50,000 less costly. Yet, on a per harvested plant basis, total cost was lowest for the PNP system ($21.52), compared to costs for the IF ($23.73) and AGC ($23.17). The PNP system had the highest total capital outlay and fixed cost, which related primarily to higher costs associated with purchasing and installing socket pots. The PNP system, however, was least costly on a per harvested plant basis due to less intensive, labor-saving cultural practices and the ability to grow larger plants quickly.