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• W2209462026 abstract "The goal of this initial three-year project was to establish the pawpaw trees and bring them to fruiting stage. This was part of a long-term effort to evaluate the potential for an Iowa pawpaw tree fruit crop. Background Approach and methods The pawpaw is the largest tree fruit native to Sixteen different plant and environmental the United States. The fruit, known as the measurements must be made yearly for each “poor man’s banana,” may weigh up to 1 kg. tree. Among them are climate, culture, disThe small, deciduous pawpaw trees are found eases, growth, blossoms, yield, and fruit. The in the wild in 25 states in the eastern United results are sent to the Pawpaw Regional Trial States, including parts of Iowa. data analysis coordinator. Most of the mea­ surements are easily made and will be colFruit set in the wild is usually low, but under lected when the trees begin flowering. Flavor cultivation tremendous fruit loads have been is the quality that is most difficult to quantify observed. The principal investigator has noted objectively and may require cooperators from an apparent genetically diverse (i.e., wild) other states to conduct the evaluations. pawpaw population near the Iowa River in Louisa County that has consistently produced fruit. Pawpaw trees have ornamental value and adapt to varying light conditions, increasing their possible value to the nursery and landscape industries. The seeds and stem bark of the pawpaw contain asimicin, which has some pesticidal and anti-carcinogenic properties. Pawpaw trees also may possess some agro­ forestry and wildlife benefits, perhaps as habi­ tat or food for wildlife. The long-term project objective is to demon­ strate a potentially profitable agriculture en­ terprise as an alternative to conventional farm­ ing. Project investigators seek to evaluate the potential of pawpaw fruit for commercial pro­ duction in Iowa and the upper Midwest. The first three years of the project involved estab­ lishment of the trees at 14 sites (including two in Iowa) as part of the Pawpaw Regional Variety Trials. COMPETITIVE GRANT REPORT Principal Investigator: Patrick O’Malley Johnson County Extension Iowa City Co-investigator: Lois Hunt Southeast Iowa Area Extension Ottumwa Budget: $3,385 for year one $1,100 for year two $515 for year three Wild pawpaw fruit on the tree Leopold Center Progress Reports 9 This project has shown that pawpaws can be successfully estab­ lished to flowering stage under Iowa growing conditions. It also has shown that proper technique in planting is essential for high establishment rates. Further evalua­ tion will determine yield and fruit quality characteristics of the different varieties and accessions. Pawpaw tree (asimina triloba) growing wild in Louisa County, Iowa Three hundred trees were planted, including nine genotypes each from the Wye Experi­ ment Station and the Keedysville Experiment Station as well as ten named cultivars. Trees were planted on Chinkapin Ridge in spring 1999. The Northeast Research Farm (NERF, located in Butler County) trees were planted in June 2000. The general intent was to test cultivars under a simple management regime with a minimum level of inputs. The intent was to establish healthy, representative trees that will subse­ quently be rated for fruit-bearing potential. Results and discussion The guard row trees (planted around the or­ chard perimeter) had a 78 percent survival rate, while the grafted trees had a 69 percent survival rate. Overall, 71 percent of the trees have survived. Nearly 8 percent of these are showing obvious flower buds. The guard row trees are slightly taller on average (4 feet) than the grafted trees (3.5 feet). All 20 trees at the NERF site survived. Their average height is 28 inches." @default.
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• W2209462026 date "2003-01-01" @default.
• W2209462026 modified "2023-09-27" @default.
• W2209462026 title "Iowa location of regional pawpaw trials" @default.
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