TB122: Comparison of Alpha- and Beta-Carotene Content of Supermarket vs Roadside Stand Produce in Maine

A study was conducted to determine the alpha- and beta-carotene content of supermarket vs roadside stand produce using high-performance liquid chromatography (HPLC). The fruits and vegetables were obtained from a major local supermarket chain and three roadside stands in Dixmont, Etna and Charleston, ME. Thirteen vegetables and one fruit were sampled during a ten-week period between July and September of 1985. Significant differences at the 0.05 level were observed between supermarket and roadside stand produce for only Swiss chard and green peppers with roadside stands having higher beta-carotene levels in both instances. Alpha-carotene was shown to be nonsignificant among sources at the 0.05 level in all cases.https://digitalcommons.library.umaine.edu/aes_techbulletin/1082/thumbnail.jp

TB115: Growth and Development of the Colorado Potato Beetle, Leptinotarsa decemlineata (Coleoptera: Chrysomelidae), Fed Foliage of Three Solanum Species

The purpose of this study was to compare growth and development of CPB larvae fed Solanum chacoense and Solanum demissum with those reared on S. tuberosum.https://digitalcommons.library.umaine.edu/aes_techbulletin/1075/thumbnail.jp

Blueberry Research Progress Reports

The 1989 edition of the Blueberry Research Progress Reports was prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers with the Maine Agricultural Experiment Station and Maine Cooperative Extension Service at the University of Maine, Orono. Projects in this report include: 1. Control of Secondary Blueberry Pests 2. Monitory Methods, Economic Injury Levels, and Action Thresholds of Secondary Blueberry Pests 3. Control of Blueberry Maggot 4. Phosphorus Dose/Response Curve 5. Nitrogen-Phosphorus Study 6. Multiple Cropping of Wild Stands 7. Changes in Sugars and Organic Acids of Blueberries During Development 8. Investigation of Preprocess Changes That Could Lead to the Development of a Simple and Inexpensive Method to Measure Preprocess Berry Spoilage 9. Development of Simple and Less Expensive Methods to Analyze Pesticides Used on Maine and Canadian Blueberries 10. Evaluation and Modification of Commercial Wipers 11. Effect of Rate and Formulation of Hexazinone on Bunchberry 12. Bracken Fern Control Alternatives 13. Evaluation of Hexazinone with Spot Treatments of Glyphosate Sethoxydim or Fluazifop-P for Bunchgrass Control 14. Directed Sprays of Glyphosate for Bunchberry Control 15. Evaluation of Norflurazon with or without Hexazinone for Bunchgrass Control 16. Selective Wiper and Mechanical Control of Dogbane 17. Evaluation of Sulfonyl Urea Herbicides for Bunchberry Control 18. Seedling Pruning Study 19. Evaluation of Sethoxydim in Lowbush Blueberry Fields 20. Blueberry Extension Program 21. Pollination of the Low-bush Blueberry by Native Bees 22. Postharvest Fungi of Lowbush Blueberries 23. Effects of Pruning Methods on Mummy Berry Incidenc

Blueberry Advisory Committee Research Report

The 1988 edition of the Blueberry Advisory Committee Research Reports was prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers with the Maine Agricultural Experiment Station and Maine Cooperative Extension Service at the University of Maine, Orono. Projects in this report include: 1. Monitoring methods, economic injury levels, and action thresholds for blueberry spanworm larvae in vegetative year fields. 2. Control of secondary blueberry pests 3. Control of blueberry maggot 4. Effect of pruning practices on blueberry insect abundance 5. Survey of Fungi Contaminating Lowbush Blueberries 6. Nutrition Survey 1988 7. Phosphorus Dose/Response Curve 8. Effect of Several Mulches on Frost Heaving, Soil Moisture, Soil Temperature and Rhizome Development 9. Influence of Mulch Sources on Clonal Spread-SCS Study, Deblois 10. Effect of Surface Mulches on Stabilizing Lowbush Blueberry Soil in Barren Areas 11. Nitrogen-Phosphorus Study 12. Changes in Sugar and Organic Acids of Blueberries During Development, Preprocess Lag Time and Storage 13. Characterization of Pectin in Blueberries 14. Effect of Hexazinone (VELPAR) on Species Distribution in Lowbush Blueberry Fields 15. Evaluation of Setyhoxydim (POAST) for Bunchgrass Control 16. Evaluation and modification of commercial wipers 17. Evaluation of Five Preemergence Herbicides for Control of Oatgrass and Bunchgrass 18. Effect of rate and formulation of hexazinone (VELPAR) on bunchberry 19. Bracken fern control alternatives 20. Hexazinone (VELPAR) and terbacil (SINBAR) combinations for weed control 21. Evaluation of hexazinone (VELPAR) with spot treatments of glyphosate (ROUNDUP) or sethoxydin (POAST) for bunchgrass control 22. Directed sprays of glyphosate (ROUNDUP) for bunchberry control. 23. Evaluation of Postemergence Applications of Chlorimuron for Bunchberry Control 24. Seedling Pruning Study 25. Blueberry Harvester Trials 26. Blueberry Extension Progra

Maine Blueberry Advisory Committee Research Report

The 1990 edition of the Maine Blueberry Advisory Committee Research Reports was prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers with the Maine Agricultural Experiment Station and Maine Cooperative Extension Service at the University of Maine, Orono. Projects in this report include: 1. Biology and action thresholds of secondary blueberry pests 2. Control of blueberry maggot 3. Control of secondary blueberry pests 4. Application of steam as a method of controlling secondary pest insects on lowbush blueberry: a feasibility study 5. Pollination of the lowbush blueberry by native bees 6. Nitrogen-phosphorus study 7. Potassium study 8. Multiple cropping of wild stands 9. Phosphorus dose/response curve 10. Improvement in the color and texture of the canned blueberry 11. The effect of fertilization and irrigation on blueberry fruit quality 12. Investigation of preprocess changes (chemical, microbiological, and/or physical) that could lead to the development of a simple and inexpensive method to measure preprocess berry spoilage 13. The effect of postharvest handling on the dietary fiber and ellagic acid content of lowbush blueberries 14. Determination of pesticide residue levels in freshly harvested and processed lowbush blueberries 15. Evaluation of Defoliating Diseases 16. Vacuum Sanitation for Disease Control 17. Evaluation and modification of commercial herbicide applications 18. Evaluation of the suitability of remote sensing to evaluate plant cover in lowbush blueberry fields 19. Evaluation of Sethoxydin (POAST) in lowbush blueberry fields 20. Seedling pruning study 21. Evaluation of norflurazon (SOLICAM) with or without hexazinone (VELPAR) for bunchberry control 22. Selective wiper and mechanical control of dogbane and bracken fern 23. Evaluation of norflurazon (SOLICAM) in fall vs spring for oatgrass control 24. Evaluation of sulfonyl urea herbicides for bunchberry control 25. Evaluation of postemergence applications of DPX-L5300 for bunchberry control 26. Effect of time of application and formulation of hexazinone (VELPAR) on blueberry and bunchberry 27. Investigations of lowbush blueberry fruit-bud cold hardiness 28. The economics of investing in irrigation for lowbush blueberries 29. Effects of irrigation on lowbush blueberry yield and quality 30. Groundwater and surface water development for blueberry irrigation 31. Design, fabrication and testing of an experimental sterilizer for blueberry field

1992 Blueberry Research Progress Reports

The 1992 Blueberry Research Progress Reports pertain to and report on research conducted in 1991, and were prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include: 1992 CSRS Progress Reports: 1. Investigation of Groundwater Resources 2. Sprinkler Irrigation 3. Investigation of Preprocess Changes Leading to Berry Spoilage 4. Effect of Fertilization and Irrigation on Blueberry Quality 5. Effects of Calcium Salts and Citric Acid on Quality of Canned Lowbush Blueberries 6. Pollination of Lowbush Blueberry by Native Bees 7. Application of Heat for Controlling Insects 8. Investigations of Lowbush Blueberry Fruit Bud Cold-Hardiness 9. Steam Sterilization in Lowbush Blueberry Fields 10. Heat-Tolerant Molds 11. Vacuum Sanitation for Disease Control 12. Evaluation of Infrared Burner for Weed Control 13. Evaluation and Modification of Commercial Herbicide Wipers 14. Evaluation of Remote Sensing to Estimate Plant Cover in Lowbush Blueberry Fields 15. Comparison of Three Mechanical Blueberry Harvesters vs. Hand Raking Advisory Committee Research Reports: 16. Biology and action thresholds of secondary blueberry insects 17. Control of secondary blueberry pests 18. Control of blueberry maggot 19. Effects of calcium salts and citric acid on the quality of canned lowbush blueberries 20. The effects of postharvest handling on the dietary fiber and ellagic acid content of lowbush blueberries 21. Investigation of preprocessing changes that could lead to development of simple and inexpensive method to measure preprocessing berry spoilage 22. Determination of pesticide residue levels in fresh and processed lowbush blueberries 23. Vacuum sanitation for disease control 24. Heat-tolerant molds 25. Seedling pruning study 26. Effect of time and rate of application of Clopyralid for control of Vetch in lowbush blueberries 27. Evaluation and modification of commercial herbicide wipers 28. Effect of time of application and formulation of Hexazinone (Velpar) on Blueberry and Bunchberry 29. Evaluation of postemergence applications of Tribenuron Methyl for Bunchberry control 30. Thresholds of Dogbane and Bracken Fern by mechanical and chemical control in lowbush blueberry fields 31. Evaluation of the suitability of remote sensing to evaluate plant cover in lowbush blueberry fields 32. Evalution of infrared burner for weed control 33. Effect of time of fall pruning on growth and productivity of blueberry and evaluation of infrared burner to prune blueberries 34. Effect of Boron on lowbush blueberry fruit set and yield 35. Winter injury protection by potassium 36. Multiple cropping of wild stands 37. Nitrogen-Phosphorus study 38. Phosphorus dose/response curve 39. Investigations of lowbush blueberry fruit bud cold-hardines

1993 Progress Reports

The 1993 Progress Reports which contain Blueberry Tax Supported Weed Management and Pruning Project Reports, and CSRS Supported Weed Management and Pruning Project Reports, pertain to and report on research conducted in 1992. They were prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include: Progress Reports 1. Effects of Irrigation on Low bush Blueberry Yield and Quality 2. Economics of Investing in Irrigation for Lowbush Blueberries 3. Diammonium Phosphate Study 4. Phosphorus Dose/Response Curve 5. Winter Injury Protection by Potassium 6. Multiple Cropping of Wild Stands 7. Effect of Boron on Lowbush Blueberry Fruit Set and Yield 8.Determination of Pesticide Residue Levels in Freshly Harvested and Processed Lowbush Blueberries 9. Effects of Calcium Salts and Citric Acids on the Quality of Canned Lowbush Blueberries- missing 10. Investigation of PreProcess Changes- missing 11. The Effect of Fertilization and Irrigation on Blueberry Fruit Control - missing 12. Pollination Ecology of Lowbush Blueberry in Maine 13. Control of Secondary Blueberry Pests 14. Control of Blueberry Maggot 15. Biology and Action Thresholds of Secondary Blueberry Pests 16. Cold-Hardiness of Native Lowbush Blueberries 17. Design, Fabrication, and Testing of an Experimental Sterilizer for Blueberry Fields 18. Canned Product Quality - Heat Resistant Molds 19. Sanitation for Disease Control Blueberry Tax Supported Weed Management and Pruning Project Reports 20. Evaluation of Postemergence Applications of Tribenuron Methyl for Bunchberry Control 21. Comparison of Poast and Select for Suppression of Bunchgrass 22. Effect of Time of Fall Pruning on Growth and Productivity of Blueberries. and Evaluation of Infrared Burner to Prune Blueberries 23. Evaluation of Velpar impregnated DAP for weed control 24. Thresholds of Dogbane and Bracken Fern for Mechanical and Chemical Control in Lowbush Blueberry Fields 25. Effect of Time and Rate of Application of Clopyralid for Control of Vetch in Lowbush Blueberries 26. Hexazinone Ground Water Survey 27. Composting Blueberry Processing Waste 28. Hexazinone Movement in a Blueberry Soil in Maine CSRS Supported Weed Management and Pruning Project Reports 29. Evaluation of the Suitability of Remote Sensing to Evaluate Plant Cover in Lowbush Blueberry Fields 30. Obstruction Removal in Lowbush Blueberry Fields 31. Evaluation of Pressurized Rope Wick Wick Master Wiper for Treating Weeds Growing Above Lowbush Blueberries 32. Evaluation of Infrared Burner for Weed Control 33. Blueberry Extension Education Program Base Miscellaneous 34. Comparison of N, NP, and NPK Fertilizers to Correct Nitrogen and Phosphorus Deficienc

1993-94 Progress Report

The 1993 edition of the Progress Reports was prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include: 1. Effects of irrigation on lowbush blueberry yield and quality 2. The Economics of investigating irrigation for lowbush blueberries 3. Phosphorus dose/response curve 4. Winter injury protection by potassium 5. Multiple cropping of wild stands 6. Effect of Boron and Calcium on lowbush blueberry fruit set and yield 7. Comparison of N, NP, and NPK fertilizers to correct nitrogen and phosphorus deficiency 8. Determination of pesticide residue levels in freshly harvested and processed lowbush blueberries 9. Effects of calcium salts and citric acid on the quality of canned lowbush blueberries 10. Investigation of preprocess changes (chemical, microbiological, and/or physical) that can lead to the development of a simple and inexpensive method to measure preprocess berry spoilage 11. The effect of fertilization and irrigation in blueberry fruit quality 12. Pollination Ecology of lowbush blueberry in Maine 13. Current importance of insects in lowbush blueberry fields 14. Application of heat as a method of controlling secondary pest insects on lowbush blueberry: a feasibility study 15. Control of blueberry maggot 16. Control of secondary blueberry pest insects 17. Biology and action thresholds of secondary blueberry pest insects 18. Cold-hardiness of native lowbush blueberry 19. Design, fabrication, and testing of an experimental sterilizer for blueberry fields 20. Canned Product Quality--Heat-resistant molds 21. Sanitation for disease control 22. Evaluation of Velpar® impregnated DAP and Pronone® for weed control 23. Evaluation of postemergence applications of tribenuron methyl for bunchberry control 24. Evaluation of postemergence applications of a tank mix of tribenuron methyl and hexazinone for bunchberry control 25. Thresholds of dogbane and bracken fem by mechanical and chemical control in lowbush blueberry fields 26. Effect of time of application of clopyralid for control of vetch and effect on flowering in lowbush blueberries 27. Effect of time of fall pruning on growth and productivity of blueberries and evaluation of infrared burner to prune blueberries 28. Evaluation of infrared burner for selective seedling weed control 29. Evaluation of pressurized rope wick Wick Master wiper for treating weeds growing above lowbush blueberries 30. Blueberry Extension Education Program Base 31. Blueberry ICM program for Hancock County 32. Composting blueberry processing waste 33. Hexazinone ground water survey 34. Investigations of Lowbush Blueberry Fruit bud Cold-hardiness 35. Design, Fabrication, and Testing of an Experimental Sterilizer for Blueberry Field