... 1961. Enzymatic development of pyruvic acid in onion as a measure of pungency. J. Sci. ... Ye... more ... 1961. Enzymatic development of pyruvic acid in onion as a measure of pungency. J. Sci. ... Yellow 4/19/07 845 631 77 5 Mr. Buck D. Palmer Seed Co. Yellow 4/24/07 760 557 41 6 Georgia Boy D. Palmer Seed Co. Yellow 4/24/07 841 611 45 7 Miss Megan D. Palmer Seed Co. ...
The results of four experiments were combined to determine the relationships between leaf mineral... more The results of four experiments were combined to determine the relationships between leaf mineral nutrients or media pH and sweetpotato transplant production. The relative number of transplants and the relative mean transplant lengths or weights were determined by comparing the values obtained with unamended aged pine sawdust, a traditional medium. These values were regressed against leaf mineral concentrations and media
Tomatoes (Lycopersicon esculentum Mill.) were grown for two seasons on polyethylene‐mulched beds ... more Tomatoes (Lycopersicon esculentum Mill.) were grown for two seasons on polyethylene‐mulched beds to evaluate metam‐potassium (metam‐K) as both a fumigant and K source in comparison to metam‐sodium (metam‐Na) fumigant and KCl fertilizer applied preplant or injected. Treatments without fumigation had significantly lower early yield compared to treatments with metam‐Na at 468 or 935 L ha or metam‐K at 281 L
... George E. Boyhan is Senior Research Associate, Steve P. Kovach is former Associate Professor,... more ... George E. Boyhan is Senior Research Associate, Steve P. Kovach is former Associate Professor,Joseph D. Norton is Professor, Bruce R. Abrahams is Techni-cian, Marlin H ... Treatment Marketable Percent of Weed Pigweed Fall Goose Purslane Carpetweed YieW Tot. Yld. ...
ABSTRACT Lack of information on postharvest packinghouse performance hinders exploration, assessm... more ABSTRACT Lack of information on postharvest packinghouse performance hinders exploration, assessment of improvement opportunities and education possibilities. This study evaluated the sizing and inspection performance of 3 onion packinghouses and developed a discrete event simulation model to demonstrate the impact of improving these 2 performance variables on potential sales revenue generation, as part of a larger goal to develop a methodology for bringing packinghouses into the teaching and demonstration classroom via simulation. A group of 550 fresh sweet onions from the Vidalia production region in Georgia, US were obtained from 3 packinghouses for the 2-performance variable evaluation. Results indicated significant difference (p < 0.05) among the 3 packinghouses in terms of sizing error rate. The major departure from homogeneity was caused by a relatively higher fraction of incorrectly sized onions in 1 packinghouse. There was no significant difference (p > 0.05) between the packinghouses in terms of percentage rejects in the sorted Grade 1 onions. One packinghouse failed to meet the tolerance limit for defects, as specified by the US Grade Standards. Packinghouse managers were polled to discern impact, with houses responding with major management and packing line modifications.
The fate of manure-borne pathogen surrogates (gfp-labeled Escherichia coli O157:H7 and Listeria i... more The fate of manure-borne pathogen surrogates (gfp-labeled Escherichia coli O157:H7 and Listeria innocua and avirulent Salmonella Typhimurium) in the field was monitored at both sub-surface (30 cm from surface) and surface sites of static composting piles (3.5-m base diameter) composed of chicken litter and peanut hulls. Despite exposure to elevated temperatures, Salmonella was detected by enrichment culture in sub-surface samples following 14 days of composting. In surface samples, pathogen surrogates were detected in the summer after 4 days of composting by enrichment culture only, whereas E. coli O157:H7 and L. innocua remained detectable by direct plating (>2 log(10)cfu/g) up to 28 days in piles composted during the fall and winter. All three types of bacteria remained detectable by enrichment culture in surface samples composted for 56 days during the winter.
Page 1. 1 COMPREHENSIVE EVALUATION OF CALCIUM AND POTASSIUM METALOSATE ON EASTERN SHIPPING (ATHEN... more Page 1. 1 COMPREHENSIVE EVALUATION OF CALCIUM AND POTASSIUM METALOSATE ON EASTERN SHIPPING (ATHENA) TYPE CANTALOUPE George E. Boyhan1, Gene E. Lester2, Mike D. Hayes3, J. Kevin Phillips4, J. Thad Paulk5 University of Georgia Dept. ...
Tissue-culture propagated "Chicksaw" blackberry plants were set four feet apart in Apri... more Tissue-culture propagated "Chicksaw" blackberry plants were set four feet apart in April of 2000 as part of a five-year trellising trial near Reidsville, Georgia. There were five treatments: an untrellised control, posts with plastic baling string on both sides, posts and three vertical wires, "raspberry" V trellis, and Limited Arm-Rotation Shift-Trellis (eliminated in 2003). There were four replications with twenty
... 1961. Enzymatic development of pyruvic acid in onion as a measure of pungency. J. Sci. ... Ye... more ... 1961. Enzymatic development of pyruvic acid in onion as a measure of pungency. J. Sci. ... Yellow 4/19/07 845 631 77 5 Mr. Buck D. Palmer Seed Co. Yellow 4/24/07 760 557 41 6 Georgia Boy D. Palmer Seed Co. Yellow 4/24/07 841 611 45 7 Miss Megan D. Palmer Seed Co. ...
The results of four experiments were combined to determine the relationships between leaf mineral... more The results of four experiments were combined to determine the relationships between leaf mineral nutrients or media pH and sweetpotato transplant production. The relative number of transplants and the relative mean transplant lengths or weights were determined by comparing the values obtained with unamended aged pine sawdust, a traditional medium. These values were regressed against leaf mineral concentrations and media
Tomatoes (Lycopersicon esculentum Mill.) were grown for two seasons on polyethylene‐mulched beds ... more Tomatoes (Lycopersicon esculentum Mill.) were grown for two seasons on polyethylene‐mulched beds to evaluate metam‐potassium (metam‐K) as both a fumigant and K source in comparison to metam‐sodium (metam‐Na) fumigant and KCl fertilizer applied preplant or injected. Treatments without fumigation had significantly lower early yield compared to treatments with metam‐Na at 468 or 935 L ha or metam‐K at 281 L
... George E. Boyhan is Senior Research Associate, Steve P. Kovach is former Associate Professor,... more ... George E. Boyhan is Senior Research Associate, Steve P. Kovach is former Associate Professor,Joseph D. Norton is Professor, Bruce R. Abrahams is Techni-cian, Marlin H ... Treatment Marketable Percent of Weed Pigweed Fall Goose Purslane Carpetweed YieW Tot. Yld. ...
ABSTRACT Lack of information on postharvest packinghouse performance hinders exploration, assessm... more ABSTRACT Lack of information on postharvest packinghouse performance hinders exploration, assessment of improvement opportunities and education possibilities. This study evaluated the sizing and inspection performance of 3 onion packinghouses and developed a discrete event simulation model to demonstrate the impact of improving these 2 performance variables on potential sales revenue generation, as part of a larger goal to develop a methodology for bringing packinghouses into the teaching and demonstration classroom via simulation. A group of 550 fresh sweet onions from the Vidalia production region in Georgia, US were obtained from 3 packinghouses for the 2-performance variable evaluation. Results indicated significant difference (p < 0.05) among the 3 packinghouses in terms of sizing error rate. The major departure from homogeneity was caused by a relatively higher fraction of incorrectly sized onions in 1 packinghouse. There was no significant difference (p > 0.05) between the packinghouses in terms of percentage rejects in the sorted Grade 1 onions. One packinghouse failed to meet the tolerance limit for defects, as specified by the US Grade Standards. Packinghouse managers were polled to discern impact, with houses responding with major management and packing line modifications.
The fate of manure-borne pathogen surrogates (gfp-labeled Escherichia coli O157:H7 and Listeria i... more The fate of manure-borne pathogen surrogates (gfp-labeled Escherichia coli O157:H7 and Listeria innocua and avirulent Salmonella Typhimurium) in the field was monitored at both sub-surface (30 cm from surface) and surface sites of static composting piles (3.5-m base diameter) composed of chicken litter and peanut hulls. Despite exposure to elevated temperatures, Salmonella was detected by enrichment culture in sub-surface samples following 14 days of composting. In surface samples, pathogen surrogates were detected in the summer after 4 days of composting by enrichment culture only, whereas E. coli O157:H7 and L. innocua remained detectable by direct plating (>2 log(10)cfu/g) up to 28 days in piles composted during the fall and winter. All three types of bacteria remained detectable by enrichment culture in surface samples composted for 56 days during the winter.
Page 1. 1 COMPREHENSIVE EVALUATION OF CALCIUM AND POTASSIUM METALOSATE ON EASTERN SHIPPING (ATHEN... more Page 1. 1 COMPREHENSIVE EVALUATION OF CALCIUM AND POTASSIUM METALOSATE ON EASTERN SHIPPING (ATHENA) TYPE CANTALOUPE George E. Boyhan1, Gene E. Lester2, Mike D. Hayes3, J. Kevin Phillips4, J. Thad Paulk5 University of Georgia Dept. ...
Tissue-culture propagated "Chicksaw" blackberry plants were set four feet apart in Apri... more Tissue-culture propagated "Chicksaw" blackberry plants were set four feet apart in April of 2000 as part of a five-year trellising trial near Reidsville, Georgia. There were five treatments: an untrellised control, posts with plastic baling string on both sides, posts and three vertical wires, "raspberry" V trellis, and Limited Arm-Rotation Shift-Trellis (eliminated in 2003). There were four replications with twenty
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