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2. Improvement in crops by using plant biotechnology
- Collection:
- Agricultural Communications Documentation Center (ACDC)
- Contributers:
- George, Hary (author)
- Format:
- Editorial
- Publication Date:
- 2022-06-06
- Published:
- USA: Global Science Research Journals
- Location:
- Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 206 Document Number: D12814
- Journal Title:
- Global Journal of Agricultural Economics and Econometrics
- Journal Title Details:
- Vol. 10, N.2
- Notes:
- 2 pages, The sharp decline in the availability of arable land and the proper supply of irrigation water, coupled with the continued sharp increase in food demand, are putting pressure on farmers to produce more with fewer resources. A viable solution to alleviate this pressure is to speed up the plant breeding process by using biotechnology in breeding programs.
3. An Alternative Healing Method for Grafted Tomato Transplants: The Effect of Light Exclusion and Substrate Temperature on Plant Survival and Growth
- Collection:
- Agricultural Communications Documentation Center (ACDC)
- Contributers:
- Lang, Kristine M. (author), Nair, Ajay (author), and Litvin, Alexander G. (author)
- Format:
- Journal article
- Publication Date:
- 2020-12-01
- Published:
- USA: American Society for Horticultural Science
- Location:
- Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 202 Document Number: D12051
- Journal Title:
- Hort Technology
- Journal Title Details:
- Vol. 30, issue 6
- Notes:
- 8 pages, via Online journal, The use of tomato (Solanum lycopersicum) grafting is gaining traction across the United States, but small-scale growers face the challenge of creating optimum postgrafting healing conditions. The practice of blocking light for a period of 2 to 4 days while maintaining high humidity is commonly recommended for healing grafted tomato transplants; however, research is exploring alternatives to this practice. The present study investigated a low-input healing method for grafted tomato transplants with a specific focus on light and the use of propagation heat mats to regulate substrate and healing chamber air temperatures during the 7-day healing process. We hypothesized that 4 days of light exclusion and the use of propagation heat mats would improve grafted tomato transplant survival and growth. ‘Cherokee Purple’ was used as the scion and ‘RST-04-106-T’ was used as the rootstock. The whole plot factor was heat [propagation mats set at 80 °F (heat) or no propagation mat (no heat)] and the subplot factor was light exclusion (0, 4, or 6 days of dark). The highest survival rate among treatments was 97% in 0 days of dark with no heat treatment; survival decreased to 84% in 4 and 6 days of dark with no heat treatments. The plant survival rate was 96% with 0 days of dark and heat treatment; however, the survival rates were 63% and 45% for the 4- and 6-day dark treatments, respectively. The scion stem diameter was largest for transplants grown in 0 days of dark, but there was no difference in stem diameter due to heat treatments. There were no differences among scion or rootstock biomasses due to heat or light treatments. These results demonstrate that propagation mats set at 80 °F to regulate the substrate temperature were detrimental to grafted transplant survival under extended periods of light exclusion. However, this finding creates the basis to explore lower levels of substrate temperature modification. Our work also indicates that light exclusion may not be necessary for healing grafted tomato plants regardless of root-zone temperature treatments. Future work should examine the interactions of various substrate and air temperatures under full light conditions and their effects on grafted tomato transplant survival and growth. This work contributes to the ongoing research of how to optimize low-input healing methods that may be readily adopted by small-scale tomato growers.
4. Differences in Inflorescence Numbers and Endogenous Gibberellic Acid Levels in ‘Afterglow’ Bougainvillea
- Collection:
- Agricultural Communications Documentation Center (ACDC)
- Contributers:
- Chng, Mun Wye (author) and Moore, Kimberly A. (author)
- Format:
- Journal article
- Language:
- International
- Publication Date:
- 2020-12-01
- Published:
- USA: American Society for Horticultural Science
- Location:
- Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 202 Document Number: D12048
- Journal Title:
- Hort Technology
- Journal Title Details:
- Vol. 30, issue 6
- Notes:
- 4 pages, via Online journal, Bougainvillea (Bougainvillea sp.) plant inflorescence number will vary in response to multiple cues such as changes in temperature, water, light intensity, pruning, and photoperiod. Previous research reports that the application of plant growth regulators (PGRs) to bougainvillea grown under varying photoperiods improved inflorescence number, probably as a result of changes in gibberellic acid (GA) levels. There are many bioactive plant GAs, but we chose to investigate differences in gibberellic acid 3 (GA3) levels and inflorescence number in response to the application of ethephon (2-cholorethylphosponic acid) or abscisic acid (ABA) to ‘Afterglow’ bougainvillea (Bougainvillea ×buttiana) grown under 14-hour photoperiod [long-day (LD)] conditions. Plants were 5 inches tall with seven visible lateral nodes and were grown in a greenhouse in 4-inch pots filled with 5-mm coarse aquarium zeolite. Ethephon was applied as a foliar spray at 0.05, 0.07, 0.10, 0.15, or 0.20 mg/plant. ABA was applied as a soil drench at 1, 1.5, 3, 6, 8, or 10 mg/plant. Endogenous levels of GA3 were measured 1 and 48 days after treatment to calculate the change in GA3 (∆GA3). A short day (SD) control of 8 hours was included to measure differences in inflorescence number and ∆GA3 between photoperiods. ‘Afterglow’ plants grown under SD conditions had the greatest decrease in ∆GA3 (–1.09 µg·g–1) over 48 days and the most inflorescences (10.6) compared with LD control plants with a decrease in ∆GA3 of –0.09 µg·g–1 and fewer inflorescences (1.0). Plants grown under LD conditions and treated with 0.05 mg/plant ethephon had inflorescence numbers (9.6) and levels of ∆GA3 (–0.74 µg·g–1) similar to the SD control. As ethephon rate increased to more than 0.05 mg/plant, inflorescence number on LD plants decreased and ∆GA3 increased. Exogenous ABA rates of 1 mg/plant produced inflorescence numbers (1.4) and ∆GA3 (–0.10 µg·g–1) similar to the LD control. As the rate increased, ∆GA3 increased and inflorescence number decreased. Plants treated with ABA rates of 3 mg/plant and more were defoliated and had no inflorescences.
5. Fall-bearing Year Herbicides and Spring-nonbearing Year Foramsulfuron Applications for Hair Fescue Management in Lowbush Blueberry
- Collection:
- Agricultural Communications Documentation Center (ACDC)
- Contributers:
- White, Scott Neil (author) and Zhang, Linshan (author)
- Format:
- Journal article
- Language:
- Engllish
- Publication Date:
- 2020-12-01
- Published:
- Canada: American Society for Horticultural Science
- Location:
- Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 202 Document Number: D12050
- Journal Title:
- Hort Technology
- Journal Title Details:
- Vol. 30, issue 6
- Notes:
- 7 pages, via Online journal, Hair fescue (Festuca filiformis) is a tuft-forming perennial grass that reduces yields in lowbush blueberry (Vaccinium angustifolium) fields. Nonbearing year foramsulfuron applications suppress hair fescue, but there is interest in increasing suppression through foramsulfuron use in conjunction with fall-applied herbicides. The objective of this research was to determine the main and interactive effects of fall-bearing year herbicide applications and spring-nonbearing year foramsulfuron applications on hair fescue. The experiment was a 5 × 2 factorial arrangement of fall-bearing year herbicide (none, terbacil, pronamide, glufosinate, dichlobenil) and spring-nonbearing year foramsulfuron application (0, 35 g·ha−1) arranged in a randomized complete block design at lowbush blueberry fields in Portapique and Stewiacke, Nova Scotia, Canada. Spring-nonbearing year foramsulfuron applications did not reduce total tuft density or consistently reduce flowering tuft density, flowering tuft inflorescence number, or flowering tuft seed production. Fall-bearing year pronamide applications reduced hair fescue density for the 2-year production cycle, although additional bearing year density reductions occurred when pronamide was followed by spring-nonbearing year foramsulfuron applications at Stewiacke. Fall-bearing year dichlobenil applications reduced total and flowering tuft density at each site, although reductions in flowering tuft inflorescence number and seed production were most consistent when followed by spring-nonbearing year foramsulfuron applications at Stewiacke. Suppression extended into the bearing year at each site, and dichlobenil should be examined further for hair fescue control. Fall-bearing year glufosinate applications reduced hair fescue total tuft density at each site and flowering tuft density and flowering tuft seed production at Stewiacke. Fall-bearing year glufosinate applications followed by spring-nonbearing year foramsulfuron applications also reduced nonbearing year flowering tuft inflorescence number and bearing year hair fescue seedling density at Stewiacke, indicating that this treatment may reduce hair fescue seedling recruitment at some sites. Fall-bearing year terbacil applications did not suppress hair fescue and are not recommended for hair fescue management in lowbush blueberry.
6. As carbon dioxide levels rise, major corps are losing nutrients
- Collection:
- Agricultural Communications Documentation Center (ACDC)
- Contributers:
- Kennedy, Merrit (author)
- Format:
- Online article
- Publication Date:
- 2018-06-19
- Published:
- USA
- Location:
- Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 198 Document Number: D09751
- Notes:
- NPR: The Salt. 5 pages.
7. Experiential nursey integrated pest management workshop series to enhance grower practice adoption
- Collection:
- Agricultural Communications Documentation Center (ACDC)
- Contributers:
- LeBude, Anthony (author), Fulcher, Amy (author), Dubois, Jean-Jacque (author), Braman, S. Kris (author), Chappell, Matthew (author), Chong, J.C. (author), Derr, Jeffrey (author), Gauthier, Nicole (author), Hale, Frank (author), Klingeman, William (author), Knox, Gary (author), Neal, Joseph (author), Windham, Alan (author), and North Carolina State University University of Tennessee National Science Foundation Center for Integrated Pest Management University of Georgia Clemson University Virginia Tech University of Kentucky University of Florida
- Format:
- Journal article
- Publication Date:
- 2017-12
- Published:
- United States: American Society for Horticultural Science
- Location:
- Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 12 Document Number: D10344
- Journal Title:
- HortTechnology
- Journal Title Details:
- 27(6) : 772-781
- Notes:
- 10 pages., Via online journal., Three, 2-day hands-on experiential learning workshops were presented in three southeastern United States cities in June 2014, by the Southern Nursery Integrated Pest Management (SNIPM) working group. Attendees were provided 4 hours of instruction including hands-on demonstrations in horticultural management, arthropods, plant diseases, and weeds. Participants completed initial surveys for gains in knowledge, skills, and abilities as well as their intentions to adopt various integrated pest management (IPM) practices after the workshop. After 3 years, participants were again surveyed to determine practice adoption. Respondents changed their IPM practice behavior because of attending the workshops. Those returning the survey set aside more time to scout deliberately for pests, plant diseases, and weeds; used a standardized sampling plan when scouting; and adopted more sanitation practices to prevent plant disease. Fewer horticultural management practices were adopted than respondents originally intended. Future emphasis should be placed on using monitoring techniques to estimate pest emergence, for example, traps and pheromone lures, as well as plant phenology and record keeping. However, more work is needed to highlight both the immediate and long-term economic benefits of IPM practice adoption in southeastern U.S. nursery production.
8. Identifying publics in Florida, California, and Texas as they relate to citrus greening
- Collection:
- Agricultural Communications Documentation Center (ACDC)
- Contributers:
- Ruth, Taylor K. (author), Lamm, Alexa J. (author), and Rumble, Joy N. (author)
- Format:
- Conference paper
- Publication Date:
- 2017-02
- Published:
- USA
- Location:
- Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 163 Document Number: D08160
- Notes:
- Research paper presented in the Agricultural Communications Section, Southern Association of Agricultural Scientists (SAAS) conference in Mobile, Alabama, February 4-7, 2017. 26 pages.
9. An integrated information system to facilitate farmers in wheat, sugarcane, and other crop diseases identification
- Collection:
- Agricultural Communications Documentation Center (ACDC)
- Contributers:
- Naeem, Arshia (author), Anjum, Maria (author), Rehman, Mariam (author), Mahmood, Zahid (author), Kamran, Muhammad Asif (author), and Lahore College for Women University, Lahore, Pakistan Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan National Agricultural Research Centre, Islamabad, Pakistan
- Format:
- Journal article
- Publication Date:
- 2016
- Published:
- Pakistan: Asianet-Pakistan
- Location:
- Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 164 Document Number: D08248
- Journal Title:
- Pakistan Journal of Agricultural Research
- Journal Title Details:
- 29 (4): 373-380
10. Society, nature, and experience: jouissance on the margins
- Collection:
- Agricultural Communications Documentation Center (ACDC)
- Contributers:
- Dickens, Peter (author)
- Format:
- Book chapter
- Publication Date:
- 2016
- Location:
- Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: D08869
- Notes:
- Pages 257-287 in Ormrod, James S. (ed.), Changing our environment, changing ourselves: nature, labour, knowledge and alienation. United Kingdom: Palgrave Macmillan UK, London. 315 pages.