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Yuqi Li and Neil S. Mattson

knowledge, there is no report about the effect of seaweed extracts on the postharvest life of bedding plants and vegetable transplants. Different plant species can have different responses to the application methods and rates of seaweed concentrate ( Khan et

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Luther C. Carson and Monica Ozores-Hampton

, tomato varieties, soil and irrigation types, with allowances for supplemental N applications ( Olson et al., 2011 ). Growers typically follow UF/IFAS irrigation recommendations, but use N fertilizer rates greater than the UF/IFAS recommendation

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Kelly T. Morgan, T. Adair Wheaton, William S. Castle, and Laurence R. Parsons

–N concentrations in groundwater above the allowed maximum contaminant limit have been attributed to application of nitrogen (N) fertilizers for citrus production ( Alva et al., 2003 ). The N source, rate of uptake, irrigation management, duration and intensity of

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Sara Andrea Moran-Duran, Robert Paul Flynn, Richard Heerema, and Dawn VanLeeuwen

.g., P n ) might be affected. The objective of this study is to determine the effects of Ni and N application rates on P n activity, leaf greenness (SPAD), and shoot lignin concentration over time in nonbearing pecan trees. This study hypothesizes that

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Marco Volterrani, Nicola Grossi, Monica Gaetani, Lisa Caturegli, Aimila-Eleni Nikolopoulou, Filippo Lulli, and Simone Magni

an increase in the rate of shoot formation from crowns of ‘Tifton 85’ common bermudagrass treated with EP. Most information on PGRs is related to field applications for biomass reduction, and little is known about stolon growth regulation in pot

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Itani Tshivhandekano, Fhatuwani Nixwell Mudau, and Thilivhali Emmanuel Tshikalange

demonstrated that early-applied N levels ranging from 75 to 225 kg·ha –1 improved growth and quality in cultivated bush tea ( Tshivhandekano et al., 2017 ). However, data are lacking to demonstrate the effect of timing and rates of N application on bush tea

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S.D. Sharma and M. Singh

, sublethal glyphosate rates can cause death of the apical meristem, consequently releasing apical dominance, allowing production of lateral branches. These symptoms appeared in ivyleaf morning-glory in this study with the application of glyphosate. Koger et

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Todd C. Einhorn, Yan Wang, and Janet Turner

, 2007 ). Moreover, split applications of GA 3 did not improve fruit quality compared with single applications at the same rate for ‘Bing’ and ‘Lambert’ ( Facteau et al., 1985a ) or ‘Sweetheart’ ( Kappel and MacDonald, 2002 ), implying that timing of

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Julie Fulenwider* and David Creech

General guidelines for the fertilization of azaleas in Southern landscapes often suggest applications be made after bloom. Early fertilizations are thought to encourage earlier blooms which are more likely to be damaged by spring freezes. Three years of data will be presented. Treatments include four fertilization rates, and various times of application from early (December-January) to late (March-April). Four to six varieties were evaluated (depending on the year of the study) in the SFA Ruby M. Mize Azalea Garden and in plantings on the Stephen F. Austin State Univ. campus. A randomized complete block design was utilized with three plants per replication. Influence of timing and rate of fertilizer application on bloom date and persistence. Influence of fertilizer treatments on leaf nutrient concentrations will be presented.

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Michael W. Smith, Becky S. Cheary, and Becky L. Carroll

Nitrogen was applied between 1996 and 2002 to grafted `Mohawk' pecan (Carya illinoinensis Wangenh. C. Koch.) trees at 75 or 150 kg·ha-1 either as a single application in March or as a split application with 60% applied in March and 40% the first week of June. In 1997 and 2001, a spring freeze damaged developing shoots and buds, resulting in a small, noncommercial crop and the June portion of the N application was withheld. Nitrogen was also applied during the first week in October at 0 or 50 kg·ha-1 N if the crop load before fruit thinning in August was ≥40% fruiting shoots. There were few differences in the percentage of fruiting shoots or cluster size associated with N rate or applying N as a single or split application. Leaf N concentrations were either not affected by treatment or the results were inconsistent. Omitting the June application when a crop failure occurred did not affect the percentage of fruiting shoots the following year. October N application either did not affect or reduced the percentage of fruiting shoots the following year, and had no influence on leaf N concentration in July or October. These results indicate that the only advantage of a split N application is the option of withholding the second portion in the event of a crop failure. However, the added expense associated with splitting the N application versus the risk of crop failure must be assessed for each situation to determine if this is a sound economic practice. These data do not support an October N application when the crop is ≥40% fruiting shoots to reduce irregular bearing.