There are many fertilizer sources available for commercial crop production. The characteristics of each fertilizer type determine whether its use poses an advantage or a disadvantage to a farmer. This 7-page fact sheet focuses on how to select the right fertilizer to enhance profitability and satisfy best management practices (BMPs). Written by Guodong Liu, Lincoln Zotarelli, Yuncong Li, David Dinkins, Qingren Wang, and Monica Ozores-Hampton, and published by the UF Department of Horticultural Sciences, October 2014. (UF/IFAS Photo by Thomas Wright) HS1255/HS1255: Controlled-Release and Slow-Release Fertilizers as Nutrient Management Tools (ufl.edu)

The Florida strawberry industry is primarily located in the Plant City area with approximately 6,000 acres. There is scattered acreage in other parts of the state including Bradford County and the surrounding area of northeastern Florida. The Bradford County area was once the main strawberry producing area in the state with 1500 acres of strawberries grown during the period of 1915 to 1920. This rich heritage is still important to Bradford County's economy today. Strawberry acreage in northeastern Florida (Gainesville and north) was estimated at 40 acres in 2003. This document is HS-956, one of a series of Department of Horticultural Sciences, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Publication date: August 2003. https://edis.ifas.ufl.edu/hs190

Potato (Solanum tuberosum L.) has low phosphorus (P) use efficiency as compared with other vegetable crops. This study was conducted at two commercial chipping potato farms (A and B) in Northeast Florida to evaluate different P rates for potato production. Plot size was 0.62 and 0.49 hectares for Farms A and B, respectively. The total trial area was 13.32 hectares per growing season for three consecutive years from 2018 to 2020. The randomized complete block design (RCBD) was employed with four replications per P rate. The chipping potato variety, ‘Atlantic’ was cultivated with three P rates: 0, 24.5, and 48.9 kg P ha−1 in 2018, and 12.2, 24.5, and 48.9 kg P ha−1 in 2019 and 2020. The soil of Farm A contained 497 mg kg−1 Mehlich-3 extractable P and 946 mg kg−1 aluminum (Al), and that of Farm B had 220 mg kg−1 Mehlich-3 extractable P and 253 mg kg−1 Al. The results showed that a P rate of 48.9 kg P ha−1 significantly improved tuber yield as compared to 0 in 2018 or 12.2 kg P ha−1 in 2019 and 2020. Application of 48.9 kg P ha−1 fertilizer P significantly increased the soil P level in 2018 and 2020, while the application of 24.5 kg P ha−1 fertilizer P increased the soil P level significantly in 2018 only. Tubers with 48.9 kg P ha−1 showed significantly lower external quality issues than 0 or 12.2 and 24.5 kg P ha−1. However, there were no significant differences in specific gravity, internal tuber quality, and tuber size among the different P rates. The tuber yield data show that potato plants grown on soil with high legacy P still require approximately 50 kg ha−1 P application for sustainable potato production in the area. This high P requirement results from the combination of high concentrations of active metals (Al and iron (Fe)) and a decrease in pH of one unit in the growing season. New P-fertilization programs with post-plant applications rather than with pre-plant application are urgently needed for minimizing P-immobilization by Al and Fe and improving P-use efficiency for potato production in the state.

Long squash is an annual, vigorous, and herbaceous crop that was brought to the Americas by Paleoindian populations from Asia before the arrival of Columbus. This 4-page fact sheet provides an overview of this plant as well as recommendations for individuals in Florida who are interested in growing it. Written by Guodong Liu, Yuncong Li, David Dinkins, Bonnie Wells, Qingren Wang, and Yuqi Cui, and published by the UF Department of Horticultural Sciences, December 2015.   HS1272/HS1272: Long Squash—an Asian Vegetable Expanding in Florida (ufl.edu)