Methods
Field study, Waiakea Research Station, avg yearly temp 74 F, high 81 F, low 66 F, avg yearly rainfall 130.6 in.
Field study, Waiakea Research Station, avg temp 71.01 F, high 90.22 F, low 57.35 F, avg BP (in Hg) 29.39, total rainfall 126.7 in, avg soil temp 75.7 F, avg RH 73.29%.
Field observations, Waiakea, Yearly avg temp 70.899 F, high 85.83, low 57.35; soil temp avg 75.39, high 89.48, low 64.22; rainfall year total 151.34", monthly average 12.61", high month 25.432", low month 3.41"; BP in Hg avg 29.39, high 29.55, low 29.04; PAR (uE) yr avg 385.35, high 2113.8, low 1.3; DP (F) avg 67.481, high 81.06, low 48.55; RH (%) avg 90.67, high 110.25, low 34.25
Field observations, Waiakea,
Field observations, Waiakea,
Field observations, Waiakea,
Field observations, avg rainfall 135.36 in, avg temp 70.84 F, avg max temp 77.83 F, avg min temp 63.84
Field observations, Waiakea, Hardiness Zone 11, Flat Topography, avg temp 74 F, low temp 66 F, high temp. 94 F, average yearly rainfall 130.6 in.
Field observations, Waiakea,
Field observations, Waiakea,
Field observations, Waiakea,
Field observations, Waiakea, Yearly averages, December 2005 - July 2006 (12 months prior to harvest): BP (mbar) 996.94, Soil temp (F) 74.51, PAR (uE) 437.25, Wind (MPH) .92, Air temp (F) 70.3, DP (F) 69.98, RH% 100.42, Total rainfall (in) 197.18, high month March 2006 35.85, low month June (2006) 5.6
Field observations, Waiakea, Year 6/2006 - 9/2007, Avg temp 70.77 F, high temp 88.74 (August 2006), low temp 56.7 (Apr 2007), Total rainfall 171.3 inches, Average wind speed 5.67 MPH, Average SR (MJ/m2) N/A
Field observations, Waiakea, Year 7/2007 - 7/2008, Avg temp 69.86 F, high temp 83.7 (December 2007), low temp 55.28 (Apr 2008), Total rainfall 188.6 inches, Average wind speed 5.42 MPH, Average SR (MJ/m2) 14.5
Field observations, Waiakea, Year 6/2008 - 6/2009, Avg temp 69.28 F, high temp 82.95 (July 2008), low temp 53.06 (Febr 2009), Total rainfall 159.94 inches, Average wind speed 4.81 MPH, Average SR (MJ/m2) 13.29
Field observations, Waiakea, Year 6/2009 - 6/2010, Avg temp 69.45 F, high temp 85.1 (Oct 2009), low temp 55.4 (Apr 2010), Total rainfall 129.838 inches, Average wind speed 4.79 MPH, Average SR (MJ/m2) 14.92
Six lychee cultivars grown on Mollisol and Inceptisol soils were evaluated for 8 years at the Adjuntas Agricultural Experiment Station of the University of Puerto Rico (UPR-Adjuntas) and La Balear farm, Adjuntas, Puerto Rico, respectively. Before transplanting, the soil was chisel plowed to a depth of about 90 cm. Planting holes of about 1.5-ft deep were dug with an auger connected by a drive shaft to the power-take-off unit of a tractor. On transplanting, each plant received 11 g granular P provided in the form of triple superphosphate. Six-month-old air layered trees of cultivars ‘Brewster’, ‘Bosworth-3’ (‘Kwai May Pink’), ‘Groff’, ‘Mauritius’, ‘Kaimana’, and ‘Salathiel’ were transplanted to the field 13 May 1999 (UPR-Adjuntas) and 3 Apr. 2003 (La Balear farm) and arranged in a randomized complete block design with five replications at each location. Within a replication, plots for each cultivar contained three trees spaced 16 ft apart and 20 ft between adjacent rows (about 336 trees/ha) forming a triangular array. ‘Groff’ and ‘Kaimana’ are seedling selections from developed from ‘Hak Ip’ originating in Hawaii. ‘Brewster’ is a selection from ‘Chen Tze’ introduced to Florida in the early 1900’s from China. ‘Bosworth-3’ also called ‘Kwai May Pink’ is a selection made in Australia whose origin can be traced back to a town called Skekki in Southern China. 'Mauritius’ also called ‘Tai Tso' originated in Southern China. ‘Salathiel’ is an Australian selection of unknown origin.
Six lychee cultivars grown on Mollisol and Inceptisol soils were evaluated for 8 years at the Adjuntas Agricultural Experiment Station of the University of Puerto Rico (UPR-Adjuntas) and La Balear farm, Adjuntas, Puerto Rico, respectively. Before transplanting, the soil was chisel plowed to a depth of about 90 cm. Planting holes of about 1.5-ft deep were dug with an auger connected by a drive shaft to the power-take-off unit of a tractor. On transplanting, each plant received 11 g granular P provided in the form of triple superphosphate. Six-month-old air layered trees of cultivars ‘Brewster’, ‘Bosworth-3’ (‘Kwai May Pink’), ‘Groff’, ‘Mauritius’, ‘Kaimana’, and ‘Salathiel’ were transplanted to the field 13 May 1999 (UPR-Adjuntas) and 3 Apr. 2003 (La Balear farm) and arranged in a randomized complete block design with five replications at each location. Within a replication, plots for each cultivar contained three trees spaced 16 ft apart and 20 ft between adjacent rows (about 336 trees/ha) forming a triangular array. ‘Groff’ and ‘Kaimana’ are seedling selections from developed from ‘Hak Ip’ originating in Hawaii. ‘Brewster’ is a selection from ‘Chen Tze’ introduced to Florida in the early 1900’s from China. ‘Bosworth-3’ also called ‘Kwai May Pink’ is a selection made in Australia whose origin can be traced back to a town called Skekki in Southern China. 'Mauritius’ also called ‘Tai Tso' originated in Southern China. ‘Salathiel’ is an Australian selection of unknown origin.