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Fluid Journal : Fluid Journal 2008-2009
three weeks of storage, exterior and interior percent marketability of fruit from plants receiving four applications of AA-Ca or MC- Ca, versus water, were for most comparisons significantly greater. Also, one or two applications of Ca applied early or late, when compared to water, were significantly greater in exterior and interior marketability for most comparisons. Sugars and taste. Percent soluble solids concentration for all fruit was similar within each production year, regardless of Ca source or number of applications. Sugars were lower by about 2.8 percent in 2002 versus 2001. With few exceptions, consumer preference for all fruit ranged from like to like extremely. Consumers usually gave fruit from water-treated plants the best taste ratings, but fruit from the water treatments generally were not significantly better than fruit from plants receiving Ca treatments. Only a few of the Ca treatments resulted in fruit with significantly lower ratings, relative to water-treated controls Cantaloupe melons Firmness. At harvest, whether grown in California or Texas or having received pre-harvest plant-applied Ca treatments or water, exterior or interior firmness readings were not consistently, significantly different. Following one or two weeks storage, fruit exterior or interior tissues from plants receiving applications of Ca were usually not significantly firmer than those from the water treatment Ca. At harvest, whether grown in California or Texas, Ca concentration was usually numerically the highest in both exterior and interior fruit tissues from plants having received four applications of AA-Ca (Table 3), but the concentrations were not significantly higher in fruit from the water treatment. Following one or two weeks storage, fruit exterior and interior tissues from plants having received four applications of AA-Ca remained numerically the highest in Ca and generally were significantly higher than water. However, all other Ca treatments usually were not Table 1. Firmness of 'Orange Dew' orange-flesh honeydew melon exterior with peel removed (exterior) and edible-flesh (interior) at harvest and following commercial storage, Sacramento Valley, CA. Fruit harvested at abscission in Sept. 2001 and 2002. Firmness (N) Exterior Interior Treatment Applicationy 2001 2002 2001 2002 At harvest Water - 9.1 b 17.4 c 6.2 c 7.7 c AA-Ca 2early+2late 16.0a 23.5 a 12.1 a 12.3 a MC-Ca 2early+2late 16.5a 20.9 ab 13.0 a 9.3 bc AA-Ca 1 early - 18.4 b - 8.3 bc AA-Ca 2 early - 18.4 b - 8.0 bc MC-Ca 1 early - 20.4 bc - 10.4 ab MC-Ca 2 early - 19.2 bc - 9.8 bc AA-Ca 1 late 8.7 b - 13.0 a - AA-Ca 2 late 12.5 ab - 10.7 ab - MC-Ca 1 late 12.1 a - 9.6 b - MC-Ca 2 late 11.5 b - 11.9 ab - P!0.05 After 2 weeks storage Water - 8.2 c 15.7 c 4.2 b 7.2 d AA-Ca 2early+2late 11.5ab 23.5a 7.5 a 12.3 a MC-Ca 2early+2late 14.5a 20.7 ab 8.6 a 9.6 bc AA-Ca 1 early - 19.7 ab - 10.1 ab AA-Ca 2 early - 16.6 bc - 7.9 cd MC-Ca 1 early - 17.9 bc - 11.4 ab MC-Ca 2 early - 19.1 bc - 9.1 bcd AA-Ca 1 late 8.5 c - 3.6 b - AA-Ca 2 late 8.2 c - 4.9 b - MC-Ca 1 late 8.5 c - 3.9 b - MC-Ca 2 late 9.7 bc - 3.0 b - P!0.05 After 3 weeks storage Water - 7.2 c 14.3 c 3.3 c 6.9 b AA-Ca 2early+2late 10.1ab 20.9a 5.0 ab 11.7 a MC-Ca 2early+2late 12.3a 17.2 bc 6.4 a 9.0 ab AA-Ca 1 early - 15.3 bc - 9.1 ab AA-Ca 2 early - 15.6 bc - 8.9 ab MC-Ca 1 early - 19.1 ab - 11.8 a MC-Ca 2 early - 14.3 c - 6.9 b AA-Ca 1 late 7.5 c - 2.9 c - AA-Ca 2 late 8.1 b - 4.0 bc - MC-Ca 1 late 8.2 bc - 3.9 bc - MC-Ca 2 late 8.1 bc - 3.5 c - P!0.05 y Applications: 1 early = at female flowering, 2 early = 1 early + 20 d later, 1 late = 3 to 5 d prior to full-slip, 2 late = 40 d after female flowering + 1 late. (--) = no treatment application conducted that year.
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