. Cranberries; : the national cranberry magazine. Cranberries. Table 1. Potassium concentration cranberry plants grown and dry in soluti matter producti on culture. on for Stevens' First cvcle Second cvcle Third cvcle K supply (mg) Tissue K (%) Dry matter (g) Tissue K (%) Dry matter (g) Tissue K (%) Dry matter (g) 0 .26a .15a - - 4 .32a .20ab .18a 8 .45b .26b .24bc 12 .60c .36cd .27bcd 16 .57c .34c .27bcd 20 .78d .41d .30de 24 .85d .48e .34e Mean separation in columns by Duncan's multiple rang


. Cranberries; : the national cranberry magazine. Cranberries. Table 1. Potassium concentration cranberry plants grown and dry in soluti matter producti on culture. on for Stevens' First cvcle Second cvcle Third cvcle K supply (mg) Tissue K (%) Dry matter (g) Tissue K (%) Dry matter (g) Tissue K (%) Dry matter (g) 0 .26a .15a - - 4 .32a .20ab .18a 8 .45b .26b .24bc 12 .60c .36cd .27bcd 16 .57c .34c .27bcd 20 .78d .41d .30de 24 .85d .48e .34e Mean separation in columns by Duncan's multiple range test, 5% level. give solutions with 0, 2,4,8,10, and 12ppm. The 2 Uter containers, there- fore, contained 0, 4, 8, 12, 16, 20, and 24 mg K, respectively. Water levels were maintained during the experiment by additions of distilled water. Solution reaction was main- tained at pH +/- All treat- ments were replicated 5 times and pots were set on the bench in a ran- domized block design. Plants were grown in a glass- house with natural daylight extended to an 18 hour photoperiod with a combination of fluorescent and incandescent lamps. The cut- tings were allowed to grow as many shoots as would break from buds. All cuttings produced at least 1 shoot and some produced as many I as 4. At 58 days after "sticking" all shoot growth (leaves and stems) was harvested, dried, weighed, and analyzed for K concentration. The original cutting with the root sys- tem was left in place, the nutrient â solutions were all brought back to original mineral concentrations and the procedure was repeated. At 49 days all new shoot growth was harvested, dried, weighed and ana- lyzed for K concentration. The entire cycle was completed a third time with the final harvest 67 days after the second harvest. Analysis for K concentration was conducted by emission spectroscopy. Values were converted to percent dry matter for ease of presentation. The relationship between K con- centration and


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