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Journal of Plant Sciences
Year: 2007  |  Volume: 2  |  Issue: 6  |  Page No.: 613 - 618

Effect of Treatment of Potatoes in Storage and Pre-Planting with Hydrogen Peroxide (H2O2) on Emergence and Yield

Khalil I. Al-Mughrabi    

Abstract: Field trials were conducted in Hartland, New Brunswick, Canada to study the effect of in-storage treatment of seed potatoes with hydrogen peroxide (H2O2) on emergence and yield parameters of Dark Red Norland potatoes. The trials included: (1) an untreated control; (2) control untreated with H2O2 in storage but sprayed with a mixture of H2O2 and water at a rate of 1:100 before planting; (3) potatoes treated with H2O2 in storage at 1:50 rate for 16 weeks and (4) potatoes treated with H2O2 in storage at 1:50 rate for 16 weeks and then sprayed with H2O2 at 1:100 rate prior to planting. Plant emergence was assessed and percent emergence was calculated 45 days after planting. Potato tubers were graded for total yield, tuber size, tuber weight, tuber number and miss-shaped tubers. Tuber sizes included the following categories: <1.75``, >1.75``<=2.0``, >2.0``<=2.25``, >2.25``<=2.75``, >2.75``<=3.0``, >3.0``<=3.25`` and >280 g. Marketable yield which included all tubers measuring >2`` in diameter was also calculated. Among these treatments, application of H2O2 in storage and then treating seed pieces before planting with H2O2 at the rate of 1:100 resulted in significantly higher percentage of seedling emergence and total and marketable yields compared to other treatments. The remaining three treatments did not differ significantly among each other with respect to percent seedling emergence and total and marketable yields. Results of this study indicated that under the conditions followed in these trials, H2O2 had no negative effect on sprouting, seedling emergence or yield. This is the first study of its kind to examine the effect of storage treatment of potatoes with H2O2 before planting on yield parameters of potato, including emergence, yield, size and weight of harvested tubers.

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