Author(s):

Pooja Pandey, Manoj Raghav, Jyoti Bajeli and Arunima Tripathi

Abstract: Efficient use of nitrogen fertilizer for plant growth is critical both from economic as well as environmental aspect. Hence, to study the effect of nitrogen scheduling on growth and yield of potato, a two year research experiment was carried out at Vegetable Research Centre, GBPUAT, Pantnagar, India during Rabi season of 2014-15 and 2015-16. The experiment was consisted of ten treatments (nitrogen schedules) replicated thrice in Randomized Complete Block Design. All the cultural practices were carried out under scientific management. During the study, various observations such as emergence per-cent, growth and yield attributes were evaluated in response to various nitrogen levels. The emergence per-cent was recorded at 20 and 30 DAP. The growth characters viz. Plant height, number of haulms, number of leaves, diameter of haulm and dry weight per plant were recorded at 30 DAP, 45 DAP, 60 DAP and at de-haulming stage whereas the yield and yield attributing characters were recorded at the time of harvest. Significant variations were observed among all the treatments with respect to the growth and yield characters except emergence per-cent and number of haulms per plant. The study revealed that split application of nitrogen was found most effective for potato growth and tuber bulking. Among the ten treatments, 25% N of RDF as basal + 50% top dressing at 25 DAP + one foliar spray of urea @ 3% at 40 DAP was proved the best with respect to growth as well as tuber yield.

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