Response of sugarbeet genotypes to nitrogen, potassium, planting methods and dates of sowing in deccan plateau of peninsular India
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Date
2013
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UAS Dharwad
Abstract
The field experiments were conducted at Agricultural Research Station, Mudhol
(UAS, Dharwad) during rabi season of 2011 and 2012 to study the “Response of sugarbeet
genotypes to nitrogen, potassium, planting methods and dates of sowing”.
In the first experiment, three sugarbeet genotypes (SZ 35, PAC 60008 and Magnolia) were
allotted to main plots and five N and K2O levels (100, 120, 140, 160 and 180 kg N & K2O ha-
1) to sub plots and were replicated thrice in split plot design. Magnolia with application of N
and K2O @ 160 kg ha-1 recorded significantly higher root, top and sugar yield (58.11, 14.93
and 8.61 t ha-1 respectively) with maximum net returns and B:C (Rs. 80,225 ha-1 and 2.97
respectively). Genotype PAC 60008 showed better performance in its quality.
In the second experiment, two planting methods viz., broad bed and furrows (BBF) & ridges
and furrows and four dates of sowing viz., 1st fortnights (FN) of August, September, October
and November were evaluated in strip plot design with five replications. Growth, yield
attributes and yield were significantly higher in BBF among planting methods and October 1st
fortnight among the sowing dates. The sugarbeet planted during August 1st FN was poor in its
quality, whereas other dates of sowing showed better quality. Planting in October 1st FN on
BBF produced significantly higher growth, yield attributes and root yield (55.15 t ha-1) with
higher net returns and B:C (Rs. 81,656 ha-1 and 3.56 respectively).
The organoleptic evaluation of wine prepared out of Calixta with TSS level of 13.8 0brix
recorded highest score for its commercial acceptability. Calixta or Magnolia with TSS
modification to 23 0brix may be preferred for commercial alcohol production.
Planting during October 1st FN on BBF (paired rows), with the fertilizer recommendation of
160:60:160 kg N, P2O5 and K2O ha-1 recorded higher yield. Genotype either Magnolia or
PAC 60008 can be preferred.