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20134
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Subject: Agronomy × End date: 2013 × Start date: 2013 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Response of sugarbeet genotypes to nitrogen, potassium, planting methods and dates of sowing in deccan plateau of peninsular India
    (UAS Dharwad, 2013) Harish H. Deshpande; C. S. Hunshal
    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.
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    ThesisItemOpen Access
    Response of sugar beet genotypes to sowing dates, graded levels of major nutrients and time of harvest under tropical conditions
    (UAS Dharwad, 2013) Kumar D. Lamani; S. I. Halikatti
    Field experiments were conducted at ARS, Bailhongal during 2005-06 and 2006-07. Sowing dates experiment comprised of 12 monthly dates (I FN) in main plot and two genotypes in subplots laid out in split plot design. Nutrient management trial comprised of three factors of N (60, 120 and 180 kg ha-1), P2O5 (30, 60 and 90 kg ha-1) and K2O (60, 90 and 120 kg ha-1) laid out in RBD with absolute control. Harvesting dates trial comprised of three genotypes in main plot and six harvesting dates in subplot laid out in split plot design. Higher tuber yield (105.77 t ha-1) was recorded when the crop was sown on October I fortnight (FN) over the other sowing dates and it was on par with September I FN sown sugar beet (102.47 t ha-1). Sowing of sugar beet in October I FN recorded significantly higher sucrose content (18.75%) which was on par with September I FN (18.25%) and November I FN (18.09%). Sugar beet sown in October and September I FN recorded significantly higher net returns (Rs. 90122 and 86160 ha-1) and B:C ratio (3.45 and 3.34), respectively. Sowing of Cauvery genotype recorded significantly higher sugar beet tuber yield (79.14 t ha-1) than Indus genotype (73.42 t ha-1). The combined application of N120 P2O5 60 K2O 90 and N120 P2O5 60 K2O 120 recorded higher tuber yield (112.1 and 115.2 t ha-1, respectively) over other combinations. Significantly higher sucrose content (20.54%) was obtained by applying 60:90:90 kg ha-1 of N, P2O5 and K2O, respectively. Sucrose content decreased significantly with increasing N levels from 60 (18.41%) to 180 (17.49%) kg ha-1. Whereas, sucrose content increased with increasing K2O levels from 60 (17.47%) to 120 (18.46%) kg ha-1. Also increasing application of P2O5 from 30 to 60 kg ha-1 increased the sucrose content. Impurities and sucrose content are negatively correlated. Application of 120:60:90 kg N, P2O5 and K2O ha-1 recorded the highest net returns (Rs. 103280 ha-1) and B:C ratio (4.31) and was on par with 120:60:120 kg N, P2O5 and K2O ha-1. Sugar beet harvested on 5, 5½ and 6 months recorded significantly higher tuber yield (100.4 – 106.1 t ha-1) and sucrose content (19.30, 18.94 and 18.77%, respectively) as compared to sucrose content either in early harvesting 4½ month (18.48%) or delayed harvesting at 6½ and 7 months (18.33 and 16.12%). Early harvesting at 4½ months reduced the tuber yield drastically. Delayed harvesting upto 6½ months did not have any adverse effect on quality. Cauvery genotype recorded significantly higher tuber yield (108.1 t ha-1), net returns (Rs. 92129 ha-1) and B:C ratio (3.45) as compared to Indus (83.90 t ha-1, Rs. 63062 ha-1, 2.68, respectively) but on par with Interprice Brucille.
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    ThesisItemOpen Access
    Response of sugar beet genotypes to sowing dates, graded levels of major nutrients and time of harvest under tropical conditions
    (UAS Dharwad, 2013) Kumar D. Lamani; S. I. Halikatti
    Field experiments were conducted at ARS, Bailhongal during 2005-06 and 2006-07. Sowing dates experiment comprised of 12 monthly dates (I FN) in main plot and two genotypes in subplots laid out in split plot design. Nutrient management trial comprised of three factors of N (60, 120 and 180 kg ha-1), P2O5 (30, 60 and 90 kg ha-1) and K2O (60, 90 and 120 kg ha-1) laid out in RBD with absolute control. Harvesting dates trial comprised of three genotypes in main plot and six harvesting dates in subplot laid out in split plot design. Higher tuber yield (105.77 t ha-1) was recorded when the crop was sown on October I fortnight (FN) over the other sowing dates and it was on par with September I FN sown sugar beet (102.47 t ha-1). Sowing of sugar beet in October I FN recorded significantly higher sucrose content (18.75%) which was on par with September I FN (18.25%) and November I FN (18.09%). Sugar beet sown in October and September I FN recorded significantly higher net returns (Rs. 90122 and 86160 ha-1) and B:C ratio (3.45 and 3.34), respectively. Sowing of Cauvery genotype recorded significantly higher sugar beet tuber yield (79.14 t ha-1) than Indus genotype (73.42 t ha-1). The combined application of N120 P2O5 60 K2O 90 and N120 P2O5 60 K2O 120 recorded higher tuber yield (112.1 and 115.2 t ha-1, respectively) over other combinations. Significantly higher sucrose content (20.54%) was obtained by applying 60:90:90 kg ha-1 of N, P2O5 and K2O, respectively. Sucrose content decreased significantly with increasing N levels from 60 (18.41%) to 180 (17.49%) kg ha-1. Whereas, sucrose content increased with increasing K2O levels from 60 (17.47%) to 120 (18.46%) kg ha-1. Also increasing application of P2O5 from 30 to 60 kg ha-1 increased the sucrose content. Impurities and sucrose content are negatively correlated. Application of 120:60:90 kg N, P2O5 and K2O ha-1 recorded the highest net returns (Rs. 103280 ha-1) and B:C ratio (4.31) and was on par with 120:60:120 kg N, P2O5 and K2O ha-1. Sugar beet harvested on 5, 5½ and 6 months recorded significantly higher tuber yield (100.4 – 106.1 t ha-1) and sucrose content (19.30, 18.94 and 18.77%, respectively) as compared to sucrose content either in early harvesting 4½ month (18.48%) or delayed harvesting at 6½ and 7 months (18.33 and 16.12%). Early harvesting at 4½ months reduced the tuber yield drastically. Delayed harvesting upto 6½ months did not have any adverse effect on quality. Cauvery genotype recorded significantly higher tuber yield (108.1 t ha-1), net returns (Rs. 92129 ha-1) and B:C ratio (3.45) as compared to Indus (83.90 t ha-1, Rs. 63062 ha-1, 2.68, respectively) but on par with Interprice Brucille.
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    ThesisItemOpen Access
    Evaluation of sugar beet cultivars at different row proportions in intercropping with sugarcane and its nitrogen management
    (UAS Dharwad, 2013) Vishwanatha S.; S. M. Hiremath
    Two field experiments namely 1. Intercropping of sugar beet cultivars with different row proportions in sugarcane and 2. Performance of sugar beet to sources of nitrogen and liquid manures were conducted at Agricultural Research Station (ARS), Madhurakhandi (Dist. Bagalkot), University of Agricultural Sciences, Dharwad during the year 2010-11 and 2011-12. The first experiment consisted of evaluation of sugar beet cultivars (Cauvery, Shubhra, Magnolia and Calixta) with different row proportions (1:1, 1:2 and 1:3) in sugarcane. There were seventeen treatment combinations laid out in randomised complete block design with three replications. The second experiment was conducted to study the influence of sources of nitrogen (SN1, SN2, SN3, SN4 and SN5) and liquid manures (LM1, LM2, LM3, LM4 and LM5) on sugar beet. The experiment was laid out in split plot design with three replications where in sources of nitrogen and liquid manures were assigned to main and subplot, respectively. The results of first experiment indicated that sole sugarcane and sugarcane + sugar beet in 1:1 RP recorded significantly higher cane yield (101.39 and 96.66 (Avg. of all cultivars) t ha-1, respectively) and sugar yield (11.07 and 10.55 (Avg. of all cultivars) t ha-1, respectively) compared to sugarcane + sugar beet in 1:2 and 1:3 RP. Sugar beet cultivars Cauvery and Shubhra recorded significantly higher tuber (85.58 and 79.84 t ha-1, respectively) and sugar yield (9.76 and 9.00 t ha-1, respectively) in sole cropping than intercropping treatments. In intercropping system sugar beet cultivars Cauvery and Shubhra in 1:3 and 1:2 row proportions recorded significantly higher tuber and sugar yield than 1:1 RP. Intercropping of sugarcane + sugar beet in 1:2 and 1:3 RP recorded significantly higher sugarcane equivalent yield, LER, ATER, SPI, total sugar yield, net returns when compared to 1:1 RP, but B:C was significantly higher in 1:1 RP. In second trial, application of 100 per cent RDN (120 kg ha-1) through inorganic fertilizer (IF) along with foliar spray of vermiwash (VW) (20%) and cow urine (CU) (10%) at 30 and 60 DAS (SN1LM4) recorded significantly higher tuber (80.13 t ha-1), sugar yield (9.28 t ha-1), net returns (Rs. 64528 ha-1) and B:C (2.49) than other treatment combinations. However, application of 75 per cent RDN through IF + 25 per cent RDN through vermicompost and poultry manure in equal proportions along with foliar spray of VW (20%) and CU (10%) at 30 and 60 DAS (SN2LM4) remained on par with SN1LM4.