Evaluation of sugarcane varieties under drought condition

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dc.contributor.advisorKumar, Navnit
dc.contributor.authorPankaj, Bhanupriya
dc.date.accessioned2020-02-03T07:20:47Z
dc.date.available2020-02-03T07:20:47Z
dc.date.issued2019
dc.description.abstractA field experiment employing six elite sugarcane varieties, namlely CoP 16437, CoP 112, BO 153, CoP 2061, BO 154 and CoP 9437 along with two different irrigation regimes (IW: CPE ratio 1.0 and 0.3) was conducted during spring season of 2018-19 at Sugarcane Research Institute, RPCAU, Pusa, Bihar to evaluate growth, yield and quality of sugarcane varieties as well as economics under drought condition. Thus, twelve treatments were tested in strip plot design in three replications with row spacing of 90 cm. The soil of experimental field was sandy loam in texture, calcareous in nature (29.2%), alkaline in reaction (8.3), low in organic carbon (0.44%), available nitrogen (210.0 kg/ha) and phosphorus (21.6 kg/ha) while medium in potassium content (145.5 kg/ha). Different treatments had significant impact on growth, yield and quality parameters of sugarcane. Highest final germination count was recorded with CoP 2061 which was significantly higher over CoP 9437. Experimental data indicated that variety CoP 2061 produced significantly highest plant population at all the stages of growth which contributed to higher number of millable canes (1,30,200/ha) at harvest. Similarly, Variety CoP 2061 recorded maximum leaf area index and gave tallest plants at all the stages of observations. Experimental results further revealed that maximum dry matter production was noticed in variety CoP 16437 with constant increase till harvest which resulted to maximum single cane weight (1070 g/plant) with thickest cane (2.80 cm). Variety CoP 2061 also obtained maximum number of nodes/cane (32.0) which was significantly superior over the number of nodes obtained in CoP 16437 and BO 153 though variety BO 153 recorded highest internode length (11.03 cm) which was statistically similar to CoP 16437 (11.0 cm) and CoP 112 (10.22 cm). CoP 2061 gave highest cane: top ratio and water use efficiency. The recorded data further revealed that, maximum brix, pol, juice recovery and CCS per cent were computed in variety CoP 16437 at 10th and 12th month stage. Variety CoP 16437 recorded highest purity per cent at 10th month stage while BO 153 gave highest purity per cent at 12th month stage. CoP 2061 recorded maximum cane yield (91.0 t/ha), however, maximum sugar yield (11.02 t/ha) was produced with CoP 16437 follwed by CoP 2061 (10.73 t/ha) and CoP 9437(10.18 t/ha). Economic analysis of data showed that highest gross returns (2,65,737 `/ha), net returns (1,41,627 `/ha) and B: C ratio (1.13) was found with variety CoP 2061. Different irrigation regimes did not exert significant effect on germination count. Maximum plant population and number of millable canes were recorded with IW: CPE ratio 1.0. Significantly higher leaf area index obtained with IW: CPE ratio 1.0 at 100, 150 and 200 DAP except 50 DAP. Similarly, maximum dry matter accumulation recorded with IW: CPE ratio 1.0 at all the stages of observation except 50 DAP. IW: CPE ratio 1.0 produced taller plant than 0.3. There was no marked effect of irrigation regimes on cane diameter, internode length and water use efficiency but showed comparatively higher values with IW: CPE ratio 1.0. In terms of number of nodes/cane, single cane weight, cane: top ratio irrigation regime IW: CPE ratio 1.0 was found significantly superior over 0.3. There was no significant difference on brix, pol, purity and CCS per cent due to irrigation regimes but produced significant impact on juice recovery per cent. As regarding yield, highest cane (94.0 t/ha) and sugar yield (11.72 t/ha) were achieved with IW: CPE ratio 1.0 and found significantly superior to 0.3. In terms of highest monetary returns, maximum gross returns (2,72,503 `/ha), net returns (1,45,174 `/ha) and B: C ratio (1.14) was registered with IW: CPE ratio 1.0. It can be concluded that growth, yield and quality of majority of sugarcane varieties were adversely affected due to drought like situation and CoP 2061 would be recommended to maximize productivity and profitability in drought areas of Bihar.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810142367
dc.keywordsAgronomy, Sugarcane, CoP 16437, CoP 112, BO 153, CoP 2061, BO 154 ,CoP 9437, Drought condition,en_US
dc.language.isoenen_US
dc.publisherDRPCAU, Pusa, Samastipuren_US
dc.subAgronomyen_US
dc.subjectnullen_US
dc.themeEvaluation of sugarcane varieties under drought conditionen_US
dc.these.typeM.Scen_US
dc.titleEvaluation of sugarcane varieties under drought conditionen_US
dc.typeThesisen_US
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