Partial substitution of pottasium with sodium in sweet potatto
By: Joggy Mariam George.
Contributor(s): Chandrasekharan P (Guide).
Material type:
BookPublisher: Vellayani Department of Agronomy, College of Agriculture 1995DDC classification: 630 Online resources: Click here to access online Dissertation note: MSc Abstract: An investigation was carried out at Instructional Farm, College of Agriculture, Vellayani to study the effect of substituting potassium with sodium in varying levels in sweet potato. The levels of substitution consists of 0, 12.5, 25, 50 and 75 per cent, as potassium and sodium on equivalent basis. The trial was laid out in RBD with four replications.
Partial substitution of potassium with sodium to the extent of 50 per cent increased the growth attributes like length of vine, number of branches plant -1 and LAI at all growth stages. Physiological parameters like TBR and CGR were increased due to the combined application of potassium and sodium on 50:50 ratio.
Marketable tuber yield and yield attributes like number of tubers plant-1, length of tuber and girth of tuber were increased by the combined application of both the cations.
Combined application of potassium and sodium increased the quality attributes of tubers like starch, protein and total sugar. Cooking qualities was also found to be better when potassium and sodium were applied together. Pest incidence was also reduced when both the cations were applied in 50:50 ratio.
Combined application of K and Na produced maximum N, P and Na content in tubers whereas K content was maximum at zero per cent substitution. Uptake of nutrients (N, P, K and Na) were maximum at 50 per cent substitution.
Soil properties like pH, Ec, water holding capacity, available potassium and sodium were not affected by treatments.
Physiological efficiency of N, P and Na were found to be maximum at 0 per cent substitution whereas that of K was maximum at 75 per cent substitution. Agronomic efficiency and recovery fraction of N, P and Na was found to be increased in the presence of both cations.
Fifty per cent substitution of potassium by sodium was more economic than the existing package of Practices Recommendation.
| Item type | Current location | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|
Theses
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KAU Central Library, Thrissur Theses | 630 JOG/PA (Browse shelf) | Available | 170899 |
MSc
An investigation was carried out at Instructional Farm, College of Agriculture, Vellayani to study the effect of substituting potassium with sodium in varying levels in sweet potato. The levels of substitution consists of 0, 12.5, 25, 50 and 75 per cent, as potassium and sodium on equivalent basis. The trial was laid out in RBD with four replications.
Partial substitution of potassium with sodium to the extent of 50 per cent increased the growth attributes like length of vine, number of branches plant -1 and LAI at all growth stages. Physiological parameters like TBR and CGR were increased due to the combined application of potassium and sodium on 50:50 ratio.
Marketable tuber yield and yield attributes like number of tubers plant-1, length of tuber and girth of tuber were increased by the combined application of both the cations.
Combined application of potassium and sodium increased the quality attributes of tubers like starch, protein and total sugar. Cooking qualities was also found to be better when potassium and sodium were applied together. Pest incidence was also reduced when both the cations were applied in 50:50 ratio.
Combined application of K and Na produced maximum N, P and Na content in tubers whereas K content was maximum at zero per cent substitution. Uptake of nutrients (N, P, K and Na) were maximum at 50 per cent substitution.
Soil properties like pH, Ec, water holding capacity, available potassium and sodium were not affected by treatments.
Physiological efficiency of N, P and Na were found to be maximum at 0 per cent substitution whereas that of K was maximum at 75 per cent substitution. Agronomic efficiency and recovery fraction of N, P and Na was found to be increased in the presence of both cations.
Fifty per cent substitution of potassium by sodium was more economic than the existing package of Practices Recommendation.
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