Simulation of potato cultivars response to planting dates in a sub-tropical environment using SUBSTOR-Potato model
| dc.contributor.advisor | Raj Singh | |
| dc.contributor.author | Yogesh Kumar | |
| dc.date.accessioned | 2020-01-04T06:40:52Z | |
| dc.date.available | 2020-01-04T06:40:52Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | Field experiment entitled “Simulation of potato cultivars response to planting dates in a sub-tropical environment using SUBSTOR-Potato model” was conducted during Rabi season (2016- 17 and 2017-18) at research farm of Department of Agricultural Meteorology, CCS HAU, Hisar (Lat. - 29° 10 N, Long. - 75° 46 E and altitude 215.2 amsl). The experiment was comprised of four planting dates main plot treatments namely (D1) -8th October, (D2) - 22th October, (D3) – 5th November (D4) – 15th November; sub plot treatments comprising three different cultivars viz. (V1)- Kufri Bahar, (V2)- Kufri Pushkar and (V3)- Kufri Surya. The experiment was laid out in split-split plot design with four replications. Different agrometeorological indices viz. AGDD, AHTU, APTU, RUE and TUE accumulation was significantly higher under second planting dates at various phenophases in comparison to the other planting dates. Among varying planting dates for evaluation of effect of planting time on growth, development and yield parameters of potato, second planting date (D2- 22th October) resulted in better overall growth and produced higher tuber and haulm yield as compared to first planting dates (D1), third (D3) and fourth planting dates (D4) in both the crop seasons. While, among varieties, Kufri Pushkar produced highest tuber yield with better yield attributes as compared to Kufri Bahar and Kufri Surya, in both the crop seasons. In respect of phenological observations, agrometeorological indices and growth parameters shows better in 22th October sown crop with variety Kufri Pushkar, among different planting dates and varieties. The micrometeorological parameters were performed better in 22th October sown crop under different planting dates. Temperature profiles were inverse throughout the day with in the crop canopy. Over the top of the crop canopy the temperature profiles was lapse. The relative humidity profiles were lapse inside the crop canopy throughout the day except at 9:00 AM hours, iso-humic at different phenophases during both crop seasons. SUBSTOR-Potato model was calibrated for the 2016-17 and derived their genetic coefficients and further outputs were validated for second season 2017-18. The results revealed that comparison of observed and simulated days to tuber initiation and physiological maturity were in good agreement in Sub-tropical environment. The simulated tuber yield under D1 and D3 planting, model simulation under estimated and the rest of planting dates it showed over estimation results. Simulation performance of the model was found satisfactory and over estimated by the model with reasonable agreement (±10 %). The model has proved to a suitable tool for optimization in potato management, prediction of phenology and estimates potential yield. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810139324 | |
| dc.keywords | Potato, growth and yield parameters, micrometeorological studies, DSSAT, SUBSTOR-Potato, Planting dates, Potato cultivars | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | CCSHAU | en_US |
| dc.sub | Agricultural Meteorology | en_US |
| dc.subject | null | en_US |
| dc.theme | Simulation of potato cultivars response to planting dates in a sub-tropical environment using SUBSTOR-Potato model | en_US |
| dc.these.type | Ph.D | en_US |
| dc.title | Simulation of potato cultivars response to planting dates in a sub-tropical environment using SUBSTOR-Potato model | en_US |
| dc.type | Thesis | en_US |