Effect of pod growth stage at harvest on the yield of yard long bean (Vigna unguiculata, subsp. sesquipedalis) | |
| Author | Peldon, Kuenzang |
| Call Number | AIT Thesis no.AS-07-15 |
| Subject(s) | Pods (Botany) Cowpea--Seeds |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Agricultural Systems & Engineering School of Environment, Resources and Development, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. AS-07-15 |
| Abstract | A good yard long bean seeds were sown to obtain seeds of different maturity stages and to find out the critical time when a seed attains its actual viability. Germination count of each of the seed development stages was carried out and the possibility of prolonging the pod production phase of the yard long bean plant was explored to increase the flower and pod production by harvesting pods at a stage just before the seeds attain its viability. The experiment was carried out in the Agricultural Research farm in Asian Institute of Technology, Pathumthani, Thailand from 27`h September, 2006 to 25th April, 2007. There were eleven seed maturity stages harvested from the first stage of the experiment (pods were harvested starting from 7 days after flowering (DAF) till 27 days after flowering with an interval of two days between two consecutive harvests). The viability test carried out with Tetrazolium Chloride (TTC) salt test showed that all maturity stages were viable except for the 7 and 9 days after flowering. The germination count and plant vigor observation were carried out in greenhouse. The maturity stages starting from 11 days after flowering till 27 days after flowering showed good germination count as well as high plant vigor. The yard long bean pods were harvested at various harvest intervals, and there were eight harvesting frequencies with a day in between two harvest frequencies. The harvest frequencies of 7 and 8 DAF gave highest pod yield per vine as well as the highest number of pods per vine compared to the rest of harvesting intervals. There was a significant interaction between maturity stages and harvest intervals on the number of pods produced per vine. The combination of seed maturity stages 13, 15 and 17 days after flowering with harvesting intervals of Mays after flowering gave the highest number of pods per vine resulting in the highest pod yield of the yard long beans. |
| Year | 2007 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AS-07-15 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Aquatic Systems(AS) |
| Chairperson(s) | Ranamukhaarachchi, SL; |
| Examination Committee(s) | Shivakoti, Ganesh P.;Jayasuriya, Hemantha P.; |
| Scholarship Donor(s) | AUSTRIA; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2007 |