Effect of combined application of silicon and mycorrhizal fungi on growth and yield of rice under water-deficit stress | |
| Author | Basar, Noor Ul |
| Call Number | AIT Thesis no.AS-20-03 |
| Subject(s) | Plants--Drought tolerance Plants--Effect of drought on Mycorrhizal fungi Silicon Rice |
| Note | A Thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Agricultural Systems and Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Drought stress is a major concern in agriculture due to its associated yield losses in different crops including rice (Oryza sativa). Rice crop is highly sensitive to water deficit stress due to its high-water requirements; therefore, significant losses in yield occurs when rice crop is hit by drought particularly at the reproductive stage of crop growth. AM fungi and Si have been proven beneficial in the alleviation of different stresses of both biotic and abiotic nature. A polyhouse experiment was designed to investigate the potential of Si and AM fungi, both individually and in combination on the alleviation of water deficit stress in rice. Treatments were consisted of four Si doses as soil incorporation (0, 75, 150 and 300 kg ha ̶1 ), three irrigation levels (100%, 75% and 50% [FC]) and two levels of mycorrhiza (no application of mycorrhiza, and mycorrhizal application @ 12g pot ̶1 ). Data on various growth and yield parameters were collected and were analyzed for the significance of AM fungi and Si in the alleviation of drought stress. Results revealed that both AM fungi and Si had significant influence on the alleviation of water deficit stress in rice. Further, results showed that the combined effect of Si and AM fungi was more significant than their individual effect. Plants had better performance at 300 kg ha ̶1 in combination with mycorrhiza across all irrigation levels. Therefore, Si application at the rate of 300 kg ha ̶1 integrated with mycorrhiza is recommended for better performance of the tested rice variety under water deficit environment. |
| Year | 2020 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural Systems and Engineering (ASE) |
| Chairperson(s) | Datta, Avishek; |
| Examination Committee(s) | Loc, Thai Nguyen;Salin, Krishna R.; |
| Scholarship Donor(s) | Her Majesty the Queen’s Scholarships (Thailand); |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2020 |