Effect of nitrogen application rate and caltivation method on growth, yield and nitrogen use efficiency of rice under alternate wetting and drying irrigation | |
| Author | Hadi, Sholih Nugroho |
| Call Number | AIT Thesis no.AS-18-02 |
| Subject(s) | Rice--Planting Rice--Water requirements Nitrogen in agriculture Nitrogen fertilizers |
| 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 | There is a pressing need to improve crop management practices to combat the challenges of crop production with decreasing water availability. Alternate wetting and drying (AWD) is a popular water saving technology to deal with water scarcity. Cultivation practice such as dry and wet direct seeding of rice may also reduce water use. Previous rice cultivation management practices using continuous flooding in growing rice, as well as the practices in nitrogen (N) fertilization might have no longer appropriate in AWD practices. The pot experiment was conducted to investigate the effects of nitrogen fertilizer rate, cultivation methods and variety on the growth, yield, and nitrogen use efficiency (NUE). The treatments were laid out in a completely randomized design (CRD) composed of five different N rate (0, 30, 60, 90 and 120 kg N ha-1 ), three different cultivation method (transplanting, dry direct seeding, wet direct seeding), and two varieties (Pathumthani 1 and RD57). The experiment showed that N rate affected plant height, tiller number, greenness intensity and shoot dry matter. Transplanting (TPR) produced more tillers than direct seeded rice (DSR). N rate affected positively on panicle number per plant, panicle length, spikelet number per panicle, filled grain percentage per panicle, and 100-grain weight. Among yield components, the number of panicle was the most determinant factors affecting grain yield (R2=0.8). RD 57 generated more yield (6.3%) than Pathumthani 1. The highest grain yield was achived at 120 kg N ha-1 amounting 47 g/plant. N rate increased N uptake up to 133% but reduce agronomic efficiency (AEN), and psicological efficiency (PEN). RD 57 was higher recovery efficiency (16%) than Pathumthani 1. Application of 120 kg N ha-1 by using RD 57 were recommended. |
| Year | 2018 |
| 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) | Soni, Peeyush;Kuwornu, John K.M. |
| Scholarship Donor(s) | Indonesian Agency for Agricultural Research and Development (IAARD) |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2018 |