| 501 | ||
| Researcher: | Chandrasekaran, A | |
| Guide: | Kothandaraman, G V | |
| University: | Tamil Nadu Agricultural University | |
| Language: | English | |
| 502 | Transformation and fertilizer nitrogen balance in flooded rice system using 15 N techniques | |
| Researcher: | Natarajan, K | |
| Guide: | Manickam, T S | |
| University: | Tamil Nadu Agricultural University | |
| Language: | English | |
| 503 | Investigations on soil copper and crop response in selected soils of North Karnataka | |
| Researcher: | Raghupathi, H B | |
| Guide: | Vasuki, N | |
| University: | University of Agricultural Sciences | |
| Language: | English | |
| 504 | ||
| Researcher: | Sadaria, Devshibhai Tapubhai | |
| Guide: | Patil, V K | |
| University: | Marathwada Krishi Vidyapeeth | |
| Language: | English | |
| 505 | ||
| Researcher: | Valia, Ranabhai Zunzabhai | |
| Guide: | Patil, V K | |
| University: | Marathwada Krishi Vidyapeeth | |
| Language: | English | |
| 506 | Transformation and availability of nutrients in salt affected soil | |
| Researcher: | Srivastava, Anoop Kumar | |
| Guide: | Srivastava, O P | |
| University: | Banaras Hindu University | |
| Language: | English | |
| 507 | ||
| Researcher: | Rajagopalan, Ramachandra Ayyar | |
| University: | University of Mumbai, Mumbai | |
| Language: | English | |
| Shodhganga | ||
| 508 | ||
| Researcher: | Kar, Ranjit | |
| Guide: | Sanyal, S K | |
| University: | Bidhan Chandra Krishi Vishwavidyalaya | |
| Language: | English | |
| 509 | influence of different levels of organic matter on the fate of urea in wheat-rice cropping sequence | |
| Researcher: | Lavanya, P G | |
| Guide: | Jain, J M L | |
| University: | Indian Agricultural Research Institute | |
| Language: | English | |
| 510 | ||
| Researcher: | Sahoo, Badal Chandra | |
| Guide: | Das, A K | |
| University: | Bidhan Chandra Krishi Vishwavidyalaya | |
| Language: | English | |
| 511 | ||
| Researcher: | Abrol, I P | |
| University: | Indian Agricultural Research Institute | |
| Language: | English | |
| 512 | ||
| Researcher: | Banerjee, Arun Kumar | |
| University: | University of Allahabad | |
| Language: | English | |
| 513 | ||
| Researcher: | Banerjee, Nimai Kumar | |
| University: | University of Allahabad | |
| Language: | English | |
| 514 | ||
| Researcher: | Gandhi, Amritlal J | |
| University: | Gujarat University | |
| Language: | English | |
| 515 | ||
| Researcher: | Hari Shanker | |
| University: | University of Allahabad | |
| Language: | English | |
| 516 | ||
| Researcher: | Kripa Shanker Singh | |
| University: | University of Allahabad | |
| Language: | English | |
| 517 | ||
| Researcher: | Patel, Nandubhai Ambalal | |
| University: | Gujarat University | |
| Language: | English | |
| 518 | ||
| Researcher: | Pratap Narain Singh | |
| University: | University of Allahabad | |
| Language: | English | |
| 519 | ||
| Researcher: | Raghubir Singh | |
| University: | University of Allahabad | |
| Language: | English | |
| 520 | Physico-chemical studies of some saline and alkali soil problems | |
| Researcher: | Ramzan, M | |
| University: | Indian Agricultural Research Institute | |
| Language: | English | |