| 1 | Availability of potassium in some Haryana soils in relation to minerals complementary ions and crops |
| Researcher: | Singh, Brij Pal |
| Guide: | Mahendra Singh |
| University: | Ch Charan Singh Haryana Agricultural University |
| Language: | English |
| 2 | Effect of salts on soil nitrogen mineralization in presence and absence of crops |
| Researcher: | Dahiya, Dharam Jeet |
| Guide: | Mahendra Singh |
| University: | Ch Charan Singh Haryana Agricultural University |
| Language: | English |
| 3 | |
| Researcher: | Bharat Singh |
| Guide: | Mahendra Singh |
| University: | Ch Charan Singh Haryana Agricultural University |
| Language: | English |
| 4 | To effect economy and to increase efficiency of nitrogenous ferilizers |
| Researcher: | Singh, Jai Karan |
| Guide: | Mahabir SinghMahendra Singh |
| University: | Ch Charan Singh University |
| Language: | English |