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3. Interaction between different population levels of Meloidogyne incognita and Rhizobium on green gram;Chahal;J. Res. Pb. Agri. Univ.,1983
4. Effect of population density of Meloidogyne incognita on pea association with Rhizobium leguminosarum;Chahal;J. Res. Pb. Agri. Univ.,1984
5. Effect of Meloidogyne incognita and Rhizobium on growth of mungbean;Chahal;J. Res. Pb. Agri. Univ.,1985