TY  - BOOK
AU  - GURNAM Singh
TI  - Toxicity of insecticides against mustard aphid, Lipaphis erysimi (Kaltenbach) in relation to supply of potassium to host-plants
U1  - T 632.752 G96T 
PY  - 1987///
CY  - Ludhiana
PB  - PAU
KW  - PLANT - LICE -- CONTROL
KW  - ENTOMOLOGY
KW  - INSECTICIDES -- TOXICOLOGY
KW  - INSECTS -- HOST PLANTS
KW  - SOILS -- POTASSIUM CONTENT
N2  - The study on the toxicity of four groups of insecticides was conducted against Lipaphis erysimi reared on raya and sarson grown in soil with four levels of potassium. The susceptibility of the aphid reared on the host-plants grown at increasing levels of
ER  -