TY  - BOOK
AU  - Ayotade, K. A. 
TI  - Effects of nitrogen on phosphorus, iron and zinc nutrition of rice in a Nigerian vertisol
AV  - QK898 .N5 .A9 1988 
PY  - 1988///
CY  - Ibadan
PB  - University of Ibadan
KW  - Assimilation of nitrogen -
KW  - Plant food -
KW  - Rice -
KW  - Nigeria
ER  -