TY  - BOOK
AU  - Ayotade, K.A
TI  - Effects of nitrogen on phosphorous, 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 -- Plant food -- Rice -- Nigeria
ER  -