TY  - BK
AU  - Lal,R.
ED  - Conference Role of Soil Physical Properties in Maintaining Productivity of Tropical Soils
TI  - Soil tillage and crop production
T2  - IITA Proceedings Series
U1  - 631.51 
PY  - 1979///
PB  - Ibadan, NG; IITA, 
KW  - Botswana
KW  - Cowpeas
KW  - Farmyard manure
KW  - Flooded rice
KW  - Food production
KW  - German federal republic
KW  - Humid tropics
KW  - Legumes
KW  - AGROVOC
KW  - Liberia
KW  - Loess soils
KW  - Malaysia
KW  - Manihot esculenta
KW  - Mechanization
KW  - Microclimate
KW  - Nigeria
KW  - Oil palms
KW  - Plant production
KW  - Rice
KW  - Root nodulation
KW  - Semiarid zones
KW  - Soil
KW  - Soil chemicophysical properties
KW  - Soil conservation
KW  - Soil management
KW  - Soil water
KW  - Soil water content
KW  - Sowing
KW  - Soybeans
KW  - Surface irrigation
KW  - Tanzania
KW  - Venezuela
KW  - Water management
KW  - Zero tillage
KW  - Zea mays
KW  - Tillage
KW  - Farming systems
N1  - Illustrations, tables, graphs, appendices
ER  -