 | | | |
|---|
| WA-09F | Influence of Tillage and Phosphorus Rate in Placement on Corn and Bean Yields | |
| WA-14 | Root Responses to Fertilizer Placement and Source | |
 | field variability |
| |
 | Eastern Canada & Northeast U.S. |
| |
| Northcentral China |
| |
|
| |
| Northeast India & Bangladesh |
| |
|
| |
| MEXICO-47 | Site-specific diagnosis of fertility and productivity of Queretaro Valley soils using global positioning (GPS) and geographic information (GIS) systems | |
|
| |
| Southern India & Sri Lanka |
| |
|
| |
| flax |
| |
|
| |
| forages |
| |
|
| |
| grid sampling |
| |
|
| |
| iron |
| |
|
| |
| legumes |
| |
|
| |
| manganese |
| |
|
| |
| maximum economic yield (MEY) |
| |
|
| |
| nitrogen |
| |
|
| |
| nutrient management |
| |
|
| |
