The expressed sap of corn plants as an indicator of nutrient needs
Pettinger, N.A.
The expressed sap of corn plants as an indicator of nutrient needs - USA : USDA publications, 1931 - Printed
Text in English
Maize
Nutrients
Crops
Seedlings
Fertility
Soil
The expressed sap of corn plants as an indicator of nutrient needs - USA : USDA publications, 1931 - Printed
Text in English
Maize
Nutrients
Crops
Seedlings
Fertility
Soil