Reports on several experiments are deferred until February when our next bulletin will be issued. We acknowledge with gratitude the donation of Mr. C. B. Souter, of Cedar Rapids, of two tons of slaughter house tankage fertilizer for experiment in growing crops. We have used numerous fertilizers on different crops during the past season, but will repeat all o f them before publishing indications
All cropping systems require fertilizer inputs in order to maintain crop yields. However, excess fer...
Lack of nitrogen limits corn production on most Iowa soils. Many Iowa farmers can use nitrogen ferti...
This archival publication may not reflect current scientific knowledge or recommendations. Current i...
For every ton of commercial fertilizer that Iowa farmers used 6 years ago, they are now using 9 tons...
Experimental work conducted by the Soils Section of the Iowa Agricultural Experiment Station and the...
Fundamental research on fertilizer technology has taken on a new significance in recent years as eng...
This archival publication may not reflect current scientific knowledge or recommendations. Current i...
One source of “ammunition” for the “war food front” which many an Iowa farmer should seriously consi...
A large share of the Director’s time last winter was occupied in work at farmer’s institutes; stock ...
Evaluation of nutrient availability in soils, and prediction of yield response to fertilization. C.A...
Depsite some of the highest yields in history, there were some expressions of disappointment with fe...
Caption title."Corn Belt Branch, Soil and Water Conservation Research Division, Agricultural Researc...
Many of the experiments carried out in the field in cooperation with Iowa farmers on some of the mor...
Nitrogen fertilizers have been accepted very rapidly in Iowa - so rapidly that on-farm knowledge of ...
The Oklahoma Agricultural Experiment Station periodically issues revisions to its publications. The ...
All cropping systems require fertilizer inputs in order to maintain crop yields. However, excess fer...
Lack of nitrogen limits corn production on most Iowa soils. Many Iowa farmers can use nitrogen ferti...
This archival publication may not reflect current scientific knowledge or recommendations. Current i...
For every ton of commercial fertilizer that Iowa farmers used 6 years ago, they are now using 9 tons...
Experimental work conducted by the Soils Section of the Iowa Agricultural Experiment Station and the...
Fundamental research on fertilizer technology has taken on a new significance in recent years as eng...
This archival publication may not reflect current scientific knowledge or recommendations. Current i...
One source of “ammunition” for the “war food front” which many an Iowa farmer should seriously consi...
A large share of the Director’s time last winter was occupied in work at farmer’s institutes; stock ...
Evaluation of nutrient availability in soils, and prediction of yield response to fertilization. C.A...
Depsite some of the highest yields in history, there were some expressions of disappointment with fe...
Caption title."Corn Belt Branch, Soil and Water Conservation Research Division, Agricultural Researc...
Many of the experiments carried out in the field in cooperation with Iowa farmers on some of the mor...
Nitrogen fertilizers have been accepted very rapidly in Iowa - so rapidly that on-farm knowledge of ...
The Oklahoma Agricultural Experiment Station periodically issues revisions to its publications. The ...
All cropping systems require fertilizer inputs in order to maintain crop yields. However, excess fer...
Lack of nitrogen limits corn production on most Iowa soils. Many Iowa farmers can use nitrogen ferti...
This archival publication may not reflect current scientific knowledge or recommendations. Current i...