Farm Science Reporter


Many an Iowa farmer is aware that some day he may need to use commercial fertilizer, especially phosphate, in order to produce crops satisfactorily. He wonders, "Has that time arrived? Could I profitably increase my crop yields by applying fertilizer?"

Included in

Agriculture Commons



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.