Sentences with phrase «crop yield ratio»
Circles represent weighted ratio mean estimates, error bars represent 95 % confidence limits for the weighted ratio; triangles represent the median crop yield ratio for all states included in the analysis.
http://journals.plos.org/ Not exact matches
The organic to conventional yield ratio varied widely among crops, and in some cases, among locations within a crop.
For example, Jesse Ausubel, Iddo Wernick, and Paul Waggoner break down changes in cropland area into five factors: population, per - capita income, food consumption, the ratio of crop production to the total supply of calories consumed by people, and crop yields.