results of a nationwide survey to determine feedstuffs fed to lactating dairy cows.a nationwide survey to determine feedstuffs used in the diets of dairy cows was conducted. this survey was mailed to dairy nutritionists at universities in each state to describe the use of 144 feedstuffs. twenty-eight states responded and were grouped by region as follows: northeast (maine, maryland, new hampshire, new york, ohio, vermont, and west virginia), northwest (idaho, oregon, and washington), midwest (iowa, illinois, michigan, minnesota, missouri, nebraska, north dakota, south dakota, ...199910068966
active-optical sensors using red ndvi compared to red edge ndvi for prediction of corn grain yield in north dakota, sensor readings from an n non-limiting area standard established within a farm field are used to predict yield in the standard. lower yield predictions from sensor readings obtained from other parts of the field outside of the n non-limiting standard area indicate a need for supplemental n. active-optical sensor algorithms for predicting corn (zea mays, l.) yield to direct in-season nitrogen (n) fertilization in corn utilize red ndvi (normalized differential vegetative index). use ...201526540057
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