Not exact matches
Soybean farmers in Africa may either only have access to a few seed
varieties with an unimpressive
yield potential, or a few high -
yielding varieties for which no performance
data exists for their latitude and altitude.
All
yield data are for dryland (non-irrigated) hard red winter wheat, including 245
varieties.
Although the review
yielded a large database encompassing a wide
variety of crude oils and their properties, it also illustrated the difficulty in utilizing available
data as the basis for accurately defining and meaningfully comparing crude oils.
I did a
variety of experiments using the same
data set as before, melding the Moody's Bond
yields with Robert Shiller's S&P 500
data.
Investors can sort and search the
data by a
variety of criteria and broad categories, such as
yields, ratings, or prices.
These guys (e.g. Lobell) try to explain the level and trend of crop
yields (often on a grid scale covering the globe, given you have sufficient
data) using statistical models that include all kinds of independent variables (soils, input use,
varieties, pressure by pests, management etc.).