R/wzRfun.R
soybeanwp.Rd
The tropical soils, usually poor in potassium (K),
demand potassium fertilization when cultivated with soybean
(Glycine max L.) to obtain satisfactory yields. The aim
of this study was to evaluate the effects of K doses and soil
humidity levels on soybean agronomic characteristics. The
experiment was carried out in a greenhouse, in pots with two
plants, containing 5 dm$^3$ of soil. The experimental design was
completely randomized block with treatments in a 5 x 3 factorial
arrangement. The K doses (potassium
) were 0; 30; 60, 120
and 180 mg dm\(^{-3}\) , and the soil humidity (water
)
ranged from 35 to 40; 47.5 to 52.5; and 60 to 65% of the total
porosity (represented as the midpoint). The characteristics
appraised were: grain yield (yield
, grams per plot),
weight of a hundred grains (w100
, grams), total number of
grains per plot (tg
), K concentration in the grain
(Kgrain
, g kg\(^{-1}\)), number of viable and not viable
pods (nvp, nip
). Observation number 74 can be considered
atypical and removed to do statistical analysis. although the
experiment had been installed in blocks, the greenhouse had
constant conditions for all plots and the management, like
irrigation, during the experimental cycle was carried out with
much care, so, the block effect can be considered null.
soybeanwp
A data frame with data from an experiment that evaluated the effect of water and potassium levels on soybean yield.
This experiment was done at Universidade Federal da Grande Dourados in Dourados, Mato Grosso do Sul, Brazil. The article based on this experiment can be accessed by the link http://ccarevista.ufc.br/seer/index.php/ccarevista/article/view/1454. Thanks for the authors by their collaboration and permission to use this data.