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Documentation for package ‘agridat’ version 1.18

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A B C D E F G H I J K L M N O P R S T U V W Y Z

-- A --

aastveit.barley Barley heights and environmental covariates in Norway
aastveit.barley.covs Barley heights and environmental covariates in Norway
aastveit.barley.height Barley heights and environmental covariates in Norway
acorsi.grayleafspot Multi-environment trial evaluating 36 maize genotypes in 9 locations
adugna.sorghum Multi-environment trial of sorghum at 3 locations across 5 years
agridat Datasets from agricultural experiments
allcroft.lodging Multi-environment trial of cereal with lodging data
alwan.lamb For the 34 sheep sires, the number of lambs in each of 5 foot shape classes.
ansari.wheat.uniformity Uniformity trial of wheat
archbold.apple Split-split plot experiment of apple trees
ars.earlywhitecorn96 Multi-environment trial of early white food corn
australia.soybean Multi-environment trial of soybean in Australia

-- B --

baker.barley.uniformity Uniformity trials of barley, 10 years on same ground
baker.strawberry.uniformity Uniformity trial of strawberry
baker.wheat.uniformity Uniformity trial of wheat
bancroft.peanut.uniformity Uniformity trial of peanuts
batchelor.apple.uniformity Uniformity trials of apples, lemons, oranges, and walnuts
batchelor.lemon.uniformity Uniformity trials of apples, lemons, oranges, and walnuts
batchelor.navel1.uniformity Uniformity trials of apples, lemons, oranges, and walnuts
batchelor.navel2.uniformity Uniformity trials of apples, lemons, oranges, and walnuts
batchelor.valencia.uniformity Uniformity trials of apples, lemons, oranges, and walnuts
batchelor.walnut.uniformity Uniformity trials of apples, lemons, oranges, and walnuts
battese.survey Survey and satellite data for corn and soy areas in Iowa
beall.webworms Counts of webworms in a beet field, with insecticide treatments.
beaven.barley Yields of 8 barley varieties in 1913 as used by Student.
becker.chicken Mating crosses of chickens
besag.bayesian RCB experiment of spring barley in United Kingdom
besag.beans Competition experiment in beans with height measurements
besag.checks Check variety yields in winter wheat.
besag.elbatan RCB experiment of wheat, 50 varieties in 3 blocks with strong spatial trend.
besag.endive Presence of footroot disease in an endive field
besag.met Multi-environment trial of corn, incomplete-block design
besag.triticale Four-way factorial agronomic experiment in triticale
blackman.wheat Multi-environment trial of wheat, conventional and semi-dwarf varieties
bliss.borers Corn borer infestation under four treatments
bond.diallel Diallel cross of winter beans
bose.multi.uniformity Uniformity trials of barley, wheat, lentils
box.cork Weight of cork samples on four sides of trees
bradley.multi.uniformity Uniformity trial of 4 crops on the same land
brandle.rape Multi-environment trial of rape in Manitoba
brandt.switchback Switchback experiment on dairy cattle, milk yield for two treatments
bridges.cucumber Multi-environment trial of cucumbers in a latin square design
broadbalk.wheat Long term wheat yields on Broadbalk fields at Rothamsted.
bryan.corn.uniformity Uniformity trial of corn at 3 locations in Iowa.
burgueno.alpha Incomplete block alpha design
burgueno.rowcol Row-column design
burgueno.unreplicated Field experiment with unreplicated genotypes plus one repeated check.
butron.maize Multi-environment trial of maize with pedigrees
byers.apple Diameters of apples

-- C --

caribbean.maize Multi-environment trial of maize with fertilization
carlson.germination Germination of alfalfa seeds at various salt concentrations
carmer.density Nonlinear maize yield-density model
cate.potassium Relative cotton yield for different soil potassium concentrations
chinloy.fractionalfactorial Sugarcane fractional factorial 1/3 3^5
christidis.competition Competition between varieties in cotton
christidis.cotton.uniformity Uniformity trial of cotton
christidis.wheat.uniformity Uniformity trial of wheat
cleveland.soil Soil resistivity in a field
cochran.beets Yield and number of plants in a sugarbeet fertilizer experiment
cochran.bib Multi-environment trial of corn, balanced incomplete block design
cochran.crd Potato scab infection with sulfur treatments
cochran.eelworms Counts of eelworms before and after fumigant treatments
cochran.factorial Factorial experiment in beans
cochran.latin Latin square design in wheat
cochran.lattice Balanced lattice experiment in cotton
cochran.wireworms Wireworms controlled by fumigants in a latin square
connolly.potato Potato yields in single-drill plots
cornelius.maize Multi-environment trial of maize for 9 cultivars at 20 locations.
correa.soybean.uniformity Uniformity trial of soybean
corsten.interaction Multi-environment trial of corn
cox.stripsplit Strip-split-plot of barley with fertilizer, calcium, and soil factors.
cramer.cucumber Cucumber yields and quantitative traits
crampton.pig Weight gain in pigs for different treatments
crossa.wheat Multi-environment trial of wheat for 18 genotypes at 25 locations
crowder.seeds Germination of Orobanche seeds for two genotypes and two treatments.
cullis.earlygen Early generation variety trial in wheat

-- D --

damesa.maize Incomplete-block experiment of maize in Ethiopia.
darwin.maize Darwin's maize data of crossed/inbred plant heights
dasilva.maize Multi-environment trial of maize
davidian.soybean Growth of soybean varieties in 3 years
davies.pasture.uniformity Uniformity trial of pasture.
day.wheat.uniformity Uniformity trial of wheat
denis.missing Multi-environment trial with structured missing values
denis.ryegrass Multi-environment trial of perennial ryegrass in France
depalluel.sheep Latin square of four breeds of sheep with four diets
devries.pine Graeco-Latin Square experiment in pine
digby.jointregression Multi-environment trial of wheat
diggle.cow Bodyweight of cows in a 2-by-2 factorial experiment
draper.safflower.uniformity Uniformity trial of safflower
durban.competition Sugar beet yields with competition effects
durban.rowcol Row-column experiment of spring barley, many varieties
durban.splitplot Split-plot experiment of barley with fungicide treatments

-- E --

eden.nonnormal Height of barley plants in a study of non-normal data
eden.potato Potato yields in response to potash and nitrogen fertilizer
eden.tea.uniformity Uniformity trial of tea
edwards.oats Multi-environment trial of oats in United States, 5 locations, 7 years.
engelstad.nitro Multi-environment trial of corn with nitrogen fertilizer

-- F --

fan.stability Multi-environment trial of maize hybrids in China
federer.diagcheck Wheat experiment with diagonal checks
federer.tobacco RCB of tobacco, height plants exposed to radiation
fisher.barley Multi-environment trial of 5 barley varieties, 6 locations, 2 years
fisher.latin Latin square experiment on mangolds
foulley.calving Calving difficulty by calf sex and age of dam
fox.wheat Multi-environment trial of wheat, 22 varieties at 14 sites in Australia

-- G --

garber.multi.uniformity Uniformity trials of oat hay and wheat grain
gartner.corn Yield monitor data from a corn field in Minnesota
gathmann.bt Impact of Bt corn on non-target species
gauch.soy Multi-environment trial of soybeans in New York, 1977 to 1988
george.wheat Multi-location/year breeding trial in California
giles.wheat Straw length and ear emergence for wheat genotypes.
gilmour.serpentine Wheat yield in South Australia with serpentine row/col effects
gilmour.slatehall Slate Hall Farm 1978
gomez.fractionalfactorial Rice fractional factorial experiment 1/2 2^6.
gomez.groupsplit Group balanced split-plot design in rice
gomez.heteroskedastic RCB experiment of rice, heteroskedastic varieties
gomez.multilocsplitplot Multi-environment trial of rice, split-plot design
gomez.nitrogen Soil nitrogen at three times for eight fertilizer treatments
gomez.nonnormal1 Insecticide treatment effectiveness
gomez.nonnormal2 RCB experiment of rice, measuring white heads
gomez.nonnormal3 RCB experiment of rice, 12 varieties with leafhopper survival
gomez.rice.uniformity Uniformity trial of rice
gomez.seedrate RCB experiment of rice, 6 densities
gomez.splitplot.subsample Split-plot experiment of rice, with subsamples
gomez.splitsplit Split-split-plot experiment of rice
gomez.stripplot Strip-plot experiment of rice
gomez.stripsplitplot Strip-split-plot experiment of rice
gomez.wetdry Rice yield in wet & dry seasons with nitrogen fertilizer treatments
gotway.hessianfly Hessian fly damage to wheat varieties
goulden.barley.uniformity Uniformity trial of barley
goulden.eggs Sample of egg weights on 24 consecutive days
goulden.latin Latin square experiment for testing fungicide
goulden.splitsplit Split-split-plot experiment of wheat
graybill.heteroskedastic Multi-environment trial of wheat varieties with heteroskedastic yields
gregory.cotton Factorial experiment of cotton in Sudan.
gumpertz.pepper Phytophtera disease incidence in a pepper field

-- H --

hanks.sprinkler Wheat yields in a line-source sprinkler experiment
hanover.whitepine Mating crosses of white pine trees
harris.multi.uniformity Uniformity trials with multiple crops, 15 years on the same land
harris.wateruse Water use by horticultural trees
harrison.priors Ranges of analytes in soybean from other authors
hartman.tomato.uniformity Uniformity trial of tomato
harvey.lsmeans Average daily gain of 65 steers for 3 lines, 9 sires.
harville.lamb Birth weight of lambs from different lines/sires
hayman.tobacco Diallel cross of Aztec tobacco
hazell.vegetables Gross profit for 4 vegetable crops in 6 years
heady.fertilizer Yield of corn, alfalfa, clover with two fertilizers
heath.raddish.uniformity Uniformity trial of raddish
henderson.milkfat Milk fat yields for a single cow
hernandez.nitrogen Multi-environment trial of corn with nitrogen fertilizer at 5 sites.
hessling.argentina Relation between wheat yield and weather in Argentina
hildebrand.systems Multi-environment trial of maize for four cropping systems
holland.arthropods Counts of arthropods in a grid-sampled wheat field
holshouser.splitstrip Split-strip-plot of soybeans
holtsmark.timothy.uniformity Uniformity trial of timothy
huehn.wheat Multi-environment trial of wheat to illustrate stability statistics
hughes.grapes RCB experiment of grape, disease incidence
hunter.corn Multi-environment trial of corn with nitrogen fertilizer

-- I --

igue.sugarcane.uniformity Uniformity trial with sugarcane
ilri.sheep Birth weight and weaning weight of Dorper x Red Maasi lambs
immer.sugarbeet.uniformity Uniformity trial of sugarbeets, measurements of yield, sugar, purity
ivins.herbs Percent ground cover of herbage species and nettles.
iyer.wheat.uniformity Uniformity trials of wheat in India

-- J --

jansen.apple Infestation of apple shoots by apple canker.
jansen.carrot Infestation of carrots by fly larvae
jansen.strawberry Ordered disease ratings of strawberry crosses.
jayaraman.bamboo Bamboo progeny trial
jenkyn.mildew Yields from treatment for mildew control
john.alpha Alpha lattice design of spring oats
johnson.blight Potato blight due to weather in Prosser, Washington
johnson.douglasfir A study of small-plots of old-growth Douglas Fir in Oregon.

-- K --

kadam.millet.uniformity Uniformity trial of millet
kalamkar.potato.uniformity Uniformity trial of potatoes
kalamkar.wheat.uniformity Uniformity trial of wheat
kang.maize Multi-environment trial of maize in Louisianna at 4 locs in 3 years
kang.peanut Multi-environment trial of peanuts for 10 genotypes in 15 environments
karcher.turfgrass Turfgrass ratings for different treatments
kayad.alfalfa Yield monitor data for 4 cuttings of alfalfa in Saudi Arabia.
keen.potatodamage Damage to potato tubers from lifting rods.
kempton.barley.uniformity Uniformity trial of barley
kempton.competition Sugar beet trial with competition effects
kempton.rowcol Row-column experiment of wheat
kempton.slatehall Slate Hall Farm 1976 spring wheat
kenward.cattle Repeated measurement of weights of calves with two treatments.
kerr.sugarcane.uniformity Uniformity trials of sugarcane, 4 fields
khin.rice.uniformity Uniformity trial of rice
kiesselbach.oats.uniformity Uniformity trial of oats
kreusler.maize Growth of maize plants in Germany during 1875-1878
kristensen.barley.uniformity Uniformity trial of barley
kulkarni.sorghum.uniformity Uniformity trial of sorghum

-- L --

lambert.soiltemp Average monthly soil temperature near Zurich
lander.multi.uniformity Uniformity trials of wheat and chari, 4 years on the same land.
lasrosas.corn Yield monitor data for a corn field in Argentina with variable nitrogen.
lavoranti.eucalyptus Height of Eucalyptus trees in southern Brazil
laycock.tea.uniformity Uniformity trials of tea
lee.potatoblight Repeated measurements of resistance to potato blight
lehmann.millet.uniformity Uniformity trial of millet in India
lehner.soybeanmold Yield, white mold, and sclerotia for soybeans in Brazil
lessman.sorghum.uniformity Uniformity trial of sorghum
li.millet.uniformity Uniformity trial of millet
libs Load multiple packages and install if needed The 'agridat' package uses dozens of packages in the examples for each dataset. The 'libs' function provides a simple way to load multiple packages at once, and can install any missing packages on-the-fly. This is very similar to the 'pacman::p_load' function.
lillemo.wheat Multi-environment trial of wheat susceptibile to powdery mildew
lin.superiority Multi-environment trial of 33 barley genotypes in 12 locations
lin.unbalanced Multi-environment trial of 33 barley genotypes in 18 locations
linder.wheat Multi-environment trial of wheat in Switzerland
little.splitblock Split-block experiment of sugar beets
loesell.bean.uniformity Uniformity trial of white pea beans
lonnquist.maize Multi-environment trial of maize, half diallel
lord.rice.uniformity Uniformity trial of rice
love.cotton.uniformity Uniformity trial of cotton
lu.stability Multi-environment trial of maize, to illustrate stability statistics
lucas.switchback Switchback experiment on dairy cattle, milk yield for 3 treatments
lyon.potato.uniformity Uniformity trial of potatoes
lyons.wheat Multi-environment trial of winter wheat at 12 sites in 4 years.

-- M --

magistad.pineapple.uniformity Uniformity trial of pineapple
masood.rice.uniformity Uniformity trial of rice
mcclelland.corn.uniformity Uniformity trial of corn
mcconway.turnip RCB experiment of turnips
mcleod.barley Multi-environment trial of barley in South Canterbury with yield and yield components
mead.cauliflower Leaves for cauliflower plants at different times
mead.cowpeamaize Intercropping experiment of maize/cowpea
mead.germination Seed germination with different temperatures/concentrations
mead.lamb Number of lambs born to 3 breeds on 3 farms
mead.strawberry RCB experiment of strawberry
mead.turnip Density/spacing experiment for turnips in 3 blocks.
mercer.mangold.uniformity Uniformity trial of mangolds
mercer.wheat.uniformity Uniformity trial of wheat
miguez.biomass Biomass of 3 crops in Greece
minnesota.barley.weather Monthly weather at 6 sites in Minnesota 1927-1936.
minnesota.barley.yield Multi-environment trial of barley in Minnesota at 6 sites in 1927-1936.
montgomery.wheat.uniformity Uniformity trial of wheat, 2 years on the same land
moore.bushbean.uniformity Uniformity trials of pole beans, bush beans, sweet corn, carrots, spring and fall cauliflower
moore.carrot.uniformity Uniformity trials of pole beans, bush beans, sweet corn, carrots, spring and fall cauliflower
moore.fallcauliflower.uniformity Uniformity trials of pole beans, bush beans, sweet corn, carrots, spring and fall cauliflower
moore.polebean.uniformity Uniformity trials of pole beans, bush beans, sweet corn, carrots, spring and fall cauliflower
moore.springcauliflower.uniformity Uniformity trials of pole beans, bush beans, sweet corn, carrots, spring and fall cauliflower
moore.sweetcorn.uniformity Uniformity trials of pole beans, bush beans, sweet corn, carrots, spring and fall cauliflower

-- N --

nagai.strawberry.uniformity Uniformity trial of strawberry
nair.turmeric.uniformity Uniformity trial of turmeric.
narain.sorghum.uniformity Uniformity trial of sorghum
nass.barley U.S. historical crop yields by state
nass.corn U.S. historical crop yields by state
nass.cotton U.S. historical crop yields by state
nass.hay U.S. historical crop yields by state
nass.rice U.S. historical crop yields by state
nass.sorghum U.S. historical crop yields by state
nass.soybean U.S. historical crop yields by state
nass.wheat U.S. historical crop yields by state
nebraska.farmincome Nebraska farm income in 2007 by county
nonnecke.peas.uniformity Uniformity trial of canning peas
nonnecke.sweetcorn.uniformity Uniformity trial of sweet corn

-- O --

obsi.potato.uniformity Uniformity trial of potato in Africa 2001
odland.soybean.uniformity Uniformity trials of soy hay and soybeans
odland.soyhay.uniformity Uniformity trials of soy hay and soybeans
omer.sorghum Multi-environment trial of sorghum, 6 environments
onofri.winterwheat Multi-environment trial of winter wheat, 7 years
ortiz.tomato Multi-environment trial of tomato in Latin America, weight/yield and environmental covariates
ortiz.tomato.covs Multi-environment trial of tomato in Latin America, weight/yield and environmental covariates
ortiz.tomato.yield Multi-environment trial of tomato in Latin America, weight/yield and environmental covariates

-- P --

pacheco.soybean Multi-environment trial of soybean in Brazil.
paez.coffee.uniformity Uniformity trial of coffee
panse.cotton.uniformity Uniformity trial of cotton
parker.orange.uniformity Uniformity trial of oranges
patterson.switchback Switchback experiment on dairy cattle, milk yield for 4 treatments
pearce.apple Apple tree yields for 6 treatments with covariate
pearl.kernels Counts of yellow/white and sweet/starchy maize kernels by 15 observers
pederson.lettuce.repeated Repeated measurements of lettuce growth
perry.springwheat Multi-environment trial of wheat cultivars introduced 1860-1982.
piepho.barley.uniformity Uniformity trial of barley
piepho.cocksfoot Multi-environment trial of cock's foot, heading dates for 25 varieties in 7 years
polson.safflower.uniformity Uniformity trial of safflower

-- R --

ratkowsky.onions Onion yields for different densities at two locations
reid.grasses Yields of four grasses for a wide range of nitrogen fertilizer
ridout.appleshoots Root counts for propagated columnar apple shoots.
robinson.peanut.uniformity Uniformity trial of peanuts
rothamsted.brussels RCB experiment of brussels sprouts, 9 fertilizer treatments
rothamsted.oats RCB experiment of oats, straw and grain, 9 fertilizer treatments
ryder.groundnut RCB experiment of groundut, wet and dry yields

-- S --

salmon.bunt Fungus infection in varieties of wheat
sawyer.multi.uniformity Uniformity trials of wheat, swedes, oats, 3 years on the same land
sayer.sugarcane.uniformity Uniformity trial of sugarcane in India, 1933 & 1934.
senshu.rice Multi-environment trial of rice, with solar radiation and temperature
shafi.tomato.uniformity Uniformity trial of tomato
shafii.rapeseed Multi-environment trial of rapeseed in U.S.
shaw.oats Multi-environment trial of oats in India
silva.cotton Number of cotton bolls for different levels of defoliation.
sinclair.clover Clover yields in a factorial fertilizer experiment
smith.beans.uniformity Uniformity trials of beans, 2 species in 2 years
smith.corn.uniformity Uniformity trial of corn, 3 years on same ground
snedecor.asparagus Asparagus yields for different cutting treatments
snijders.fusarium Fusarium infection in wheat varieties
stephens.sorghum.uniformity Uniformity trial of sorghum silage
steptoe.morex.geno Multi-environment trial of barley, phenotypic and genotypic data for a population of Steptoe x Morex
steptoe.morex.pheno Multi-environment trial of barley, phenotypic and genotypic data for a population of Steptoe x Morex
stickler.sorghum.uniformity Uniformity trial of sorghum
stirret.borers Corn borer control by application of fungal spores.
streibig.competition Competition experiment between barley and sinapis.
strickland.apple.uniformity Uniformity trial in apple
strickland.grape.uniformity Uniformity trial of grape
strickland.peach.uniformity Uniformity trial of peach
strickland.tomato.uniformity Uniformity trial of tomato
stroup.nin RCB experiment of wheat at the Nebraska Intrastate Nursery
stroup.splitplot Split-plot experiment of simulated data
student.barley Multi-environment trial of barley

-- T --

tai.potato Multi-environment trial of potato
talbot.potato Multi-environment trial of potato in UK, yields and trait scores at 12 locations
talbot.potato.traits Multi-environment trial of potato in UK, yields and trait scores at 12 locations
talbot.potato.yield Multi-environment trial of potato in UK, yields and trait scores at 12 locations
theobald.barley Multi-environment trial of barley, multiple years & fertilizer levels
theobald.covariate Multi-environment trial of corn silage, Year * Loc * Variety with covariate
thompson.cornsoy Multi-environment trial of corn & soybean, 1930-1962, with temperature and precipitation
turner.herbicide Herbicide control of larkspur

-- U --

urquhart.feedlot Weight gain calves in a feedlot
usgs.herbicides Concentrations of herbicides in streams in the United States

-- V --

vaneeuwijk.drymatter Multi-environment trial of maize, dry matter content
vaneeuwijk.fusarium Infection of wheat varieties by Fusarium strains from 1990 to 1993
vaneeuwijk.nematodes Number of cysts on 11 potato genotypes for 5 potato cyst nematode populations.
vargas.txe Treatment x environment interaction in agronomy trials
vargas.txe.covs Treatment x environment interaction in agronomy trials
vargas.txe.yield Treatment x environment interaction in agronomy trials
vargas.wheat1 Wheat yields in 7 years with genetic and environment covariates
vargas.wheat1.covs Wheat yields in 7 years with genetic and environment covariates
vargas.wheat1.traits Wheat yields in 7 years with genetic and environment covariates
vargas.wheat2 Multi-environment trial of wheat with environmental covariates
vargas.wheat2.covs Multi-environment trial of wheat with environmental covariates
vargas.wheat2.yield Multi-environment trial of wheat with environmental covariates
verbyla.lupin Multi-environment trial of lupin, multiple varieties and densities
vold.longterm Long-term barley yields at different fertilizer levels
vsn.lupin3 Multi-environment trial of lupin, early generation trial

-- W --

wallace.iowaland Iowa farmland values by county in 1925
walsh.cottonprice Acres and price of cotton 1910-1943
wassom.brome.uniformity Uniformity trials of bromegrass
waynick.soil Soil nitrogen and carbon in two fields
wedderburn.barley Multi-environment trial of barley, percent of leaves affected by leaf blotch
weiss.incblock Soybean balanced incomplete block experiment
weiss.lattice Lattice experiment in soybeans.
welch.bermudagrass Factorial experiment of bermuda grass, N, P, K fertilizers
wheatley.carrot Insecticide treatments for carrot fly larvae
wiebe.wheat.uniformity Uniformity trial of wheat
wiedemann.safflower.uniformity Uniformity trial of safflower
williams.barley.uniformity Uniformity trial of barley
williams.cotton.uniformity Uniformity trial of cotton
williams.trees Multi-environment trial of trees, height / survival of 37 species at 6 sites in Thailand
wyatt.multi.uniformity Uniformity trial of oats and wheat on the same ground.

-- Y --

yan.winterwheat Multi-environment trial of winter wheat in Ontario
yang.barley Multi-environment trial of barley in Alberta, 6 varieties at 18 locations in Alberta.
yates.missing Factorial experiment with missing values
yates.oats Split-plot experiment of oats

-- Z --

zuidhof.broiler Daily weight, feed, egg measurements for a broiler chicken