Fungicide being applied to a field of dry beans.

Early season cultivation of dry beans and application of copper spray.

Plots of dry beans in a variety trial.

Plots of dry beans in a variety trial.

Plots of dry beans in a variety trial.

Plots of dry beans in a variety trial.

Plots of dry beans in a variety trial.

Dry bean variety trial, Burlington, Colorado, conducted by Colorado State University in 1998.

Plant morphological differences between drybean varieties at maturity.

A drybean variety trial field at maturity.

A drybean variety trial field at maturity.

A drybean variety trial field at maturity.

A drybean variety trial field at maturity.

A drybean variety trial field at maturity.

A drybean variety trial field at maturity.

A drybean variety trial field at maturity.

A drybean variety trial field at maturity.

A drybean variety trial field at maturity.

A drybean variety trial field at maturity.

A view of a drybean variety test plot.

Close-up of the end of a row of the dry bean, "Red Mexican 94-4978," included in a variety trial.

Close-up of the end of a row of the dry bean, "Fisher Pinto," included in a variety trial near Holyoke, Colorado.

Close-up of the end of a row of the dry bean, "Bill Z Pinto," included in a variety trial near Holyoke, Colorado.

Overview of a field of "NW410" pinto beans used in a variety trial in 1994 at Burlington, Colorado.

Overview of a field of "UI-114" pinto beans used in a variety trial in 1994 at Burlington, Colorado.

Overview of a field of "UI-129" pinto beans used in a variety trial in 1994 at Burlington, Colorado.

Overview of a field of "Arapaho" pinto beans used in a variety trial in 1994 at Burlington, Colorado.

Overview of a field of "Chase" pinto beans used in a variety trial in 1994 at Burlington, Colorado.

Drybean variety CO97373calima-type on a field at Sterling in 1993.

Drybean variety RS101pinto on a field at Sterling in 1993.

Drybean variety UI126pinto on a field at Sterling in 1993.

Drybean variety NW410pinto on a field at Sterling in 1993.

Drybean variety Olathe-pinto on a field at Sterling in 1993.

Drybean variety Bill Z-pinto on a field at Sterling in 1993.

Drybean variety Chase-pinto on a field at Yellow Jacket in 1994.

Drybean variety Bill Z-pinto on a field at Yellow Jacket in 1994.

Drybean variety UI906-black on a field at Yellow Jacket in 1994.

Drybean variety Sacrmento-LRK on a field at Eaton in 1994.

Drybean variety RS101-pinto on a field at Eaton in 1994.

Drybean variety UI114-pinto on a field at Eaton in 1994.

Drybean variety UI129-pinto on a field at Eaton in 1994.

Drybean variety Olathe-pinto on a field at Eaton in 1994.

Drybean variety Chase-pinto on a field at Eaton in 1994.

Dry bean field day in 1984, lead by Howard Schwartz and Dan Legardin, Colorado State University.

Dry bean field day in Wray, Colorado, 1998, conducted by Colorado State University Extension.

Dry bean field day in Ovid, Colorado, 2000, conducted by Colorado State University Extension.

A Colorado State University's Bean Variety Trials field day at Fort Collins in 1983.

A drybean field-day at the Agricultural Research, Development and Education Center in Coloardo.

Canopy development in rows of dry bean plants.

Field of dry bean plants showing development (closure) of the canopy.

Field of dry bean plants showing development of the canopy - canopy has just closed over the furrow between rows.

Graphic illustration of the growth stages of dry beans.

Field used in a dry bean variety trial, Burlington, Colorado, conducted by Colorado State University.

Tractor-driven dry bean planter.

Using a soil penetrometer to measure soil compaction in a dry bean field.

Thresher used in harvesting small plots of dry beans.

Cutter used during harvest of dry beans.

The side-roll irrigation system in use on a drybean field at Idaho.

A combine harvester in operation during drybeans harvesting in the field.

A combine harvester in operation during drybeans harvesting in the field.

Dry bean planter used by Colorado State University in variety trials.

Close-up view of a combine header and combine in action, during harvest of dry beans.

Combine harvesting and threshing dry beans in the field.

Unloading harvested dry beans from the combine into a truck.

Kidney beans being harvested with a combine.

Combine unloading newly harvested kidney beans into a truck.

Combine unloading newly harvested kidney beans into a truck, with a close view of the front of the combine.

View of a windrower used during harvest of dry beans.

Tractor-driven cutter used to harvest dry beans.

Tractor-driven cutter used to harvest dry beans.

Close view of dry bean plants being harvested with a mechanical cutter.

Center pivot system in use, irrigating a field of dry beans.

Center pivot system in use, irrigating a field of dry beans.

Side view of a dry bean cultivator - Holyoke, Colorado.

Dry bean cultivator and ground sprayer - Burlington, Colorado.

Cultivating dry beans using a tractor cultivator - Eckley, Colorado.

Hooded cultivator and sprayer, applying copper onto dry beans - Grant, Nebraska.

Airplane spraying maneb on dry beans near Burlington, Colorado.

RoGator used to apply pesticides on fields of dry beans.

Field sprayer used in applying pesticides to fields of dry beans.

Field of pinto beans being irrigated by a center pivot system.

Center pivot irrigation of a field of pinto beans -- close-up view of sprinkler head.

Soil penetrometer being used to measure soil compaction in a bean field.

Remote electronic weather station used for research on onions and dry beans - Greeley, Colorado.

Remote electronic weather station used in research modeling diseases of dry beans and onions - Lucerne, Colorado.

Cultivation and early-season application of copper spray to dry beans.

Linear irrigation system for use on dry beans, Kanorado, Kansas.

A linear irrigation system used on a drybean field at Kanorado.

An accessory of a linear irrigation system used on a drybean field at Kanorado.

Tractor and dry bean planter in action.

Tractor-driven dry bean planter in use.

Dry bean planter

Tractor-driven dry bean planter in use.

Tractor with sprayer used for pesticide application to dry beans and field corn.

Tractor and disks used in preparation of fields for dry beans and field corn.

Chisel plow used in preparing fields for dry beans and field corn.

Spectrum weather station set up in the canopy of a bean field for use in disease modeling research.

Fungicide application to a field of dry beans, using a Terragator.

Tractor and dry bean planter being prepared for planting by Mark Brick.

Side view of a dry bean planter.

Dry bean planter ready for action.

Tractor cultivating between rows of dry beans.

Dry bean cultivator and pesticide applicator.

Tractor-based dry bean cultivator and pesticide applicator.

An equipment for a drip irrigation system used on a drybean field.

A 4-wheeler in opereation on a drybean plot on a CSU Bean Variety Trials program.

Field planting of drybeans using the CSU bean planter on a CSU Bean Variety Trials program in 1992.

Bean combine used in variety trials by Colorado State University in 1994.

A tractor cultivating a drybean field near La Selva in Colombia.

A Pickett windrower in operation on a drybean field at the Agricultural Research, Development and Education Center in Colorado.

A drybean combine-harvester in operation in the field.

A drybean combine-harvester in operation in the field.

A weather station equipment on a drybeans field.

A truck used for weighing harvested drybeans at an elevator during a drybean harvesting/storage process.

A storage facility for drybeans.

A bean cultivator rigged with ground-rig sprayer for pesticide application.

Supply hose of a linear move irrigation system in use on a bean crop at the Agricultural Research, Development and Education Center of Colorado State University.

Harvesting windrowed dry beans using a combine.

Dry beans being picked up by a combine during harvest.

Dry bean elevator and storage bins.

Sampling and weighing dry beans at an elevator.

Potted dry beans growing in a research greenhouse facility.

Mature pods of kidney beans, on the plants.

Scenic view of a field of healthy and vigorous dry bean plants.

Kidney beans at two stages of crop development due to planting dates: green and maturing plants on the left; dried, in windrows and being harvested on the right.

Mature dry bean plants, ready for harvest near Delta, Colorado.

Field of mature pinto bean plants, ready for harvest.

Mid-season scenic view of a dry bean field near Yellow Jacket, Colorado.

Field of dry beans on a steep slope near Palmira, Colombia.

A scenic view of a maturing drybeans field.

A irrigated snap bean (Phaseolus vulgaris) field.

A scenic view of a drybean field in Malawi.

Dry bean field being used in a variety trial near Berthoud, Colorado.

A drybean nursery at the Agricultural Research, Development and Education Center in Coloardo during a drybean field-day.

A scenic view of the West Slope of a snap bean field.

Field of dry beans in a variety trial, Eaton, Colorado, 1998.

Field of light red kidney beans irrigated with a center pivot system.

Irrigation of a kidney bean field

A scenic view of a drip irrigated drybean field.

Study plots in a disease trial researching bacterial brown spot (Pseudomonas syringae pv. syringae) on dry beans at Holyoke, Colorado, in 1999.

Double-row field of dry beans, Ault, Colorado.

Overview of a field of dry beans used in a variety trial in 1994 at Burlington, Colorado.

A drybean subsistence farm at Tenerife, Colombia.

A scenic view of a drybean, papaya and banana associated culture at Tenerife, Colombia.

Drybeans (Phaseolus coccineus) plants in flower.

The flowers of a pole snap bean plant in the field.

A young pod of a pole snap bean plant in the field.

Snap bean plants in flower in the field.

Close view of a dry bean plant, showing flower buds.

Vegetative chimera of bean leaves.

Morphological  characteristics of drybean pods at maturity.

Morphological  characteristics of drybean pods at maturity.

Drybean seedlings grown in the mist chamber of a greenhouse.

Winnowing of dry beans by hand -- near Chihuahua, Mexico.

Hand threshing of dry beans near Quito, Ecuador.

Windrows of great northern beans prepared for harvest.

Mature pinto bean plants, cut and ready for harvest.

Dry beans cut and lying in windrows in the field, ready for harvest.

Dry beans cut and lying in windrows in the field, ready for harvest.

Rodding pinto beans from the soil in preparation for harvest, using a tractor-driven rodder.

Combine harvesting pinto beans in the field.

A scenic view of a harvested drybean field at Alvin Whitman near Eaton in 2003.

A scenic view of a harvested drybean field at Alvin Whitman near Eaton in 2003.

Tractor loaded with dry beans during harvest near Chihuahua, Mexico, in 1992.

Bayo beans piled in the field during harvest near Durango, Mexico, in 1982.

A pile of harvested drybeans on a field near Durango, Mexico.

A farmer cleaning harvested drybeans on a field near Cuencame, Mexico.

Dry beans pulled into windrows during harvest.

A drybean and fieldcorn storage near Ciudad Victoria, Mexico.

A historic grain storage silo near Ciudad Victoria, Mexico.

Debris remaining in a bean field after harvest, which could result in volunteer plants and a carryover of disease organisms.

Volunteer corn plant growing in a field of dry beans.

Thrips infesting the underside of a dry bean leaf.

Field inspection of dry beans, post-flowering, in order to certify the seed produced.

A drybean field near a turkey farm.

A scenic view of cleared areas of the Amazon for drybeans and soybean cropping in Brazil.

A scenic view of an intercropping system at Chimaltenango, Guatemala, involving drybeans, fieldcorn and some other vegetables.

Minimum till dry bean field.

Tractor cultivating a dry bean field.

Field of dry beans planted with multiple rows of plants between furrows, Wray, Colorado.

Field of dry beans planted 3 rows to a bed - Julesburg, Colorado.

Scouting a field of winter wheat in search of volunteer dry bean plants.

A drybean nursery at ARDEC-CIAT as part of the CSU Bean Variety Trials program.

D.Nuland on a Colorado State University's Bean Variety Trial extension program at Eaton in 1994.

A farmers field-day at Wiggins organised by Colorado State University during a Bean Variety Trial in 1987.

A farmers field-day at Sterling organised by Colorado State University during a Bean Variety Trial in 1994.

S.Singh at a farmers' field-day on a Colorado State University's Bean Variety Trial extension program at  the Agricultural Research, Development and Education Center (ARDEC) in 1994.

Participants of a dry bean field day held at Colorado, USA, on a demonstration field.

Participants of a dry bean field day held at Colorado, USA.

Volunteer dry beans growing in an alfalfa field.

Volunteer dry bean plants growing as weeds in an alfalfa field.

Mature pinto bean plants, ready for harvest.

Plants removed from soil and the soil removed to show the effect of soil compaction on bean roots.

Mature pinto bean plants, dry and ready for harvest.

Dry bean plants beginning to form flower buds.

A scenic view of a bush snap bean field.

Snap bean plants with pods in the field.

Pole snap bean plants in the field.

Pole snap bean plants in the field.

The tendrils of pole snap bean plants in the field.

Overview of a field of dry beans used in a variety trial in 1994 at Burlington, Colorado.

Volunteer bean plants, a potential source of infection with bean rust (Uromyces appendiculatus).

Volunteer bean plants and residual debris - a potential source of infection with bean rust (Uromyces appendiculatus).

Volunteer bean plant and residual debris - a potential source of infection with bean rust (Uromyces appendiculatus).

Solid seeded light red kidney bean plants.

Healthy young bean plants.

Mayocoba bean plants in the field.

Chlorotic dry bean plant, caused by a genetic mutation.

Dry bean plant isolated in a field, showing growth habit and plant morphology.

Yellow dry bean plants growing at Burlington, Colorado, 1999.

A field prepared by the slash and burn system to be used for drybean planting at Colombia.

Volunteer bean plants in field corn - a potential source of infection with bean rust (Uromyces appendiculatus).

Planting of drybeans on a CSU bean variety trial field at Fort Collins in 1985.

A slash and burn land preparation method used for this drybean field at Tenerife, Colombia.

A drybean seed processing plant showing the elevators and the storage bins.

Dry bean market classes: prime quality great northern beans, pinto beans, and light red kidney beans.

Bags of certified dry bean seed.

A dry bean field at Colorado, USA, at the 'matured' stage of growth and development.

A dry bean field at Colorado, USA, at the 'matured' stage of growth and development.

A scenic view of a drybean test plot used for variety trials.

Plots used by Colorado State University to research the use and effects of bactericide on dry beans at Burlington, Colorado.

Washing of bean roots for Rhizobia inoculation in the greenhouse.

A close-up view of a mid-season bean field near Burlington.

A scenic view of a dry bean field near Burlington showing the gated pipe irrigation system used.

A bean field at Yuma showing the LIPA irrigation system used.

A close-up view of a bean flower bud.

A scenic view of a bean field in late season..

A harvested bean field showing bean debris after the operation of a windrower harvestor.

A bean filed harvesting operation using a combine harvestor.

Plots used in research on bean rust (Uromyces appendiculatus) at the Agricultural Research, Development and Education Center of Colorado State University.

A small boy near a platform being used for drybean seeds drying at Tenerife, Colombia.

Green drybean pods for sale on the open air market in Uganda.

A farmer on his intercropped field of drybeans, coffee, papaya and banana at Tenerife, Colombia.

A wild variety of drybeans at Tenerife, Colombia.

A scenic view of drybeans (Phaseolus coccineus) in the wild.

Wild drybeans (Phaseolus coccineus) at La Tigra, Honduras.

Wild drybeans (Phaseolus coccineus) at La Tigra, Honduras.

A drybean field at Tamulipas, Honduras.

Chase's field at Eckley as part of the CSU Bean Variety Trials in 1994.

A bean rust plot on a CSU Bean Variety Trials program at ARDEC in 1994.

Maize and drybean relevo-system in Colombia.

A field corn-drybeans intercropping system in CIAT, Colombia.

A scenic view of a drybean associated system at Chimaltenango, Guatemala.

An upright drybeans field at Bunda College, Lilongwe, Malawi.

Drybean seeds for sale at a Ugandan market place.

Drybean seeds for sale at a Ugandan market place.

Drybean production field near Sombrete in Mexico.

A market place scene at Chimaltenango in Guatemala where a woman weighs out some drybean seeds for sale.

A field of drybeans and soybeans in southern Parana, Brazil.

A scenic view of a drybean field as part of the subsistence farming system at Tenerife, Colombia.

An associated culture of drybeans, papaya and banana at Tenerife, Colombia.

Study plots, treated with copper and maneb, in a disease trial researching bacterial brown spot (Pseudomonas syringae pv. syringae) on dry beans at Holyoke, Colorado, in 1999.

Dry bean plants treated with copper in a disease trial researching bacterial brown spot (Pseudomonas syringae pv. syringae) on dry beans at Holyoke, Colorado, in 1999.

Study plots in a disease trial researching common bacterial blight (Xanthomonas campestris pv. phaseoli) of dry beans at Burlington, Colorado, in 1999.

Field plots in a research study on white mold of dry beans (Sclerotinia sclerotiorum) - Holyoke, Colorado, 1999.

Study plots in a disease trial researching bacterial brown spot (Pseudomonas syringae pv. syringae) on dry beans at Holyoke, Colorado, in 1999.

A field of light red kidney drybean variety used for halo blight (Pseudomonas syringae pv. phaseolicola) and bacterial brown spot (Pseudomonas syringae pv.syringae) research.

Equipment and set up for airbrush inoculation of plants for research involving bacterial, fungal, and viral diseases of dry beans.

Dry bean plant pulled up to show morphology of the roots.

Rhizobial nodules on the roots of a bean plant used in variety trials by Colorado State University.

Scenic view of a field of dry beans during a rainstorm.

Seeds of the nuna/popping beans during a seed quality inspection exercise. Image shows post-popped seeds.

Seeds of the nuna/popping beans during a seed quality inspection exercise. Image shows both pre and post-popped seeds.

Seeds of the speckled variety of popping beans during a seed quality inspection exercise. Image shows pre-popped seeds.

A colorful mixture of seeds of Andean bean varieties.

closeup of dry bean 1.5 cm long

Pinto beans they are named for its molted skin

The colorful seeds of Anasazi dry beans.

Seeds of light red kidney beans.

Seeds of small red dry beans.

Seeds of pinto beans.

Seeds of yellow eye dry beans.

Seeds of garden snap beans during a seed quality inspection exercise.

Seeds of great northern dry beans.

A mix of the seeds of 16 various pulse crops, including dry beans, lentils, and peas.

Seeds of manzano dry beans.

Market class navy beans.

Market class white kidney beans.

Market quality pink beans.

A mixture of market class dryeban seeds.

Seeds of the purple-podded snap bean variety.

A handful of bayo beans, following harvest.

Hands full of market class flor de Mayo beans and mantequilla dry beans.

Morphology of a healthy bean seedling.

Row of bean seedlings.

Healthy bean seedlings in the field.

Dry beans emerging from soil that has been rotary-tilled.

Bean seedlings used for root rot disease research on benches in a greenhouse.

Dry bean seedling at the crook neck stage, emerging from the soil.

Bean seedlings emerging from the soil.

Dry bean seedling newly emerged from the soil and about to spread the first pair of leaves.

Drybean seedlings in a greenhouse at Colorado State University.

Intercropping of dry beans, coffee and papaya near Palmira, Colombia.

A field of kidney beans being irrigated with a center pivot system.

Foggy and rainy conditions in a dry bean field - environmental factors conducive to fostering disease outbreaks.

Location in a bean field with 70% canopy cover.

Location in a bean field with 90% canopy cover.

Location in a bean field with 50% canopy cover.

A truck loading drybeans at the drybeans storage area.

A warehouse for drybean storage showing totebags and forklifts.

A warehouse for drybean storage showing drybean seedbins.

Drybean seed testing procedure in the laboratory.

A shaker in use on dry bean seeds to test for pathogens as part of drybean seed quality testing procedure.

Drybean seeds being decanted after soaking as part of seed quality testing procedure.

Drybeans seed germination test in the laboratory.

Preparation of Xanthomonas campestris pv. phaseoli cultures for inoculation of common bean plants in the greenhouse.