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The 1967 Iowa Corn Yield Test, M. T. Hillson, C. D. Hutchcroft Feb 1968

The 1967 Iowa Corn Yield Test, M. T. Hillson, C. D. Hutchcroft

Bulletin P

The results of the Iowa Corn Yield Test are published to aid Iowa farmers in selecting corn varieties adapted to their farms. This is the forty-eighth consecutive year for the Iowa Corn Yield Test since it began in 1920. A picker-sheller has been used to harvest a majority of fields since 1960 and on all fields since 1965.

Individual-year yield data are presented for corn varieties entered two or more consecutive years in a district. One-, 2- and 3-year yield averages are presented in tables 1 through 6 for both high and moderate plant populations for each district. Information concerning ...


The 1966 Iowa Corn Yield Test, M. T. Hillson, C. D. Hutchcroft Feb 1967

The 1966 Iowa Corn Yield Test, M. T. Hillson, C. D. Hutchcroft

Bulletin P

The results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting corn varieties adapted to their farms. This is the forty-seventh consecutive year for the Iowa Corn Yield Test since its beginning in 1920 and the seventh consecutive year in which a picker-sheller has been used to harvest most of the test fields.

Individual-year yield data are presented for com varieties entered two or more consecutive years in a district. One-, 2- and 3-year yield averages are presented in tables 1 to 6 for both high and normal plant populations for each district. Information concerning ...


The 1965 Iowa Corn Yield Test, R. L. Higgs, C. D. Hutchcroft, F. D. Williams, M. T. Hillson Jan 1966

The 1965 Iowa Corn Yield Test, R. L. Higgs, C. D. Hutchcroft, F. D. Williams, M. T. Hillson

Bulletin P

The results of the Iowa Corn Yield Test are published to aid Iowa farmers in selecting corn varieties adapted to their farms. This is the forty-sixth consecutive year for the Iowa Corn Yield Test- since its beginning in 1920 and the sixth consecutive year in which a picker-sheller has been used to harvest a majority of the test fields.

Individual year yield data are presented for corn varieties entered two or more consecutive years in a district. One-, two- and three-year yield averages are presented in tables 1 to 6 for both high and normal plant populations for each district ...


The 1964 Iowa Corn Yield Test, C. D. Hutchcroft, R. L. Higgs Feb 1965

The 1964 Iowa Corn Yield Test, C. D. Hutchcroft, R. L. Higgs

Bulletin P

The results of the Iowa Corn Yield Test are published as an aid to Iowa farmers in selecting corn hybrids adapted to their farms. This is the forty-fifth consecutive year for the Iowa Corn Yield Test since its beginning in 1920 and the fifth consecutive year in which a picker-sheller has been used to harvest a majority of the test fields.

Two-year averages are presented in tables 1-6 for both high and normal plant populations for each district. This is the second year of the district arrangement shown in fig. 1 and the second year in which all hybrids are ...


The 1963 Iowa Corn Yield Test, R. L. Higgs, C. D. Hutchcroft, J. L. Robinson Feb 1964

The 1963 Iowa Corn Yield Test, R. L. Higgs, C. D. Hutchcroft, J. L. Robinson

Bulletin P

The results of the Iowa Corn Yield Test are published as an aid to Iowa farmers in selecting corn hybrids adapted to their farms. This is the forty-fourth consecutive year for the Iowa Corn Yield Test since its beginning in 1920 and the fourth consecutive year in which a picker-sheller has been used to harvest a majority of the test fields.

Additional data are presented this year for high plant populations in tables 1, 6 and 12. The maturity trials at Ankeny and Kanawha include 2-, 3- and 4- year information for the first time. Soil fertility information of test ...


The 1962 Iowa Corn Yield Test, C. D. Hutchcroft, R. D. Ingledue, R. L. Higgs, J. L. Robinson Feb 1963

The 1962 Iowa Corn Yield Test, C. D. Hutchcroft, R. D. Ingledue, R. L. Higgs, J. L. Robinson

Bulletin P

The Iowa Com Yield Test, conducted since 1920, is an aid to Iowa farmers in selecting corn hybrids adapted to their farms. The order of listing the hybrids has been changed from preceding years. Ranking is according to maturity, with the driest hybrid placed first and followed by other hybrids in order of the increasing moisture content of the com at harvest. The reader will need to keep this in mind when using this publication.

The presentation of data does not imply approval or endorsement of any of the hybrids tested, by the authors or by the agencies sponsoring or ...


Seeds Of Iowa Noxious And Common Weeds, Duane Isely, W. H. Bragonier Sep 1962

Seeds Of Iowa Noxious And Common Weeds, Duane Isely, W. H. Bragonier

Bulletin P

Weeds are one of the most serious problems faced by the American farmer. Losses due to weeds are estimated at 3 billion dollars annually in the United States.

The best way to control weeds is to stop them before they reach the farm. This is true of both noxious weeds and the so-called common weeds which are too frequently taken for granted. It is much easier and cheaper to prevent these pests from establishing themselves than to eradicate them. The seeds of a few kinds of weeds can be carried long distances by natural means. For instance, dandelion seeds are ...


The 1961 Iowa Corn Yield Test, C. D. Hutchcroft, R. D. Ingledue, J. L. Robinson Feb 1962

The 1961 Iowa Corn Yield Test, C. D. Hutchcroft, R. D. Ingledue, J. L. Robinson

Bulletin P

This publication reports the results of the forty-second annual Iowa Com Yield Test and lists comparative data for many of the com hybrids being sold in Iowa. The presentation of the data does not imply approval or endorsement of any of the hybrids tested by the authors or by the agencies sponsoring or conducting the testing.

The state was divided into 12 districts, and two test fields were planted in each district as shown on the map (fig. 1) l In addition, two maturity fields were planted at Ankeny and Kanawha m 1960 and 1961 Table A lists the name ...


The 1960 Iowa Corn Yield Test, R. D. Ingledue, C. D. Hutchcroft, J. L. Robinson Feb 1961

The 1960 Iowa Corn Yield Test, R. D. Ingledue, C. D. Hutchcroft, J. L. Robinson

Bulletin P

Tests to compare sources of com seed grown by Iowa farmers have been conducted in Iowa since 1920. In 1960, 351 corn hybrids were tested. The presentation of the data obtained, however, does not imply approval or endorsement of any of the hybrids tested by the authors or by the agencies sponsoring and conducting the 1960 testing.

The state was divided into 12 districts, and two test fields were planted in each district as shown on the map (fig. 1). Table A lists the name and address of each cooperator in 1960 and also the planting and harvesting dates for ...


The 1959 Iowa Corn Yield Test, C. D. Hutchcroft, J. L. Robinson, R. D. Ingledue Feb 1960

The 1959 Iowa Corn Yield Test, C. D. Hutchcroft, J. L. Robinson, R. D. Ingledue

Bulletin P

This bulletin is the report of the fortieth annual Iowa Corn Yield Test. Similar tests have been conducted each year since 1920.

The purpose of the Iowa Corn Yield Test is to compare the performances of corn hybrids being grown in Iowa and to make this information available to Iowa farm operators. The presentation of this report does not imply approval or endorsement of the hybrids tested by any of the cooperating agencies.


Popcorn... Its Production, Processing And Utilization, John C. Eldredge, Walter I. Thomas Jul 1959

Popcorn... Its Production, Processing And Utilization, John C. Eldredge, Walter I. Thomas

Bulletin P

This is a brief summary of many years of research on all phases of the popcorn industry. Anyone wanting more detailed information on any of the topics mentioned should write the Agronomy Department, Iowa State University, Ames, Iowa.

The early history of popcorn is clouded. It is generally agreed that corn originated in the New World— along with popcorn and other subspecies including dent, flint, flour and sweetcorn.

Some students of the origin of corn contend that popcorn was one of the first— if not the first— subspecies to evolve from, wild grasses from which corn may have descended. In ...


The 1958 Iowa Corn Yield Test, C. D. Hutchcroft, J. L. Robinson Feb 1959

The 1958 Iowa Corn Yield Test, C. D. Hutchcroft, J. L. Robinson

Bulletin P

This bulletin is the report of the performance of corn hybrids tested at 24 locations in Iowa during the years 1955, 1956, 1957 and 1958. Summaries of 2-year, 3-year and 4-year periods are shown.

The presentation of this report does not imply approval or endorsement of the hybrids tested by any of the cooperating agencies.

The state was divided into 12 districts as shown on the Iowa map (fig. 1 ). Two test fields were planted within each district.

The name and address of each cooperator and the dates of planting and harvesting are shown in table A .

Any producer of ...


The 1957 Iowa Corn Yield Test, Charles D. Hutchcroft, Joe L. Robinson Feb 1958

The 1957 Iowa Corn Yield Test, Charles D. Hutchcroft, Joe L. Robinson

Bulletin P

The Iowa Corn Yield test has been conducted annually since 1920. The main purpose of the test is to provide information that will help Iowa farmers select seed of hybrids best adapted for the area in which they live. This bulletin reports the performance of hybrids tested in 1957. Also shown are comparisons of hybrids tested for 2-year, 3-year and 4-year periods.

The presentation of this report does not imply approval or endorsement of the hybrids tested by any of the cooperating agencies conducting the test.

Forty-three individuals or concerns made 1,019 district entries in 1957. These entries represented ...


The 1956 Iowa Corn Yield Test, Charles D. Hutchcroft, Joe L. Robinson Feb 1957

The 1956 Iowa Corn Yield Test, Charles D. Hutchcroft, Joe L. Robinson

Bulletin P

This bulletin reports the results of the 1956 Iowa Corn Yield Test. The purpose of the report is to provide information to help Iowa farmers select hybrids best adapted for the area in which they live.

The presentation of these results does not imply approval or endorsement of these hybrids by any of the cooperating agencies conducting the test.

The location of each test field and the division of the state into 12 districts is shown on the map (fig. 1). Each hybrid entry was accepted for testing in one or more districts and planted at two locations within each ...


The Water Problem In Iowa, F. W. Schaller, B. G. Riley Jan 1957

The Water Problem In Iowa, F. W. Schaller, B. G. Riley

Bulletin P

Water deficiencies throughout Iowa and other Midwest states the past 3 years have re-emphasized the importance of water to our farms and cities. Cities have had to resort to more costly means of procuring adequate water for their citizens. Farmers have been digging deeper wells, constructing ponds and hauling water to meet their domestic and livestock needs. Many farmers have started to use or have contemplated using water from streams and wells to irrigate their crops. Industries are becoming increasingly concerned with the availability of water as a major factor in locating and expanding plants.

Experience during the last 3 ...


Trees Of Iowa, Richard B. Campbell Mar 1956

Trees Of Iowa, Richard B. Campbell

Bulletin P

Trees, of all nature’s creations, are probably our closest friends. They enter every aspect of our lives and contribute to most of our necessities and luxuries.

Economically, they are indispensable. Without them our whole way of life would be greatly changed. That is why an acquaintanceship with the trees of our state goes beyond a pleasant experience to an obligation. To be able to recognize them by name and to know something of the many uses to which they are put is a worthy achievement.

Man’s dependence on wood is as old as man himself. Since man first ...


The 1955 Iowa Corn Yield Test, Charles D. Hutchcroft, Joe L. Robinson Feb 1956

The 1955 Iowa Corn Yield Test, Charles D. Hutchcroft, Joe L. Robinson

Bulletin P

This bulletin reports the results of the thirty-sixth annual Iowa Corn Yield Test. Similar tests have been conducted by the Iowa Crop Improvement Association in cooperation with the Iowa Agricultural Experiment Station since 1920. The purpose of these tests is to provide information' to help Iowa farmers select the hybrids best adapted for their areas.

More than 100 companies sell closed-pedigree hybrid seed com in Iowa. Other individuals and companies produce and sell only open-pedigree hybrids. With so many hybrids available, it isn’t easy to choose the ones best adapted to a particular farm or location. The function of ...


A Handbook For Rose Growers, Griffith J. Buck, E. C. Volz Feb 1955

A Handbook For Rose Growers, Griffith J. Buck, E. C. Volz

Bulletin P

Although the current wave of popularity enjoyed by the rose began in the nineteenth century under the sponsorship of the Empress Josephine of France, the rose has been a cherished inhabitant of gardens since earliest times. In this respect it shares the esteem of gardeners with the lily and violet. However, unlike those flowers, its popularity has never waned. Its close association with mankind has led to its inclusion in the customs, languages and cultures of the peoples of the western world. In tribute to its beauty the Greeks gave it the title “Queen of Flowers”—a title which it ...


The 1954 Iowa Corn Yield Test, Charles D. Hutchcroft, Joe L. Robinson Feb 1955

The 1954 Iowa Corn Yield Test, Charles D. Hutchcroft, Joe L. Robinson

Bulletin P

The Iowa Corn Yield Test has been an annual project of the Iowa Crop Improvement Association since 1920. This test is conducted in cooperation with the Iowa Agricultural Experiment Station. From the very beginning in 1920, the purpose of the test was to provide information to help Iowa farmers select the best-adapted open-pollinated varieties for planting on their farms. The purpose of the test in 1954, 34 years later, is to compare the performance of corn hybrids sold to Iowa farmers and to make this information available to them.

A survey made in 1954, showed that at least 112 companies ...


The 1953 Iowa Corn Yield Test, Joe L. Robinson, Charles D. Hutchcroft Feb 1954

The 1953 Iowa Corn Yield Test, Joe L. Robinson, Charles D. Hutchcroft

Bulletin P

The Iowa corn yield test is conducted by the Iowa Crop Improvement Association in cooperation with the Iowa Agricultural Experiment Station. This controlled test began in 1920. Personnel of these organizations do all planting and harvesting and compute performance data. This test is not a contest and should not be confused with the 5-acre Iowa Master Corn Growers Contest.


The 1952 Iowa Corn Yield Test, Charles D. Hutchcroft, Joe L. Robinson Feb 1953

The 1952 Iowa Corn Yield Test, Charles D. Hutchcroft, Joe L. Robinson

Bulletin P

The Iowa corn yield test is not a contest and should not be confused with the Iowa Master Corn Growers Contest. The Iowa Corn Yield Test is a controlled test where all planting, harvesting and computation of performance results is done by the Iowa Crop Improvement Association and Iowa Agricultural Experiment Station personnel. It has one purpose—to obtain unbiased information about the performance of many corn hybrids offered for sale by different growers and concerns. The 5-acre Master Corn Growers Contest, on the other hand, is a contest to see who can produce the most corn on a given ...


Nitrogen Fertilizers For Corn, Lloyd Dumenil Jul 1952

Nitrogen Fertilizers For Corn, Lloyd Dumenil

Bulletin P

Lack of nitrogen limits corn production on most Iowa soils. Many Iowa farmers can use nitrogen fertilizer profitably, our experiments show. As the supply increases, much more nitrogen fertilizer will be used— on a larger number of acres and at higher rates per acre.

Many of you have used nitrogen fertilizer on corn. But many more of you will be using nitrogen in the future. The Iowa Agricultural Experiment Station has conducted over 200 experiments with nitrogen fertilizer on cornfields over the state since 1943. It is the purpose of this bulletin to give you the information gathered from these ...


The 1951 Iowa Corn Yield Test, Joe L. Robinson, Charles D. Hutchcroft Feb 1952

The 1951 Iowa Corn Yield Test, Joe L. Robinson, Charles D. Hutchcroft

Bulletin P

The Iowa corn yield test has been conducted annually since 1920 by the Iowa Corn and Small Grain Growers’ Association in cooperation with the Iowa Agricultural Experiment Station. In 1951 the Iowa Com and Small Grain Growers’ Association was combined with the Iowa Crop Improvement Association. This change became effective July 4, 1951.

The majority of hybrids tested in the Iowa Com Yield Test were entered voluntarily by commercial hybrid corn companies. In addition, several hybrids were tested for the Agronomy (Farm Crops) Department and U.S.D.A. and for the Iowa Crop Improvement Association. The Iowa Crop Improvement ...


Alfalfa Varieties For Iowa, C. P. Wilsie Dec 1951

Alfalfa Varieties For Iowa, C. P. Wilsie

Bulletin P

Alfalfa has been called the queen of all forage crops“. In Iowa, this recognition is well deserved, for no other forage legume or grass produces such an abundance of highly nutritious roughage for feeding livestock. Compared with red clover, alfalfa has produced 25 percent greater yields of forage over a 20-year period in experiments on Webster and Clarion soils in central Iowa. Under acid soil conditions in eastern and southern Iowa, red clover may outyield alfalfa, but on most Iowa soils it would appear economically sound to apply the lime, phosphate and other soil treatments necessary for successful alfalfa production ...


The 1950 Iowa Corn Yield Test, Charles D. Hutchcroft, Joe L. Robinson Feb 1951

The 1950 Iowa Corn Yield Test, Charles D. Hutchcroft, Joe L. Robinson

Bulletin P

Each year Iowa farmers are faced with the problem of choosing adapted hybrids for their farms. The appearance of the seed in the bag is an inadequate measurement of value. The real test of value comes from an unbiased measure of performance of hybrids that are offered for sale. The purpose of the Iowa Corn Yield Test is to give you this kind of information. This test is not a “contest” . There are no prizes or awards. It is a test to measure differences among hybrids. W e hope the data presented in this bulletin will help you to select ...


Potato Growing In Iowa, E. S. Haber Mar 1950

Potato Growing In Iowa, E. S. Haber

Bulletin P

Iowa does not grow enough potatoes to supply its own needs. The average yield is about 100 bushels per acre. Because of high summer temperatures and uneven distribution of rainfall during the growing season, the climate is not ideal for the production of potatoes. However, yields in farm and home gardens could easily be doubled by following the practices outlined here. Several large commercial growers in Iowa average 400 to 500 bushels per acre of marketable potatoes each year.

An ideal potato soil should be high in fertility, friable, deep, high in organic matter, and should have an acid to ...


The 1949 Iowa Corn Yield Test, Joe L. Robinson, Charles D. Hutchcroft Feb 1950

The 1949 Iowa Corn Yield Test, Joe L. Robinson, Charles D. Hutchcroft

Bulletin P

The Iowa corn yield test is conducted by the Iowa Corn and Small Grain Growers’ Association in cooperation with the Iowa Agricultural Experiment Station. The purpose is to compare the performance of hybrids that are offered for sale to farmers. We hope the information in this bulletin will help you to choose the best hybrids available for planting in 1950.

The state was divided into 12 districts, and a test field was planted in each district. The counties included in each district and the location of each test field are shown in fig. 1.

Each entry was planted in all ...


Fertilizers Boost Yields Of Small Grains, Grasses And Legumes, L. B. Nelson, H. R. Meldrum Nov 1949

Fertilizers Boost Yields Of Small Grains, Grasses And Legumes, L. B. Nelson, H. R. Meldrum

Bulletin P

Corn is king in Iowa. But corn should not be grown continuously. It should be rotated with small grains, clover or alfalfa. Such a rotation insures a good nitrogen level in the soil, cuts down on erosion, and helps keep the soil in good tilth. These factors in turn result in higher corn yields. Too often we neglect or omit our small grains and seedings because they don’t give us the high cash return of corn. One way to make them more profitable is to increase their yields. You can give the yields a real boost with fertilizers.

There ...


Seeds Of Iowa Noxious Weeds, Duane Isely Nov 1949

Seeds Of Iowa Noxious Weeds, Duane Isely

Bulletin P

Weeds are one of the most serious problems faced by the American farmer. Losses due to weeds are estimated at 3 billion dollars annually. The. inroads on farm income brought about by reduction in yields resulting from weed infestations, and expenses involved in control measures constitute a major factor in the economical production of crops.

The best way to control weeds is to stop them before they reach our farms; this is particularly true of noxious weeds which still have a rather limited distribution. It is much easier and cheaper to prevent these pests from establishing themselves than to eradicate ...


Oak Wilt—A Serious Disease In Iowa, S. M. Dietz, Roy A. Young Jul 1948

Oak Wilt—A Serious Disease In Iowa, S. M. Dietz, Roy A. Young

Bulletin P

In the past 5 years wilt has come to be recognized as the most important oak disease in the upper Mississippi valley. The disease has been reported from Iowa, Wisconsin, Minnesota, Missouri and Illinois. The fungus Chalara quercina Henry has been shown definitely to be the cause of the disease.

Trees of the red oak group are killed quickly, usually within 30 to 60 days after wilt symptoms are apparent. Those of the white oak group may survive several years after infection with only a few branches being killed each year.

All types of oak apparently are susceptible since all ...