Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 30 of 103

Full-Text Articles in Entire DC Network

The 1980 Iowa Corn Yield Test Report, District 5, K. E. Ziegler, A. R. Campbell Dec 1980

The 1980 Iowa Corn Yield Test Report, District 5, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-first consecutive year for the test.


The 1980 Iowa Corn Yield Test Report, District 6, K. E. Ziegler, A. R. Campbell Dec 1980

The 1980 Iowa Corn Yield Test Report, District 6, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-first consecutive year for the test.


The 1980 Iowa Corn Yield Test Report, District 7, K. E. Ziegler, A. R. Campbell Dec 1980

The 1980 Iowa Corn Yield Test Report, District 7, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-first consecutive year for the test.


The 1980 Iowa Corn Yield Test Report, District 3, K. E. Ziegler, A. R. Campbell Dec 1980

The 1980 Iowa Corn Yield Test Report, District 3, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-first consecutive year for the test.


The 1980 Iowa Corn Yield Test Report, District 4, K. E. Ziegler, A. R. Campbell Dec 1980

The 1980 Iowa Corn Yield Test Report, District 4, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-first consecutive year for the test.


The 1980 Iowa Corn Yield Test Report, District 1, K. E. Ziegler, A. R. Campbell Dec 1980

The 1980 Iowa Corn Yield Test Report, District 1, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-first consecutive year for the test.


The 1980 Iowa Corn Yield Test Report, District 2, K. E. Ziegler, A. R. Campbell Dec 1980

The 1980 Iowa Corn Yield Test Report, District 2, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-first consecutive year for the test.


Small Family Farms In American Agriculture: Projected Incomes For North Central Iowa Small Farms, Center For Agricultural And Rural Development, Iowa State University, Mark R. Drabenstott, Earl O. Heady Nov 1980

Small Family Farms In American Agriculture: Projected Incomes For North Central Iowa Small Farms, Center For Agricultural And Rural Development, Iowa State University, Mark R. Drabenstott, Earl O. Heady

CARD Reports

This study hopes to provide sound, well-documented information on what current economic and farm trends mean for the survival of the small family farm. In addition, this research addresses some of the issues at the center of the dialogue on farm structure. By so doing, this study may contribute some helpful answers to these important farm structure questions.


An Econometric-Programming Model For Agricultural Policy Analysis, Center For Agricultural And Rural Development, Iowa State University, Wen-Yuan Huang, Reuben N. Weisz, Earl O. Heady Sep 1980

An Econometric-Programming Model For Agricultural Policy Analysis, Center For Agricultural And Rural Development, Iowa State University, Wen-Yuan Huang, Reuben N. Weisz, Earl O. Heady

CARD Reports

The U.S. Government plays an important role in national and regional agricultural production. The government uses production control programs, price supports, and loans to increase and stabilize national farm commodity prices and invests in research, development, and extension to promote national production. It has invested in various development projects, such as irrigation, to promote regional agricultural production or regulates land use to avoid permanent depletion of resources.


Supply Control And U.S. Agriculture: An Analysis Of National And Regional Impacts Under Land And Fertilizer Restrictions, Center For Agricultural And Rural Development, Iowa State University, Stanley A. Schraufnagel Jul 1980

Supply Control And U.S. Agriculture: An Analysis Of National And Regional Impacts Under Land And Fertilizer Restrictions, Center For Agricultural And Rural Development, Iowa State University, Stanley A. Schraufnagel

CARD Reports

In 1973 the demand for United States farm commodities was at a record level. Stocks of grain, which had been built up over a number of years, were rapidly depleted by several factors including world demand, export subsidies, and devaluation of the dollar. In response to this abnormal situation, The Agricultural and Consumer Protection Act of 1973 was enacted. This act, contrary to past legislation, emphasized the maintenance or increase of production. But the 1972 to 1974 per capita decline in world food production was shortlived, and output slowly returned to more normal levels. The Food and Agriculture Act of ...


An Analysis Of Selected Agricultural Policy Impacts On The U.S. Livestock Sector By An Econometric Simulation Model, Center For Agricultural And Rural Development, Iowa State University, Roland K. Roberts, Earl O. Heady Jun 1980

An Analysis Of Selected Agricultural Policy Impacts On The U.S. Livestock Sector By An Econometric Simulation Model, Center For Agricultural And Rural Development, Iowa State University, Roland K. Roberts, Earl O. Heady

CARD Reports

This study interfaces a U.S. livestock econometric model with a crop market econometric model and analyzes the impacts upon the livestock sector of various grain and livestock policy alternatives. The livestock model, which was developed at the Center for Agricultural and Rural Development (CARD) by Roberts and Heady, consists of five livestock and poultry commodities: beef, pork, lamb, chicken, and turkey. The crop market model is an updated and revised version of the market sector of the CARD National Agricultural Simulation Model. The crop market model is composed of feed grain, wheat, soybean, and cotton submodels.


Potential Effects Of Policy Alternatives On Regional And National Soil Loss, Center For Agricultural And Rural Development, Iowa State University, David R. Daines Jr., Earl O. Heady Jun 1980

Potential Effects Of Policy Alternatives On Regional And National Soil Loss, Center For Agricultural And Rural Development, Iowa State University, David R. Daines Jr., Earl O. Heady

CARD Reports

Agricultural soil erosion concerns many people in the United States. The depletion of topsoil and formation of gullies reduce the productivity of farmland, and farm family income, foreign trade income, and food production potential are threatened. Much of the soil eroded from farmland is carried by runoff water into the streams and reservoirs where it contributes to undesirable and even harmful environmental problems. These include reduced capacity of streams and reservoirs to supply water as well as increased flood danger, navigation obstacles, and water pollution with its many consequences.


Short And Long-Term Analysis Of The Impacts Of Several Soil Loss Control Measures On Agriculture, Center For Agricultural And Rural Development, Iowa State University, Burton C. English, Earl O. Heady Jun 1980

Short And Long-Term Analysis Of The Impacts Of Several Soil Loss Control Measures On Agriculture, Center For Agricultural And Rural Development, Iowa State University, Burton C. English, Earl O. Heady

CARD Reports

Environmental impacts created by population growth and economic development are major concerns of today's society. Increasing population necessitates increased and intensified production. As the world's standard of living increases, spurred by economic development, demands for agricultural commodities increase. These increases in demand result in expansion of agricultural production. This expansion requires changes in means of production, technology advancement, and increased education, all of which may result in changes in the environment. It is an aspect of these changes that is examined in this report. More specifically, this study analyzes impacts that occur under both a short and long-term ...


Econometric Analysis Of U.S. Farm Labor Markets, Center For Agricultural And Rural Development, Iowa State University, George H.K. Wang, Earl O. Heady May 1980

Econometric Analysis Of U.S. Farm Labor Markets, Center For Agricultural And Rural Development, Iowa State University, George H.K. Wang, Earl O. Heady

CARD Reports

Quantitative knowledge of factors affecting the demand and supply of farm labor is important in analyzing problems of farm income, the supply of farm products and labor mobility and adjustments. The empirical results of this study, based on recent time series data, hopefully can increase quantitative knowledge about market relationships for family farm labor and hired farm labor.


A Separable Programming Analysis Of U.S. Agricultural Export, Price And Income, And Soil Conservation Policies In 1985, Center For Agricultural And Rural Development, Iowa State University, William G. Boggess, Earl O. Heady Apr 1980

A Separable Programming Analysis Of U.S. Agricultural Export, Price And Income, And Soil Conservation Policies In 1985, Center For Agricultural And Rural Development, Iowa State University, William G. Boggess, Earl O. Heady

CARD Reports

The United States has long implemented supply control programs to reduce output and raise farm prices and incomes. The first supply control programs were created more than 45 years ago by the Agricultural Adjustment Act of l933. The nation also has long had a concern for conserving the land. In more recent times, the public has become concerned with maintaining and improving the environment. Soil conservation legislation dates from 1936 with passage of the Soil Conservation and Domestic Allotment Act. Supply control, soil conservation, and environmental programs generally have not been coordinated. Each program has been formulated to deal with ...


Research Notes : Performance Of F1 Generation Of Soybean In Relation To Colaspis Sp. And Diabrotica Speciosa, Jorge A.M. Rezende, Manoel A.C. Demiranda Apr 1980

Research Notes : Performance Of F1 Generation Of Soybean In Relation To Colaspis Sp. And Diabrotica Speciosa, Jorge A.M. Rezende, Manoel A.C. Demiranda

Soybean Genetics Newsletter

Resistance against the leaf beetles Colaspis sp. (C.occidentalis or near occidentalis according to Dr. R. White, Insect Identification and Beneficial Insect Introduction Institute, Beltsville, MD, USA) and Diabrotica speciosa (Gennar, 1824) were evaluated under greenhouse conditions, utilizing the resistant PI 227,687, two commercial susceptible varieties 'Santa Rosa' and 'Parana', and the two F1 between the PI and these commercial varieties. A free-choice type of test, with five replications, and artificial infestation of field-collected adults, was made and the percentage of leaf area eaten was visually estimated. Tables 1 and 2 show the percentage of leaf area eaten by ...


Research Notes : Frequency Of Spectrum Of Visible Mutations Induced By Gamma Rays In Soybean, M. F. Haque, U. Choudhary Apr 1980

Research Notes : Frequency Of Spectrum Of Visible Mutations Induced By Gamma Rays In Soybean, M. F. Haque, U. Choudhary

Soybean Genetics Newsletter

Although mutation studies are very common in most of the crop plants, soybean (Glycine max [L.] Merrill.) has received comparatively little attention by the mutation breeders. In view of this, systematic mutation studies were started at Ranchi Agriculture College, Kanke. The present study reports the effect of ganma rays on the frequency and spectrum of visible mutations in soybean. Materials and methods: Seeds of a soybean variety Sepaya Black, brought to uniform moisture content, were irradiated with ganma rays at Fertilizer Corporation of India, Sindri, Dhanbad (Bihar) at a dose of 10 kr, 20 kr, 30 kr, and 40 kr.


Mailing List, Soybean Genetics Newsletter Apr 1980

Mailing List, Soybean Genetics Newsletter

Soybean Genetics Newsletter

No abstract provided.


Committees Named By Soybean Genetics Committee : National Plant Genetic Resources Board, Soybean Genetics Newsletter Apr 1980

Committees Named By Soybean Genetics Committee : National Plant Genetic Resources Board, Soybean Genetics Newsletter

Soybean Genetics Newsletter

No abstract provided.


Index Of Authors, Soybean Genetics Newsletter Apr 1980

Index Of Authors, Soybean Genetics Newsletter

Soybean Genetics Newsletter

No abstract provided.


Announcements : Fourth International Symposium On Nitrogen Fixation, Soybean Genetics Newsletter Apr 1980

Announcements : Fourth International Symposium On Nitrogen Fixation, Soybean Genetics Newsletter

Soybean Genetics Newsletter

No abstract provided.


Research Notes : Inheritance Of Insensitivity To Long Daylength, R. I. Buzzell, H. D. Voldeng Apr 1980

Research Notes : Inheritance Of Insensitivity To Long Daylength, R. I. Buzzell, H. D. Voldeng

Soybean Genetics Newsletter

Genetic tests for daylength insensitivity have been run using PI 297,550 reported to be day-neutral by Polson (1972), as source material. Segregating material was grown under long days at various times from 1973 to 1979, either in a growth cabinet (Buzzell et al., 1974) or in a greenhouse with daylength 27 extended to 20 hours with incandescent light. Material was classified at 35 to 42 days after planting as either non-flowering, sensitive (S), or flowering, insensitive (I).


Research Notes : General Ideas About Soybean Genetics, Adel Rashad Al-Ali Apr 1980

Research Notes : General Ideas About Soybean Genetics, Adel Rashad Al-Ali

Soybean Genetics Newsletter

I have seen pubescence, especially in nature plants, in brown color against gray color. The two types are equally frequent among commercial varieties. In brown pubescent genotypes the hairs in the young plants are colorless, but after a few weeks' growth, many of the hairs grow on the stems and pods and to a lesser extent on the leaves with brown pigments.


Research Notes : The Monogenic And Digenic Control Of Hypocotyl And Flower Color In Soybeans, A. M. Olivieri, M. Lucchin, P. Parrini Apr 1980

Research Notes : The Monogenic And Digenic Control Of Hypocotyl And Flower Color In Soybeans, A. M. Olivieri, M. Lucchin, P. Parrini

Soybean Genetics Newsletter

The pigmentation of seedling hypocotyl is important in the knowledge, at a very early stage, of success in the cross of plants differing in this aspect. Several genes, among which are W1, W2, W3, W4 and wm, have been recognized as controlling flower pigmentation, and many studies indicate that flower and hypocotyl colors are closely associated. Hartwig and Hinson (1962) put in evidence that hypocotyl of W1W3W4 genotypes is darker than that of W1w3W4 ones.


Research Notes : Photoperiodic Response Of Wild Soybeans Collected From Localities Of Different Latitude In China, C. L. Wang, C. S. Mon, C. C. Tsu Apr 1980

Research Notes : Photoperiodic Response Of Wild Soybeans Collected From Localities Of Different Latitude In China, C. L. Wang, C. S. Mon, C. C. Tsu

Soybean Genetics Newsletter

In 1963, 16 wild soybeans (Glycine soja Sieb. and Zucc.) and 4 semicultivated soybeans (Glycine max (L . ) Merr.) were collected from localities of different latitude in China (Table 1). They were tested under different photoperiods for their photoperiodic response. The experimental results are shown in Table 2. From the experimental data in Table 2 we can clearly see that wild soybeans collected from Yangtze River Valley (30°18' - 31°54') and south region of China (26°56') are typical short-day plants.


Research Notes : Performance Of Soybeans, Lima Beans, And Corn In Pure And Mixed Culture, J. M. Joshi, Brenda L. Spence Apr 1980

Research Notes : Performance Of Soybeans, Lima Beans, And Corn In Pure And Mixed Culture, J. M. Joshi, Brenda L. Spence

Soybean Genetics Newsletter

One of the main objectives of the National Aeronautics and Space Administration (NASA) is to develop a controlled ecological life support system (CELSS). Such a system is needed to harness solar energy for inhabitants of the earth and to set up manufacturing facilities in space. Before this gigantic step, NASA is interested in evaluating ground-based manned demonstration of CELSS (Mason and Carden, 1979).


Usda Soybean Germplasm Collection, Soybean Genetics Newsletter Apr 1980

Usda Soybean Germplasm Collection, Soybean Genetics Newsletter

Soybean Genetics Newsletter

No abstract provided.


Report Of The Soybean Genetics Committee, R. L. Bernard, T. E. Devine, E. T. Gritton, Theodore Hymowitz, C. Newell, R. G. Palmer, J. R. Wilcox Apr 1980

Report Of The Soybean Genetics Committee, R. L. Bernard, T. E. Devine, E. T. Gritton, Theodore Hymowitz, C. Newell, R. G. Palmer, J. R. Wilcox

Soybean Genetics Newsletter

No abstract provided.


Front Matter, Soybean Genetics Newsletter Apr 1980

Front Matter, Soybean Genetics Newsletter

Soybean Genetics Newsletter

No abstract provided.


Research Notes : Oviposition Of Bemisia Tabaci (Genn.) In F1 Soybean Plants Of Crosses Between Pi 229,358 And Commercial Varieties, A. L. Lourencao, V. A. Yuki Apr 1980

Research Notes : Oviposition Of Bemisia Tabaci (Genn.) In F1 Soybean Plants Of Crosses Between Pi 229,358 And Commercial Varieties, A. L. Lourencao, V. A. Yuki

Soybean Genetics Newsletter

The whitefly Bemisia tabaci is an important vector of virus diseases of cotton, soybean, bean, tomato and other crops. Soybean is a good host for this insect and the increase in the soybean acreage in Brazil has brought an uprise in the whitefly population and whitefly-transmitted viruses. The introduction of resistance against this whitefly in soybean commercial varieties may benefit many crops in Brazil.