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Full-Text Articles in Entomology
The European Corn Borer Situation In South Dakota Spring 1952, Gerald B. Spawn
The European Corn Borer Situation In South Dakota Spring 1952, Gerald B. Spawn
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
The European corn borer, which has now assumed the role of "perennial pest" in South Dakota, has been conspicuous by its inactivity during the past few months. However, it is still the major pest of corn in our state. Since last fall the larvae (worms) have been spending their time in the "deep freeze" sleep of their kind of hibernation, hidden away in the snow-blanketed stalks of last years corn fields. This is nature's way of taking care of them during the winter, and all too many of the larvae are now becoming active again.
The Sweet Clover Weevil In South Dakota And Recommendations For Its Control, H.C. Severin
The Sweet Clover Weevil In South Dakota And Recommendations For Its Control, H.C. Severin
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
The sweet clover weevil, bitona cylindricollis Fahr. is one of the principal insect pests attacking sweet clover in South Dakota. While the pest works on sweet clover principally, it has also been found feeding on other clovers and on alfalfa, although only in small numbers. The sweet clover weevil is a European insect which was first reported to have been taken on this continent near Montreal, Canada, in 1924. In 1941 it was found in South Dakota in small numbers but at the present time it occurs abundantly over the entire state.
Recommendations For The Control Of The Most Important Insect Pests Of Potatoes In South Dakota, H.C. Severin
Recommendations For The Control Of The Most Important Insect Pests Of Potatoes In South Dakota, H.C. Severin
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
The important insect pests attacking potatoes in South Dakota must be controlled if a good or even a fair yield of potatoes is to be harvested. Many different species of insects attack growing potato plants in the state, but the insects of major importance do not form a long list. It is not necessary for the grower to be able to recognize the minor potato insects, but it is a distinct advantage to be able to recognize the major species. Further, it would be profitable if the potato grower would familiarize himself with the life cycle and seasonal h}story of …
How To Control Insects Harmful To Alfalfa Seed Production In South Dakota [Revised], H.C. Severin
How To Control Insects Harmful To Alfalfa Seed Production In South Dakota [Revised], H.C. Severin
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
In order that a grower of alfalfa seed may have the best chance of producing a. good seed yield, the harmful insects in the alfalfa field must be destroyed, while the beneficial pollinating insects should not be reduced but encouraged. The most harmful insects that affect the seed yield of alfalfa in South Dakota are the following: Grasshoppers of several species Crickets of several species Lygus and other plant bugs Clover, potato and other leaf hoppers Flea beetles of several species
Greenbug Control, Wm. M. Rogoff
Greenbug Control, Wm. M. Rogoff
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
Greenbug infestations in the State of South Dakota are unusual and have generally been broken by the interaction of natural factors such as predators, parasites, and weather. In the 1949 outbreak, the greenbug was seldom if ever the sole cause of damage in infested fields and in most cases spraying would not have been paid for by the remaining crop. The chemicals available for control are exceedingly dangerous to man and livestock, and their use should not be encouraged except where a clear and definite need has been shown to exist.
Control Of Grasshoppers Through Chemical Sprays Or Dusts Or Baits, H.C. Severin
Control Of Grasshoppers Through Chemical Sprays Or Dusts Or Baits, H.C. Severin
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
No abstract provided.
How To Control Insects Harmful To Alfalfa Seed Production In South Dakota, H.C. Severin
How To Control Insects Harmful To Alfalfa Seed Production In South Dakota, H.C. Severin
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
In order that a grower of alfalfa seed may have the best chance of producing a. good seed yield, the harmful insects in the alfalfa field must be destroyed, while the beneficial pollinating insects should not be reduced but encouraged. The most harmful insects that affect the seed yield of alfalfa in South Dakota are the following: Grasshoppers of several species Crickets of several species Lygus and other plant bugs Clover, potato and other leaf hoppers Flea beetles of several species
The Use Of Aircraft In European Corn Borer Control, Gerald B. Spawn
The Use Of Aircraft In European Corn Borer Control, Gerald B. Spawn
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
The European corn borer is at present considered to be the No. 1 insect pest of corn in South Dakota. It is now known (by specimen records) to be present in every county east of the Missouri river and in Lyman, Gregory and Tripp counties west of the Missouri River in South Dakota. During 1948 the corn borer did an estimated $2,500,000 worth of damage in our state~ In 1949 this damage figure was increased to $7,545,000.
The European Corn Borer, Gerald B. Spawn
The European Corn Borer, Gerald B. Spawn
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
The European corn borer was first recorded from South Dakota i n the summer of 1946. At that time Hr. H. C. Severin and the author found borers in corn in Union and Lincoln and Minnehaha counties. Less than half of one percent of the stalks in the fields were infested at that time. During the summer of 1948 the infestation had spread over most of the corn producing area of our state. By the fall of that year 36 counties were known to be infested . Several fields in the southeastern part of the state had 100 per cent …
A Discussion Of Ddt Through Questions And Answers, H.C. Severin
A Discussion Of Ddt Through Questions And Answers, H.C. Severin
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
DDT received and is still receiving more publicity than any insecticide ever enjoyed in the history of man's war with insects. Newspapers, farm journals, cattle magazines, horticultural publications, women's magazines, the radio, motion pictures and every other conceivable means of advertising have lauded DDT to the skies. Much of this publicity was released v1hile DDT was still not available to the civilian but only to our Armed Forces. This avalanche of publicity created hundreds of thousands of potential buyers, many of whom began to clamor for the new marvelous insecticide. Press releases were then made from the State Experiment Stations …
Second Report Of The Committee On Grasshopper Research Appointed By The American Association Of Economoic Entomologists. Part 1, Work Conducted By State Agencies Of The United States., Agricultural Experiment Station, South Dakota State College
Second Report Of The Committee On Grasshopper Research Appointed By The American Association Of Economoic Entomologists. Part 1, Work Conducted By State Agencies Of The United States., Agricultural Experiment Station, South Dakota State College
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
This is the second report of the Committee on Grasshopper Research. The appointment of such a committee was first authorized at the San Francisco meeting of the American Association of Economic Entomologists in 1942 and was appointed by President Harry B. Weiss. Dr. P. N. Annand, who succeeded Dr. Weiss as president of the American Association of Economic Entomologists in 1943, requested that the entire personal of the committee appointed by Dr. Weiss continue to function for another year. The committee members agreed to do this.
First Report Of The Committee On Grasshopper Research Appointed By The American Association Of Economic Entomologists, Agricultural Experiment Station, South Dakota State College
First Report Of The Committee On Grasshopper Research Appointed By The American Association Of Economic Entomologists, Agricultural Experiment Station, South Dakota State College
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
This is the first report of the Committee on Grasshopper Research which was authorized at the San Francisco meeting of the American Association of Economic Entomologists in 1942.
Tillage Methods In Grasshopper Control, Gerald B. Spawn
Tillage Methods In Grasshopper Control, Gerald B. Spawn
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
The eyes of the world are turned toward the American farmer as the individual to whom they must look for the production of a plentiful supply of food for our fighting forces, our Allies and for the hungry millions as they are liberated from Nazi rule and devastation. Grasshoppers have done much to defeat the Great Plains farmers in their effort to produce this food. In the central part of our State many fields of corn, badly needed for feed, were planted during the past year from which not one bushel of grain was harvested. Numerous fields of flax, very …
Tillage Methods In Grasshopper Control, Gerald B. Spawn
Tillage Methods In Grasshopper Control, Gerald B. Spawn
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
No abstract provided.
Active Projects In The United States And Canada Dealing With Grasshopper Research, H.C. Severin
Active Projects In The United States And Canada Dealing With Grasshopper Research, H.C. Severin
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
The sixteenth annual meetings of the Rocky Mountain Conference of Entomologists were held at Cameron Pass, Colorado, August 17 to August 21, 1941. Some time was devoted during these meetings to a discussion of the research work that is being done at the present with grasshoppers. It was felt by those participating in the discussions that it would be highly desirable if certain data were available concerning grasshopper research projects that are being actively investigated at the present time in the United States and in Canada. The author if this paper was asked to assume the responsibility of formulating an …
Tillage Methods In Grasshopper Control, Gerald B. Spawn
Tillage Methods In Grasshopper Control, Gerald B. Spawn
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
In the light of the present world food situation, the control of insects assumes a role of major importance in the agricultural program. Various insects, among which grasshoppers are one of the most notorious, attack our growing groups, upon which we depend for food. Others attack grains in storage; plant and animal products of many kinds; clothing and articles of furniture; and our domestic livestock. Man himself is not immune from attack as is borne out of by the epidemics of louse transmitted typhus which are today growing in extent in certain parts of Europe. The losses sustained by mankind …
Tillage Methods In Grasshopper Control, Gerald B. Spawn
Tillage Methods In Grasshopper Control, Gerald B. Spawn
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
During the past 88 years of agricultural history in South Dakota, 38 have been years in which grasshoppers were present in above normal numbers. During 17 of these 38 years grasshoppers have been a serious pest of agricultural crops in South Dakota and neighboring states. Many millions of dollars worth of cereal, forage and truck crops during each of these 17 years were destroyed by hungry hordes of the insects. The impetus given soil conservation work and farm woodlot and shelterbelt plantings of trees in the past few years has brought about the realization that grasshoppers are far more than …