Science and Mathematics Education Commons^™

Use Of Artificial Enclosures To Determine The Survival Of Rana Pipiens Larvae In Upper Midwestern Agricultural Ponds, Joshua M. Kapfer, Mark B. Sandheinrich, Melinda G. Knutson

Journal of the Iowa Academy of Science: JIAS

Amphibians in the upper Midwest use agricultural ponds for breeding. Unfortunately, the risks (both direct and indirect) associated with using these ponds are poorly understood in both amphibian adults and larvae. In order to quantify these risks, we performed a comparison of larval survival rates between agricultural and natural ponds in southeastern Minnesota during the spring and summer of 2001. During this time, larval survival was observed in Rana pipiens tadpoles raised through metamorphosis in enclosures placed in agricultural and natural ponds. In addition, we measured the levels of nutrients commonly linked with agricultural ponds (i.e., ammonia, total phosphorous, and …

Farming In India, Winfield Scott

Science Bulletin

The following extract from an article written by Saint Mhal Singh of India (See Wallace's Farmer, April 30, 1909) is given as a description of farmers in that populous country. The Hindoos are the Eastern Branch of our own Aryan race.

A Classified Bibliography Of References For General Agriculture, Winfield Scott

Science Bulletin

III. FORAGE CROPS

A. Legumes.

A Classified Bibliography Of References For General Agriculture, Winfield Scott

Science Bulletin

Most teachers are exceedingly busy with their regular duties in the school. This leaves but little time to look up references or for that matter to plan the work once the school year has begun. Their success is largely determined by the preparation which has been made before the school year opens. The following references have been prepared for these busy teachers who would like to enrich their courses in agriculture, but who do not have time to study or select references.

Some Suggestions Concerning The Management Of The Laying Flock In Winter, Winfield Scott

Science Bulletin

I. Community Poultry Survey. The following outline will serve as a basis for the survey. After the completion of the survey make a study of data and draw conclusions as to cause of the failure of some flocks and the success of others.

Suggestive Procedure In Presenting A Course In Profitable Corn Production, Winfield Scott

Science Bulletin

Community Survey

1. How many acres of corn are grown on the home farm? 2. How many acres of corn grown on farms not represented in class? (This answer can be secured by assigning to each pupil a definite number of farms which are not represented in class) 3. What is the yield per acre of (a) the home farm? (b) the assigned farm? 4. What is the total yield on (a) the home farm? (b) the assigned farm?

New-Type Tests In Agriculture, Winfield Scott

Science Bulletin

Modern methods of testing a pupil's knowledge have been applied successfully in the teaching of agriculture. The writer submits a few sample question sets as illustrative material.

Presenting The Problems Of Feeding, H. Earl Rath

Science Bulletin

It has been the experience of the author that the teaching of feeding taxes the ingenuity of the agricultural instructor more than most other agricultural topics. The mere statement of principles without application or proof offers little of permanent value to the pupil. On the other hand, an attempt to pursue all, or even a small part, of the mass of data necessary to prove even a single principle, leaves the student groggy and confused. Neither is there time allowed in most courses for such procedure.

Laboratory Work In Poultry, H. Earl Rath

Science Bulletin

It is probable that the winter feeding, housing and management problems of poultry have been taken up in class before this time. If not, the alert agricultural instructor can develop some very practical laboratory work by conducting a survey in the community of the conditions under which poultry is kept, and then comparing the results obtained from flocks cared for under varying conditions.

Fall And Winter Material In Animal Husbandry, H. Earl Rath

Science Bulletin

Swine are now going to market in large numbers. This offers an excellent opportunity to study market types as represented in the herd and compare them with the sows from which they were produced. If brood sows for spring litters have not all been selected, the teacher has some valuable work for pupils in selecting the better prospects from the available groups.

Some Suggestions For Fall Laboratory Work In Animal Husbandry, H. Earl Rath

Science Bulletin

Now that the seed corn is selected for next spring, and the frost has put an end to grasses and other outdoor crops, the agricultural instructor often feels that little outdoor material is available for further study. With this in mind I would like to present a laboratory exercise that will provide for some valuable outdoor work, and can be used as the basis for much classroom study as well.