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Effects Of Salinity And Wet–Dry Treatments On C And N Dynamics In Coastal-Forested Wetland Soils: Implications Of Sea Level Rise, Xijun Liu, Alexander Ruecker, Bo Song, William H. Conner, Alex T. Chow 2017 Anhui Agricultural University

Effects Of Salinity And Wet–Dry Treatments On C And N Dynamics In Coastal-Forested Wetland Soils: Implications Of Sea Level Rise, Xijun Liu, Alexander Ruecker, Bo Song, William H. Conner, Alex T. Chow

Publications

Forested wetlands dominated by baldcypress (Taxodium distichum) and water tupelo (Nyssa aquatica) are commonly found in coastal regions of the southeastern United States. Global climate change and in particular sea level rise will alter the frequency and magnitude of wet/dry periods and salinity levels in these ecosystems. Soil microcosm experiments were set up to identify the effects of water level variations (0.4–3.0 g-water g-soil−1) and salinity changes (0, 1 and 5 ppt of NaCl) on greenhouse gas emissions (CH4, CO2, and N2O) and dissolved organic carbon (DOC) characteristics from forested wetland soils. Our results indicate ...


Irrigation For Vegetable Crops In Iowa, A. T. Erwin, E. S. Haber 2017 Iowa State College

Irrigation For Vegetable Crops In Iowa, A. T. Erwin, E. S. Haber

Bulletin (Iowa Agricultural Experiment Station)

Does it pay to irrigate vegetable crops in Iowa?

What does it cost to irrigate? and under what conditions are these costs, plus a profit, returned to the vegetable grower?

No complete answer to these questions can be given, because of the widely varying conditions involved—differences of rainfall, of crops, of costs, of soil, of topography. But considerable light is thrown on them by experiments which the Vegetable Crops Subsection of the Iowa Agricultural Experiment Station has conducted during several years at Ames and on “Muscatine Island.’’


The Peppers, A. T. Erwin 2017 Iowa State College

The Peppers, A. T. Erwin

Bulletin (Iowa Agricultural Experiment Station)

Peppers are native plants of tropical America, one of the few vegetables which still abound in the wild state. The earliest mention of them was in a report of Columbus’ first voyage.

The garden peppers are regarded as dwarf, early maturing forms of Capsicum frutescens. They are either annuals or perennials, according to climatic conditions.

The peppers are both self and cross-fertilized.

The collection of peppers grown in securing the data for this bulletin, included over 200 varieties, a large proportion of which were synonyms, secured from the American and European seed trade.


The Effect Of Various Containers On The Growth Of Vegetable Plants, E. S. Haber 2017 Iowa State College

The Effect Of Various Containers On The Growth Of Vegetable Plants, E. S. Haber

Bulletin (Iowa Agricultural Experiment Station)

The experiments indicate that clay pots are superior, as a general rule, to composition pots, paper bands or flats as a growing medium for vegetable plants. If the plants in these substitute containers, however, are watered, about every week or 10 days with a solution of nitrate of soda, sulfate of ammonia or any other nitrogenous fertilizer at the rate of 1 ounce to 1 gallon of water, plants equal to those produced in clay pots are possible. A few species may do as well without nitrates; cabbage plants grown in peat pots were slightly better than those in clay ...


Evaluating Mine Soil Prepared By Scraper Pans For Herbaceous Plants And Pine Seedlings At An East Texas Lignite Surface Mine, Hannah Z. Angel 2017 Stephen F. Austin State University

Evaluating Mine Soil Prepared By Scraper Pans For Herbaceous Plants And Pine Seedlings At An East Texas Lignite Surface Mine, Hannah Z. Angel

Electronic Theses and Dissertations

Since 1974, Luminant Mining Company, LLC (Luminant) has planted over 38.7 million trees on its reclaimed lignite surface mine operations in Texas. For decades, the use of improved reclamation techniques on Luminant’s mined lands have resulted in over 31,160 ha reclaimed to forests, wildlife habitat, and pastures with productivity levels similar to those found on unmined lands. The development of new reclamation methodologies offers opportunities to further improve productivity of planted trees at Luminant’s Martin Lake Oak Hill Mine in east Texas. The conventional haulback or ‘truck shovel’ reclamation method uses haul trucks for the selective ...


Bordeaux Spray For Tip Burn And Early Blight Of Potatoes, A. T. Erwin 2017 Iowa State College

Bordeaux Spray For Tip Burn And Early Blight Of Potatoes, A. T. Erwin

Bulletin (Iowa Agricultural Experiment Station)

Tip burn and early blight, the two most common foliage troubles of the potato in Iowa, are of enough economic importance in the corn belt to be dealt with profitably thru the use of the bordeaux spray. Five seasons of spraying experiments at the Iowa Agricultural Experiment station point to that conclusion. These tests also suggest that under Iowa conditions five applications of bordeaux mixture per season are likely to be most profitable. That number gave an average annual crop increase of 20 bushels of potatoes per acre and an average annual increased profit of $9.62 per acre. Three ...


Evergreen Trees For Iowa, G. B. MacDonald 2017 Iowa State College

Evergreen Trees For Iowa, G. B. Macdonald

Bulletin (Iowa Agricultural Experiment Station)

Evergreens, or coniferous trees, are of great importance in Iowa for shelterbelts and windbreaks, to say nothing of their value for ornamental planting. Altho only a few evergreens are native to Iowa, a large number have been successfully introduced into the state, including several from Europe. The most desirable of these are listed in this bulletin with brief descriptions of their characteristics, their value for various purposes and methods of planting and growing.

A shelterbelt is essential on every farm in Iowa to protect the home buildings and the feed lots. If it is not provided by natural timber, then ...


Preservative Treatment Of Fence Posts, G. B. MacDonald 2017 Iowa State College

Preservative Treatment Of Fence Posts, G. B. Macdonald

Bulletin (Iowa Agricultural Experiment Station)

One of the big expense bills that the Iowa farmer pays annually is for fence posts. If the 25,000,000 posts required each year for Iowa’s fences were set in one line and spaced a rod apart, they would build a fence three times around the earth at the equator; their cost would be nearly $4,000,000. That bill is so large because wooden posts, which are almost wholly used, are short lived. Yet numerous tests extending over many years made by the Iowa Agricultural Experiment station show that this heavy expense may be cut in two ...


Cold Storage For Iowa Grown Apples., Laurenz Greene 2017 Iowa State College

Cold Storage For Iowa Grown Apples., Laurenz Greene

Bulletin (Iowa Agricultural Experiment Station)

In continuing its investigation of cold storage for Iowa grown apples, upon which a partial report was made in September, 1909*, the horticultural section of the Iowa Agricultural Experiment Station has found further evidence that the principal commercial varieties of apples grown in the state may be handled with profit. The four years’ work with many different varieties all gives support to the value of this practice to Iowa apple men.

Since 1909 the Station has also developed many other new facts of importance to Iowa apple growers, not the least of them pertaining to the freezing of apples and ...


Wood Working Industries Of Iowa, Hu Maxwell, John T. Harris 2017 U. S. Forest Service

Wood Working Industries Of Iowa, Hu Maxwell, John T. Harris

Bulletin (Iowa Agricultural Experiment Station)

The study upon which the report on the Wood-Using Industries of Iowa is based, was conducted by the Forest Service in cooperation with the Iowa Agricultural Experiment Station, the work being done under the direction of O. T. Swan, in charge, office of Wood Utilization, Forest Service, United States Department of Agriculture, and G. B. MacDonald, forester of the Iowa Agricultural Experiment Station. The statistics were compiled from data collected in the spring of 1912 and cover a period of one year from January 1 to December 31, 1911. J. T. Harris of the Forest Service visited all parts of ...


Orchard Heating, Laurenz Greene 2017 Iowa State College

Orchard Heating, Laurenz Greene

Bulletin (Iowa Agricultural Experiment Station)

Late spring frosts cause immense losses of fruit in Iowa and help to discourage growers until many of them neglect, destroy or dispose of their orchards.

For that reason the Iowa Agricultural Experiment station is seeking to determine the value and efficiency of some of the orchard heating devices now on the market. During the season of 1911 tests were conducted in three different orchards and in addition several individual growers in various sections of the state also tried out heating as a means of frost protection. While the work is not complete and must be extended through other seasons ...


Spraying Practice For Orchard And Garden, S. A. Beach 2017 Iowa State College

Spraying Practice For Orchard And Garden, S. A. Beach

Bulletin (Iowa Agricultural Experiment Station)

This bulletin tells briefly how to fight the more common insect pests and plant diseases which infest Iowa orchards and gardens, especial attention being given to the apple. The directions are up-to-date and are based upon the work of scientific investigators and the experience of practical fruit growers. While they are given to meet the peculiar needs under Iowa conditions, they are nevertheless general, and the strength of the mixtures and number of sprayings will need to be varied somewhat to meet changing conditions.


Planning And Adorning The Farmstead, A. T. Erwin 2017 Iowa State College

Planning And Adorning The Farmstead, A. T. Erwin

Bulletin (Iowa Agricultural Experiment Station)

Neat, conveniently arranged buildings, a well-kept lawn attractively bordered with trees and shrubs add greatly to the appearance and value of the farm and to the happiness of its occupants.

The farmstead, including as it does the general area occupied by the farm buildings, house and lawn, is the center of activity for the farm. Its planning and development, both from the standpoint of convenience and of securing an attractive landscape effect, deserve special consideration.


The Hardy Catalpa In Iowa, C. A. Scott 2017 Iowa State College

The Hardy Catalpa In Iowa, C. A. Scott

Bulletin (Iowa Agricultural Experiment Station)

The hardy catalpa is one of the best fence post trees that can be grown in Iowa. Nearly all the catalpa plantations in the state have been studied by the forestry section of the experiment station. A large majority of them are successful, and seem to be a paying proposition for their owners.

The hardy catalpa is a southern tree, its natural locality being throughout southern Ohio, Indiana and Illinois, eastern Missouri, and southward. Iowa is considerably north of its natural range. In the southern half of the state there is very little danger of winter killing if given a ...


Cold Storage For Iowa Apples, H. J. Eustace, S. A. Beach 2017 Iowa State College

Cold Storage For Iowa Apples, H. J. Eustace, S. A. Beach

Bulletin (Iowa Agricultural Experiment Station)

Under present conditions of apple growing in Iowa temporary gluts are common in very many local markets from the time the earliest fruits begin to ripen till early autumn or mid autumn followed usually by an immediate shortage as soon as the early fruit passes out of season. This holds true to a constantly increasing extent from south central Iowa to the north boundary of the State. The result is low prices locally for much of the early fruit with high prices usually prevailing from mid autumn to the end of the season. Even though prices are high very often ...


The Onion Industry In Pleasant Valley, Iowa, A. T. Erwin, W. L. Harter 2017 Iowa State College

The Onion Industry In Pleasant Valley, Iowa, A. T. Erwin, W. L. Harter

Bulletin (Iowa Agricultural Experiment Station)

The Pleasant Valley onion district in Scott county, Iowa, presents a striking example of crop specialization and intensive culture in contrast to the typical corn belt farming which prevails in this state. Approximately 500 acres are devoted exclusively to onions on a continuous crop basis, and much of the land has been devoted to this particular crop for decades. This is one of the oldest agricultural regions of the state.

In the following pages is presented a summary of a farm survey* of the onion industry of this region, including a study of the cultural practices, the problems of disease ...


The Growth, Returns And Uses Of Planted Cottonwood In Iowa, G. B. MacDonald 2017 Iowa State College

The Growth, Returns And Uses Of Planted Cottonwood In Iowa, G. B. Macdonald

Bulletin (Iowa Agricultural Experiment Station)

Cottonwood is one of the fastest wood producers grown in Iowa.

A fair yield from 35 year old cottonwood plantations is 30,000 board feet of lumber and 50 cords of fire-wood per acre.

The average production found in single rows one-half mile long was 71,000 board feet, and 274 cords of fire-wood.

When growing fence posts cottonwood will produce over 600 first class posts in 6 years, or over 1,400 in 12 years, per acre.

Cottonwood posts untreated last about three years and should not be used until treated with creosote or some other preservative. Creosoting cottonwood ...


Potato Growing In Iowa As Affected By Temperature, A. T. Erwin, R. A. Rudnick 2017 Iowa State College

Potato Growing In Iowa As Affected By Temperature, A. T. Erwin, R. A. Rudnick

Bulletin (Iowa Agricultural Experiment Station)

The white potato is distinctively a cool-season crop. On the average the best yields are secured by planting early in order to get the crop as far along as possible in advance of the high summer temperatures.

The heaviest yields, on the average, were secured from the plantings made shortly after the seasonal rise in temperature crosses the 40° line.

For central Iowa, this period is usually reached during the first half of April.

In a date-of-planting-in-relation-to-yield experiment with late potatoes, covering six years, the results were as follows:

The average of the April plantings was 124.4 bushels per ...


Controlling Downy Mildew Of Lettuce, A. T. Erwin 2017 Iowa State College

Controlling Downy Mildew Of Lettuce, A. T. Erwin

Bulletin (Iowa Agricultural Experiment Station)

With the rapid development of the greenhouse industry in Iowa in the last decade, lettuce has become the most important vegetable crop grown under glass in this state. In some seasons a disease known as downy mildew is one of the most serious troubles met with in forcing this crop. Competition with garden lettuce from the Pacific Coast and the Gulf States, together with the high cost of production in recent years, makes the control of downy mildew an urgent question with many Iowa growers.

The downy mildew of lettuce, long known as a destructive garden and greenhouse disease, is ...


Some Reports From Trial Stations On New Orchard Fruits And Shrubs., J. L. Budd 2017 Iowa State College

Some Reports From Trial Stations On New Orchard Fruits And Shrubs., J. L. Budd

Bulletin (Iowa Agricultural Experiment Station)

In the spring of 1878 we began the work of testing, on the college grounds, promising new, or not well known varieties of the orchard fruits, ornamental trees and shrubs, and sending out for trial those that gave most promise. A t this time the Varieties on trial included seedling varieties of the apple with local notoriety from Canada, Wisconsin, Minnesota and Iowa ; such cherries as the Montmorency, Carnation, Plumstone Morello, and the seedlings of Mr. D. B. Weir, of Lacon, Ill.; such native plums as had attracted local attention in the prairie states, and such shrubs and ornamental trees ...


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