Life Sciences Commons^™

Sp618 Corn And Wheat Silage Tests In Tennessee 2012, Fred L. Allen, Richard D. Johnson

Field & Commercial Crops

No abstract provided.

Rr13-02 Corn Grain Hybrid Tests In Tennessee 2012, Fred L. Allen, Richard D. Johnson, Robert C. Williams Jr., Angela Thompson Mcclure

Field & Commercial Crops

No abstract provided.

Sp618-2011 Corn, Sweet Sorghum And Small Grain Silage Tests In Tennessee 2011, Fred L. Allen, Richard Johnson, Virginia Sykes

Field & Commercial Crops

No abstract provided.

W196 Sourthwestern Corn Borer In Tennessee, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W195 European Corn Borer, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

Sp341-Q Sugarcane Beetle In Field Corn, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

The sugarcane beetle is an occasional pest of field corn in Tennessee. Infestations have been spotty to date and not too damaging in terms of stand and yield losses. However, the beetle caused serious damage in corn during the 2001 and 2002 growing seasons. The fields affected were corn planted into pasture, sod or no-till and some conventional tillage corn.

Sp618-2010-2009 Corn Hybrid & Sweet Sorghum Silage Tests In Tennessee, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

Pb1768 2010 Insect Control Recommendations For Field Crops –, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

An Integrated Pest Management (IPM) program integrates control tactics including cultural practices, variety selection, biological control and insecticides to manage insect pest populations so that economic damage and harmful environmental side effects are minimized. Insecticides should only be used on an as-needed basis; therefore, insect scouting must be conducted regularly throughout the season to determine if an insecticide application is warranted.

W076 Selecting Corn Hybrids For The Field, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Hybrid selection is one of the most important decisions a producer will make. Hybrid traits are introduced through breeding or genetic modification and there are many available options. Certain physical traits fit some field environments better than others or are better suited to specific end uses, such as silage vs. grain. The higher seed cost of specialty traits means growers must balance perceived benefits with the cost of using the newer technology. In addition to yield, producers should consider days to maturity, disease and insect resistance, and sometimes herbicide tolerance when selecting a hybrid to plant.

W077 Planting Corn For Grain In Tennessee, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Although seed genetics can dictate yield, a poorly planted seed never reaches its yield potential. Favorable weather plays an important role in stand quality, but producers can save money on replant costs by managing factors that can be controlled, such as field selection and planting time, seedbed preparation, seeding rate, planter settings and insect management.

Sp618-2008-2008 Corn Hybrid And Sweet Sorghum Silage Tests In Tennessee, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W166 Accent™ Herbicide For Weed Control In Sweet Corn, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

The convenient control of perennial and annual grass weeds in fresh market sweet corn has been difficult for a number of years due to the lack of available postemergence herbicide options. Accent™ herbicide has been labeled for use in processing sweet corn for a number of years but was not cleared for fresh market use until fall 2006. One concern with Accent™ use is that a small number of sweet corn hybrids could have low tolerance to nicosulfuron, the active ingredient (Figure 1). Additionally, delayed applications of the herbicide or applications with improperly calibrated spray equipment could result in ear …

W164 Replanting Corn - In A Failed Roundup™ Ready Corn Stand, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

In spring 2007, a widespread freeze occurred that led to the replanting of about 200,000 acres of corn in Tennessee. In most years, replant decisions have to be made on a limited number of acres when corn fields have insufficient stands for optimum yields. Producers are then forced to make a number of decisions quickly, because planting delays, particularly into mid-May, can greatly affect yield potential of the replanted crop.

Sp290-J Cutworms In Field Corn, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Field corn is susceptible to damage from several species of cutworms that occur in Tennessee. Usually, this damage occurs in early planted corn when the temperatures are cool and the ground is moist. Cutworms are less likely to cause economic damage after corn reaches 2 feet in height.

Sp341-G Corn Earworm On Sweet Corn, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

The corn earworm, Helicoverpa zea (Boddie), is the most serious insect pest of sweet corn in Tennessee. This pest feeds directly on the market product.

Sp341-K Common Stalk Borer In Field Corn, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

The common stalk borer in Tennessee is reported to attack several crops in addition to field corn. However, the preferred host of the insect is giant ragweed. This preference is due to the largeness of the stem in which the larvae can mature. Fields of corn planted into a no-till situation are preferred by the moths because of the grassy weeds in those fields. The adult moth deposits eggs on grassy weeds in the early spring. Later, the larvae will migrate to any corn planted in the fields.

Sp341-Y Western Corn Rootworm, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Three species of corn rootworms are found in Tennessee. The Western corn rootworm is the most destructive of the three species. This insect is now prevalent from Texas to the Dakotas, and has moved into Tennessee within the past 10 to 15 years. Until 1955, this rootworm was found in Nebraska, Colorado, Kansas, South Dakota and Iowa. The Western corn rootworm has traditionally moved into the territory of the Northern corn rootworm, which is also found in Tennessee.

Pb443 Corn Production In Tennessee, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Corn is the most important grain crop in Tennessee. The total acreage of corn grown for grain and silage has been about 700,000 to 900,000 since 1970, with the silage acreage remaining about 140,000 acres each year since 1970. This is about one-fourth the total acreage of corn grown in Tennessee in 1930, but increased yields have tended to offset reduced acreage.

The average yield 55 years ago was about 20 to 25 bushels per acre, which was no better than the yields recorded 100 years ago. Tennessee farmers increased corn yields from 35 bushels per acre in 1955, to …

Pb1600 Control Of Voles In No-Till Corn, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Voles have historically been a problem for farmers using minimum and no-till technologies to establish field corn. As land enrolled in the Conservation Reserve Program (CRP) is returned to row crops, this problem is expected to increase. Retaining established cover by no-till farming decreases erosion, improves water quality, increases wildlife habitat and conserves moisture when compared to conventional tillage practices. However, voles that have established colonies and flourished beneath the cover established under CRP, crop residue or hay crops can devastate crop plantings. Stand reductions of 80-100 percent have been reported in no-till corn where vole numbers are high.

Pb1544 Comparing The Cost Of Broadcasting Versus Injecting Nitrogen In No-Tillage Corn, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No-tillage has become a popular production option with many Tennessee farmers in the past 20 years. In 1993, no-tillage production systems were used on 290,000 acres of corn in Tennessee, or 44 percent of the total corn acreage planted in the state (TDA). Many farmers see no-tillage as a way to reduce the cost of growing corn. Others have chosen no-tillage as a way to comply with governmental regulations covering the farming of highly-erodible soils.

Input levels and prices are important to consider in any production system. A major expense in corn production is nitrogen (N) fertilizer. No-tillage budgets published …