Plant Sciences Commons^™

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.

W221-Mid-South Multi-State Evaluation Of Treatment Thresholds For Tarnished Plant Bug In Pre-Flowering Cotton, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Prior to bloom, the primary hemipteran pest of cotton in the Mid-South is the tarnished plant bug (TPB). Cotton fleahopper and clouded plant bug are other hemipteran pests that are occasionally observed. These pests reduce yields by feeding on squares (flower buds), which often shed. Mid-sized or larger squares may not shed, but feeding injury is generally evident in the form of yellow staining on the surface of the square and damaged anthers in flowers (i.e., dirty blooms). Square loss can delay maturity and sometimes reduce yield. Delays in crop maturity, even when not causing yield loss, can increase mid-and …

W111-Cotton Insects:Slugs And Snails, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W110-Cotton Insects: Clouded Plant Bug, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W075-Cotton Defoliation Timing, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Defoliation is an often-overlooked process that, if done properly, can pay large dividends. Defoliation is relatively easy in some situations and extremely difficult in others. Defoliation is the application of chemicals to encourage or force cotton leaves to drop from the plant, allowing harvest of the crop in a timely manner. Proper defoliation requires a balancing act between killing the leaves too quickly or not affecting the leaf at all. Successful defoliation requires that the leaf must stay alive long enough to begin the formation of an abscission zone, resulting in leaf drop. Killing the leaf too rapidly results in …

W074-Managing Late-Planted Cotton, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Traditionally, cotton planting in Tennessee starts near the end of April and continues until mid-May, with the bulk of the cotton planted during the first and second weeks of May. Oftentimes, producers are forced to plant outside of these recognized windows. Although Tennessee has recently experienced longer than normal growing seasons and higher than average DD-60 accumulation, long-term historical data shows that in 50 percent of the last 30 years, a killing freeze could occur during the second and third weeks of October (Table 1). Fortunately, early-maturing varieties, Bt cotton for worm control and boll weevil eradication allow for a …

W073-Making Cotton Replant Decisions, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Each year, many producers are forced to replant cotton due to adverse conditions. Replant decisions are often the most difficult decisions to make, so second-guessing is very common. This publication is intended to aid in your replant decision-making.

W035-Cotton Insects: Spider Mites, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W034-Cotton Insects: Loopers, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W033-Cotton Insects: Fall Armyworm, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W032-Cotton Insects_Cutworms, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W031-Cotton Insects: Tobacco Budworm, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W030-Cotton Insects: Bollworm, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W029-Cotton Insects: Beet Armyworm, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W028-Cotton Insects: Cotton Aphid, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W027-Cotton Insects: Stink Bugs, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W026-Cotton Insects: Thrips, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W025-Cotton Insects: Tarnished Plant Bug, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W024-Cotton Insects: Boll Weevil, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

W023-Cotton Insects: Whiteflies, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

Sp341-W-Insects In Grain Bins, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

One of the most common insects in stored grain is the Indian-meal moth, Plodia interpunctella (Hubner). These moths are called “flour moths” in Tennessee because they feed on flour or milled products. In farm grain bins, they prefer broken grains or grains damaged by other pests and seldom attack sound grain kernels. They cause problems by spinning webbings as immature. This causes lower quality in stored grain.

Sp721 Sunflower: An Alternative Crop For Tennessee Producers - Production Guidelines And Tennessee Hybrid Trials, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Tennessee producers are interested in crops that can be grown to diversify and/or complement their current cropping systems that include corn, cotton, soybeans and wheat. There is a growing demand for birdseed, and sunflower is an important component of that feed, either as a sole ingredient or in a blend with other seeds such as millet, corn, sesame, sorghum, wheat and oats. Sunflower oil is used for human consumption and is also a suitable feedstock for biodiesel. An increasing demand for biodiesel will increase the demand for oilseed crops such as sunflower. Thus, there may be increased opportunities for some …

Sp721-Sunflower: An Alternative Crop For Tennessee Producers - Production Guidelines And Tennessee Hybrid Trials, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Tennessee producers are interested in crops that can be grown to diversify and/or complement their current cropping systems that include corn, cotton, soybeans and wheat. There is a growing demand for birdseed, and sunflower is an important component of that feed, either as a sole ingredient or in a blend with other seeds such as millet, corn, sesame, sorghum, wheat and oats. Sunflower oil is used for human consumption and is also a suitable feedstock for biodiesel. An increasing demand for biodiesel will increase the demand for oilseed crops such as sunflower. Thus, there may be increased opportunities for some …

Rr10-03-2009 Soybean Variety Performance Tests In Tennessee, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

No abstract provided.

Sp290-K The Hessian Fly In Wheat, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

The Hessian fly is a pest of winter wheat in Tennessee and other wheat-growing states. This pest caused disastrous losses in Tennessee wheat in the mid- 1980s. Later planting of wheat and the use of wheat varieties resistant to Hessian fly minimized economic losses from this pest. In the coming years, potential economic losses from Hessian fly could increase due to the lack of resistance varieties.

In 2009, very little attention was given to Hessian fly infestations. However, there are some varieties with moderate resistance to biotype L Hessian fly. None are completely resistant. Some of the better methods to …

Pb1580 2010 Weed Control Manual For Tennessee, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

This manual contains the 2010 University of Tennessee weed control recommendations for corn, grain sorghum, cotton, soybeans, burley and dark tobacco, wheat, forage crops, sunflowers and farm ponds. These recommendations are based on results of research and demonstrations conducted by the Agricultural Experiment Station and the Agricultural Extension Service. Decisions regarding recommendations are made by the University of Tennessee Weed Control Committee and are based on available data at various locations in the state.

This publication contains pesticide recommendations that are subject to change at any time. The recommendations in this publication are provided only as a guide. It is …

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

Field & Commercial Crops

No abstract provided.

Sp639-2010-2009 Grain Sorghum Hybrid 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.

Pb1395-Insects In Farm-Stored Grain: 2009 Prevention And Control, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Insects damage stored grain in two ways:

1. Direct feeding damage, resulting in loss of weight, loss of nutrients, reduction in germination, reduction in grade and a lowering of market value.

2. Deterioration and contamination by their presence, resulting in downgrading of grain and lowering of market value because of foreign matter in grain (insects and insect parts), odors, molds and heat-damaged grain.