| |
Publications
>
Publications Title Search
Publications
|
|
|
| |
|
|
Results: 42 Publications found
that contain growth
|
|
|
Abiotic Diseases of Woody Ornamentals
Of the two major types of disease (BIOTIC, those in which fungi, bacteria, viruses, nematodes, etc. are involved; and ABIOTIC, those in which non living things are involved), ABIOTIC diseases are by far the most important ones on landscape and nursery plants. Abiotic diseases are the result of the interaction, over an extended period of time, between the plant and one or more factors such as lack of space for root growth, the presence of chronic or acute levels of air or water pollutants, or the presence of extremes of moisture, heat, light, soil pH, and nutrients. Most abiotic diseases cause generalized symptoms to develop over a large portion of the tree or shrub. Wilting, yellowing, the development of smaller than normal leaves, slowing of growth, branch death, water sprout (epicormic shoot) formation, premature autumn leaf coloration, and heavier than normal seed production are some of the symptoms characteristic of abiotic diseases. Sometimes very similar symptoms develop in a location on very different species of plants. This is another indication that abiotic factors rather than living pathogens are involved in damaging plant health. Below is a brief review of abiotic diseases other than those caused by pollution.
Note: Available in PDF only; not available in hard copy from the Publications Distribution Center.
Department:
Plant Pathology
Catalog Number:
XL0001
|
 |
| |
|
|
Agricultural Alternatives: Beef Cow-Calf Production
The beef cow-calf business is well adapted to small-scale and part-time farmers who have land suitable for pasture and hay production. This publication discusses marketing and preconditioning, housing and facilities, health programs, using growth promotants, conditioning and feeding, and pastures. Also included are two sample beef cow-calf budgets. The first summarizes the costs and returns of a cow-calf enterprise using a feeding program of hay and pasture, and the second summarizes the costs and returns of a cow-calf enterprise using a feeding program of silage and pasture.
Department:
Agricultural Economics & Rural Sociology
Catalog Number:
UA304
|
 |
| |
|
|
Agronomy Facts 11: Inoculation of Forage and Grain Legumes
Legumes have the ability to form a mutually beneficial relationship with certain soil bacteria. The benefit to the plant is that these bacteria can take nitrogen from the air and make it available to the plant. This fact sheet describes the inoculation process to ensure Rhizobia bacteria growth for nitrogen fixation.
Department:
Crop & Soil Sciences
Catalog Number:
UC048
|
 |
| |
|
|
Agronomy Facts 25: Orchardgrass
Orchardgrass is a perennial, cool-season, tall-growing grass that starts growth early in spring, develops rapidly, and flowers during May under Pennsylvania conditions. This four-page fact sheet discusses orchardgrass varieties, establishment, harvest management, and fertility.
Department:
Crop & Soil Sciences
Catalog Number:
UC088
|
 |
| |
|
|
Agronomy Facts 3: Soil Acidity and Aglime
Soil acidity is among the important environmental factors that can influence plant growth and can seriously limit crop production. A sound liming program will increase soil productivity and can increase the efficiency of other inputs, such as fertilizers. This eight-page fact sheet discusses the causes of soil acidity, its effects on crop production, soil sampling, aglime, Pennsylvania lime law, and other aspects of soil acidity and liming.
Department:
Crop & Soil Sciences
Catalog Number:
UC038
|
 |
| |
|
|
Agronomy Facts 36: Persistence of Herbicides in Soil
Herbicides are applied to soil to manage weeds. While it is desirable for the chemicals to control weeds during the season of application, it is not desirable for them to persist and affect subsequent crop growth. This four-page fact sheet explains the factors that affect herbicide persistence, including soil factors, climatic factors, and herbicide properties, and it discusses ways to avoid herbicide persistence in subsequent crops.
Department:
Crop & Soil Sciences
Catalog Number:
UC105
|
 |
| |
|
|
Agronomy Facts 51: Starter Fertilizer
Starter fertilizers are a small amount of fertilizer applied near a seed to meet the nutrient demands of the seedling until the plant's root system develops and to enhance the development of the emerging seedling. This six-page fact sheet explains when to use a starter fertilizer, how starter fertilizer affects plant growth, and using starter fertilizers in producing corn, forages, small grains, sorghum, and soybeans.
Department:
Crop & Soil Sciences
Catalog Number:
UC132
|
 |
| |
|
|
Boxwood
Decline
Stunted growth and dieback occur. Young foliage turns grayish green or bronze and finally straw colored. Old leaves fall prematurely. Middle or top branches die. Sunken cankers form at the soil line or on branches in the crotches where dead leaves accumulate. Wood under the sunken canker is blackened.
Note: Available in PDF only; not available in hard copy from the Publications Distribution Center.
Department:
Plant Pathology
Catalog Number:
XL0015
|
|
| |
|
|
Cherry
Black knot; dark brown to black, hard swellings form on twigs and branches. At first these galls are small but continue to enlarge each year, becoming very rough. Each spring, galls are covered with dark, olive green, feltlike growth. Branches may be girdled and die. Note: Available in PDF only; not available in hard copy from the Publications Distribution Center.
Department:
Plant Pathology
Catalog Number:
XL0020
|
|
| |
|
|
Consumptive Water Use Restrictions in the Delaware River Basin
The Delaware River Basin Commission defines Consumptive Use as "water used by vegetation in the process of growth, including that stored in the body of the plant and that dissipated from its leaf and body surfaces by transpiration," or water incorporated in a product or animal.Consumptively used water is water, whether taken from a ground or surface sources, that is not available for reuse by others in the river basin. Note: Available in PDF only; not available in hard copy from the Publications Distribution Center.
Department:
Agricultural & Biological Engineering
Catalog Number:
F-199
|
 |
| |
|
|
Creating Healthy Landscapes 3: Plant with Care
One of the most important steps you can take to ensure the health of your plants is to plant them correctly. Poor plant growth and plant death are most often caused by failure to follow the recommended planting procedures covered in this publication. This two-page fact sheet is part of a series of fact sheets about understanding and using integrated pest management in landscapes.
Department:
Horticulture
Catalog Number:
UJ239
|
 |
| |
|
|
Dividing Perennials
A certain amount of time and energy is required to create and maintain a well-kept and visually appealing perennial garden. Results obtained from dividing perennials are well worth the time invested. By dividing perennials, a gardener can control a plant’s size, rejuvenate plant growth, and increase the number of desired plants. This publication is available in PDF only; it is not available in hard copy from the Publications Distribution Center.
Department:
Horticulture
Catalog Number:
XJ0034
|
 |
| |
|
|
Entomological Notes: Cereal Rust Mite
Significant losses in timothy from feeding by the cereal rust mite have been reported in parts of Pennsylvania recently. This very small insect pest feeds on the leaf bases of timothy creating symptoms that appear as retarded growth, stunting, and plant discoloration. Note: Not available in hard copy from the Publications Distribution Center.
Department:
Entomology
Catalog Number:
XF0120
|
 |
| |
|
|
Entomological Notes: Leaf Galls on Maple
Maple, Acer spp., leaves are often infested with a wide variety of brilliantly colored, odd-shaped galls and blotches. Some of these abnormal plant cell growths called galls are caused by very small eriophyid mites in the family Eriophyidae. Note: Not available in hard copy from the Publications Distribution Center.
Department:
Entomology
Catalog Number:
XF0161
|
 |
| |
|
|
Entomological Notes: Sweet Corn Thresholds
This fact sheet explains the larvae of three species of moths (typically called "worms") that infest sweet corn ears. The thresholds change with the growth stage of the corn. Note: Not available in hard copy from the Publications Distribution Center.
Department:
Entomology
Catalog Number:
XF0170
|
 |
| |
|
|
. |
