Treesearch

Fertilizer application equipment can apply chemicals in dry or liquid form or as manure. The appropriate equipment will place the material at the desired rate in the desired location. In bareroot nurseries, fertilizer is usually applied dry in granulated pellets or coated form. Where in plentiful supply, animal manure may be used, both for nutrients and organic matter. In container production, nutrients may be applied in granular slow-release form or, more commonly, injected into the irrigation water supply.

Incorporating fertilizer directly into the container growing media is a very new practice. Previously, it was believed that such a practice would result in toxicity due to direct contact with the root system and/or over fertilization. However, with the improved technology for controlled-release fertilizer, there is renewed interest in this practice. The objective of this study is to quantify the seedling response to various fertilizer treatments as compared to unfertilized seedlings and plug+1 seedlings.

Increased public awareness and concern have prompted new efforts in riparian revegetation using streambank bioengineering techniques. Planting in a riparian zone is very different than planting on upland sites. Riparian planting zones should be used to ensure that the vegetation is planted in the appropriate location so that the planting does not create more problems than was it was designed to treat. The types of plant materials used in riparian revegetation projects include: 1) dormant nonrooted hardwood cuttings which include 3 size classes: propagation cuttings, branched cuttings, and...

A brief history of nursery production of forest tree seedlings in Ontario is presented. The industry dates back to 1904, when the first nursery in the province was established. From 1922 to 1958, eleven additional nurseries were built, the majority of which were situated in northern Ontario. Although the original experiments with containerized seedlings were conducted in 1965, it took more than 15 years for this type of production to become operational. In 1981, the provincial government provided funding for the establishment of private tree seedling nurseries. Today, there are 34 private...

The Interregional Research Project 4 (IR-4) was initiated in 1963 to obtain national pesticide label regsitrations for use on food and fiber. This program has an emphasis on minor uses or specialty crops. In this arena in the United States today it includes 600 crops.

The effects of preplant soil treatments and seed treatment on seedling production and soilborne pests were evaluated on loblolly pine (Pinus taeda) at three forest nurseries. Treatments were applied in 1998 at the Flint River Nursery (Byromville, GA) and at the Hauss Nursery (Atmore, AL). In 1999, treatments were applied at the Carter Nursery (Chatsworth, GA) and continued at Flint River Nursery. Soil treatments included 67% methyl bromide/33% chloropicrin at 350 lb/ac (MC33), EPTC (Eptam 7-E), chloropicrin at 150 and 300 lb/ac (CH150 and CH300) and in combination with EPTC (CH150E and...

Using soil test results is a very useful practice IF the sample(s) of soil are good representations of the nursery soil. The lab results can be no more accurate than the samples submitted, and IF you know the texture of the nursery soil, and IF you know which soil extractant was used by the lab, and IF you know what crop is to be grown, and IF, for trees, which species is to be grown and whether it will be 1 +0s, 2+0s, 3+0s, 2+1 s, 2+2s, 3+2s, plug-ls, etc., and IF, for a cover crop, whether summer or winter crop, turned under green, turned under mature, harvested and straw turned under,...

Pine seedling production and pest problems were evaluated in methyl bromide-fumigated and nonfumigated plots in two fields at a South Georgia nursery. In one field, fumigation increased loblolly pine seedling bed density in only 1 of 4 years. Seedlings were often significantly larger in fumigated than nonfumigated plots. In the other field, no differences were observed between treatments for bed densities or morphological characteristics. The primary pest problem in nonfumigated plots was nutsedge; most other weeds were controlled through the nursery's weed control program. Plant-parasitic...

The RPM system (Root Production Method) is a multistep production system of container tree production that places primary emphasis on the root system because the root system ultimately determines the tree's survival and performance in its outplanted environment. This particular container production system has been developed to facilitate volume production, in a high-quality tree with good height-caliper balance. Approximately 80% of our production consists of native trees, many of which present transplanting difficulties using conventional nursery growing systems. We specialize in oak...

Physiological testing is rapidly coming into use as a means to determine the condition of nursery stock and predict how it will respond to treatment or use. One such test, the electrolyte leakage test, can be used to measure cold hardiness and detect tissue damage. The principle of this test is that when cell membranes are damaged, electrolytes leak out into the water in which the tissue is immersed and can be measured by the conductivity of the solution. The test for damage is nonspecific in that anything that damages the membranes, such as cold, heat, disease, or mechanical injury, will...