Sectional notes     

H. G. Zuckerman  C. H. Metzger  B. A. Brown  W. B. Ward  Frank W. Hussey  R. W. Donaldson  E. E. Isaac  Marx Koehnke  William H. Martin  K. H. Fernow  E. V. Hardenburg  Robert Schmidt  E. M. Gillig  E. B. Tussing  E. R. Jackman  T. E. Odland  S. P. Swenson  John Tucker 《American Journal of Potato Research》1936,13(8):223-232

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Coliform myositis in a calf     

L L Wallace  B Fagin  D Schmidt  W H Fales 《Journal of the American Veterinary Medical Association》1990,197(11):1487-1488

Coliform myositis was diagnosed in a young calf with signs of pain, swelling, and edema of the right hind limb. Diagnostic methods included bacteriologic culture and antimicrobial susceptibility testing. The organism isolated was a gas-producing Escherichia coli. The infection responded to administration of trimethoprim/sulfadiazine, to which the organism was susceptible in vitro.  相似文献   

Economic potential of agroforestry for public recreational parks     

Josef M. Broder  Brehon H. Odronic 《Agroforestry Systems》1990,10(2):99-112

The availability of public recreational facilities is being threatened by growing demands, limited supplies, and declining government funding. In response to these pressures, the economic potential of agroforestry for supplementing operating budgets of public recreational parks is examined in a case study park consisting of 324 hectares. Agroforestry enterprises native to the area were selected for development on 70 hectares of the site. Linear programming was used to determine the optimum combinations of 23 agroforestry regimes composed of the following activities: 1) conventional forestry planting, tree density of 1682 trees/hectare, 2) the selected agroforestry planting with hay, tree density of 1495 trees/hectare, 3) the selected agroforestry planting with grazing, 4) hay production, and 5) rental of pasture for grazing. The objective function of the study was to maximize the net present value of the study site subject to land, labor, capital, and minimum annual income constraints. The preferred optimal regime generated $1782 per hectare from an agroforestry planting configuration of 1495 trees/hectare with 75 percent hay, 25 percent grazing, and no annual income requirements. Minimum annual income requirements of $2400 and $4800 were feasible but suboptimal from a net present value criteria. The study found that agroforestry could be used to privatize selective activities of public recreational parks and thus enable public agencies to provide these facilities more effectively.  相似文献   

Über die Anwendung von Apfelwickler- und Pflaumenwickler-Pheromonfallen beim Warndienst für Kleingärtner     

Dipl.-Biol. H. -U. Schmidt 《Journal of pest science》1987,60(2):27-31

It is reported about the experiences with the Biotrap Lockstoff-Falle für Schadinsekten AW and PW (HOECHST AG, Frankfurt) to improve plant protection prognosis against the codling moth (Cydia pomonella Busck.) and the plum fruit moth (Cydia funebrana Tr.) for allotment holders, settlers and houseowners. The flight activities of these pests were observed with pheromone traps by 19 to 27 additional voluntary assistants (allotment holders) since 1982 to support the official plant protection service in monitoring the a. m. moth species.—For a time of 20 weeks the assistants reported each monday the number of captured moth's to the plant protection office. Curves of the flight activities were based on the weekly moth captures. Drawing conclusions from the four year lasting observations, it is evident, that the main flight activity of the one generation of the codling moth lasts from the 26. to the 29. calendary week. The first generation of the plum fruit moth can be obtained during the 21. and 23. calendary week and the second one from the 30. to the 33. calendary week. The suitable time for control measures varied from year to year and was published between 21st and 23rd of June for the codling moth and between the 12th and 23rd of July for the plum fruit moth. The experiment with allotment holders as additional assistants was very successfull.  相似文献   

Investigations on the influence of wood-inhabiting bacteria on the pH-value in trees     

O. Schmidt 《Forest Pathology》1986,16(3):181-189

Regardless of their isolation origin, bacteria from wetwood of fir and poplar, from polluted beech and spruce trees, and from discoloured timber of Ilomba, acidified aerobically glucose-rich substrates by organic acid production and increased the pH of protein media by ammonia. The pH-changes occurred in laboratory nutrient media and also in the physiologically characterized capillary liquids and wood flours of fir, poplar and spruce.  相似文献   

    

Schmidt H. 《Journal of pest science》1960,33(5):79

Ohne Zusammenfassung  相似文献   

Active enzymes in wood chips and their action on lignin during outside storage     

Prof. Dr. K. Fischer  Ing. I. Schmidt 《Wood Science and Technology》1991,25(4):281-287

Summary Wood storage has a great influence on the efficiency of a pulpmill. Great problems arise when using outside chip storage, especially in processing hardwoods, in that hardwood chips discolorate after a few days, which is not the case with spruce chips. The causes of such a different behavior of beech and spruce were investigated. It could be shown that a sufficient amount of active peroxidase, malate dehydrogenase and oxygen are prerequisites for the formation of phenoxy radicals within the beech lignin. This causes formation of new chromophores that discolorize the wood. Sufficient amounts of such enzymes are present in beech wood after harvesting.  相似文献   

Symptoms in slash pine seedlings following inoculation with the cone rust fungus Cronartium strobilinum     

A. N. Shukla  R. A. Schmidt  T. Miller 《Forest Pathology》2001,31(6):345-352

Six‐week‐old seedlings of slash pine (Pinus elliottii) were inoculated with sporidia of Cronartium strobilinum, which is the cause of southern cone rust disease, by wounding the apical tips of the seedlings. Pycnial sori developed abundantly within 1 month of inoculation on the epicotyl and primary needles. The progress of the pathogen was confirmed histologically within the cells of the stem and haustoria were observed near the nucleus of the cells. In the needles, pycnial pustules developed and the fungus was abundant in the mesophyll.  相似文献   

Untersuchungen über die Wirkung von Bacillus thuringiensis Berliner auf die Dörrobstmotte (Plodia interpunctella Hbn.)     

Dipl.-Biol. H. -U. Schmidt 《Journal of pest science》1979,52(3):36-39

For testing the prompt and long-term effectiveness of a THURICIDE-dust containingBacillus thuringiensis var.kurstaki, serotype 3a, 3b with a viable spore count of 6 to 10 million per mg and an insecticidal activity of 3,2×10³ international units (IU) per mg, the biopreparation was applied to rye on which larvae of the Indian Meal Moth (Plodia interpunctella Hbn.) were fed. A concentration of 20 mg (64×10³ IU) of dust in 100 g of grain caused in 82% mortality, and a six-fold higher concentration (120 mg, 384 × 10³ IU respectively) resulted in 99,0% mortality. The efficiency of the preparation was not reduced by storage for as long as 5 months in any five tests, which were at temperatures from 12°C to 28°C with 75% r.h. The larval stage of the surviving was prolonged by 3 to 4 weeks. Surviving moths, whose larvae were reared on grain to which the preparation was applied, were fertile and did not infest the following generation.  相似文献   

Data bank of rDNA-ITS sequences from building-rot fungi for their identification     

Schmidt  O.  Moreth  U. 《Wood Science and Technology》2003,37(2):161-163

Wood Science and Technology -  相似文献