Physical Sciences and Mathematics Commons^™

A Non-Gall Forming Eurosta Solidaginis (Diptera: Tephritidae), W. Bryan Stoltzfus

Journal of the Iowa Academy of Science: JIAS

Eurosta Jolidaginis (Fitch) can parasitize Solidago canadensis without forming a gall. This non-gall former apparently escapes most of the parasitism and predation of the gall forming fly. Levels of host-plane infestation by non-gall formers may approach the frequency of gall formation.

The Scientist's Role In The Controversy Over Genetic Engineering, Regulation And Utilization Of Microorganisms: A Symposium Presented At The L00th Annual Meeting Of The Iowa Academy Of Science, Iowa State University, Ames, Iowa April 21-23, 1988: Introduction, Arthur K. Weissinger

Journal of the Iowa Academy of Science: JIAS

The introduction of technologies for the direct genetic manipulation or alteration of organisms offers tremendous promise of improved agronomic prosperity through the enhancement of existing agricultural systems and through development of alternative products and methods. These technologies also pose philosophical, socioeconomic, and environmental questions. A number of these questions were considered at the bioethics symposium that was held here at Iowa State last November, the purpose of which was to examine the social, ethical, regulatory, and legal issues associated with the application of cell culture, molecular biology, and other so-called biotechnologies to agriculture.

Questions And Discussion [The Scientist's Role In The Controversy Over Genetic Engineering, Regulation And Utilization Of Microorganisms: A Symposium], Arthur Weissinger

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Pollen Fertility And Agronomic Performance Of Sorghum Hybrids With Different Male-Sterility-Inducing Cytoplasms, R. E. Secrist, R. E. Atkins

Journal of the Iowa Academy of Science: JIAS

Effects of three sources of male-sterility-inducing cytoplasm in sorghum [Sorghum bicolor (L.) Moench] were compared in crosses with 217 male parents. Hybrids of these parents and A2 Redbine 58', 'A3 Combine Kafir 60', and 'A4 Martin' female parents were evaluated for percentage stained pollen, seed set of bagged panicles, plant height, and days to midbloom. Additionally, hybrids of 12 of the inbreds crossed to each female parent were evaluated for grain yield and other agronomic traits in comparison with hybrids in A1 male-sterility-inducing cytoplasm.

Twenty-one inbreds restored pollen fertility to hybrids with A2 cytoplasm, 11 restored pollen fertility to …

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Cytoplasmic Effect On Groat Protein Content In Lnterspecific Matings Of Avena Sativa L. And A. Sterilis L., A. Rezai, K. J. Frey

Journal of the Iowa Academy of Science: JIAS

Thirty sets of reciprocal isopopulations, each with 20 Fi-derived oat lines from the BC₀, BC₁, and BC₂ of all possible matings among five Awia slerilis L. accessions and two A. saliva cultivars, were evaluated in a replicated field trial to determine whether groat protein content was influenced by cytoplasmic inheritance and to study associations between protein content and agronomic traits. A. slerili cytoplasm had no direct effect on groat protein content, but significant interactions between the cytoplasms and nuclear genes from A. saliva and A. s1erilis were detected. Thus, the potential may exist for improving …

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Agenda For Action - Casco Bay, Department Of Environmental Protection

Maine Collection

Agenda For Action - Casco Bay

Department of Environmental Protection, Augusta, Maine (January, 1989)

Contents: Introduction / The Problems : Bacteria, Toxics, Nutrients / The Solutions / Recommendations / References

Are Artificial "Witham" Surface Collectors Adequate Indicators Of Caribbean Spiny Lobster, Panulirus Argus, Recruitment?, Mark J. Butler Iv, William F. Herrnkind

Biological Sciences Faculty Publications

Understanding the local dynamics of Caribbean spiny lobster (Panulirus argus) postlarval influx, settlement, and recruitment may be essential for the responsible management of this important and heavily exploited resource. Most lobster recruitment research programs in the Caribbean employ derivations of the "Witham"-type surface collector to monitor postlarval (puerulus) lobster influx. However, the relevance of data obtained from surface collectors with respect to the estimation of actual puerulus influx, settlement, or recruitment to subsequent benthic juvenile stages remains untested. We investigated that relevance on regional (i.e., tens of kilometers) and local (i.e., tens of meters) scales by examining the …

Erosion Potential Of Phomopsis-Resistant Lupins, D J. Carter, Paul Findlater

Journal of the Department of Agriculture, Western Australia, Series 4

During lupin harvesting, up to 20 per cent of the grain remains on the ground. This non-harvested or pilt grain is a valuable feed for sheep during early summer because the pods, leaf and stem generally provide little nutrient in the stubnbles. In addition, the more efficient the weed control, the less valuable are the stubbles.

The disease lupinosis caused by Phomopsis leptostromiformis restricts the amount of grazing from the lupin stubbles, and hence the risk of wind-erosion of stubble paddocks.

However, the introduction of lupin varieties moderately resistant to Phomopsis and with reduced potential to cause lupinosis means that …

The Effect On Farm Profit Of Conserving Stubble To Prevent Wind Erosion, A D. Bathgate

Journal of the Department of Agriculture, Western Australia, Series 4

Over-grazing of stubbles is a major cause of winf erosion on WesternAustralian farms. Stubble contributes to the 'roughness' of the paddock; as the roughness is reduced, the risk of winf erosion is increased.

The risk of lupinosis in sheep has previously reduced the likelihood of lupin stubble being over grazed, but the development of Gungurru, a phomopsis-resistent variety of lupin, has increased the potential for over-grazing and hence the probability of wind erosion.

This article describes the economic benefit (or cost) of conserving stubble at the conservation standards.

Nitrogenous Fertilisers For Cereals In Different Rotations. Results From 1989 Trials., I. Rowland, M. G. Mason

Experimental Summaries - Plant Research

Trial 78BA1

Nitrogen fertiliser requirement in alternate crop - pasture rotation.

Location: Badgingarra Research Station.

Trial 88B4

Effect of amount and quality of organic matter residues on response to N.

Location: Badgingarra Research Station.

Trial 86WH36, 86M44

Lupin/wheat rotation.

Location: Wongan Hills Research Station, Carrabin Research Station.

Trail 87N084, 86M39, 86ME64, 87N25, 87KA49

Pea/wheat rotation.

Location: Konnongorring, Merredin Research Station, Narembeen, Newdegate Research Station, Nyabing,

Phosphate Nutrition Of Burr Medic And Yellow Serradella., Blakely Paynter

Experimental Summaries - Plant Research

Trial 89ME50, 89ME51, 89ME53, 88ME55, 89ME56

Location: Mutadgin, Doodlakine, Noongar, Mt Hampton, Nungarin

Compare the response of burr medic to topdressed P with the response of wheat to drilled P.

Trial 89ME52, 89ME54

Location: Noongar, Mt. Hampton.

Compare the response of burr medic to topdressed P with the response of wheat to drilled P.
Measure the response of burr medic pasture to applied potash.

Trial 89ME59

Location: Beacon

Compare the response of yellow serradella to topdressed P with the response of wheat to drilled P.

Trial 89ME60, 89ME61

Location: Muntadgin

Compare the response of yellow serradella to topdressed P with …

Effect Of Seed Origin And Seed Phosphorus On The Growth Of Lupins., M. M. Riley, M. D. Bolland, K. Adcock

Experimental Summaries - Plant Research

Trial: 89BA29

Location: Badgingarra Research Station, Paddock 4A2, old block.

Lupin cv. Gungurru sieved to uniform size and sown without inoculation. No basal fertilizers were applied as the soil had previously been treated with high rates of superphosphate, micro-nutrients and potassium. Muriate of potash topdressed on 18/8/89 at 100 kg/ha.

Influence Of Soil Acidity On Cereals And Acidification Rates., P. J. Dolling

Experimental Summaries - Plant Research

Soil acidity and the availability of nitrogen to cereals.

To determine the extra nitrogen available due to better pasture legume growth after liming.
To determine the extra nitrogen released from soil organic matter after liming.

Trial 89NO81

Location: South Cunderdin.

Trial 89NO82

Location: Cunderdin

Trial 89NO83

Location: Konnongorring.

Trial 89NO84

Location: Jennacubbine.

Trial 88AL35

Location: Woogenellup.

Trial 88TS54

Location: Three Springs.

Trial 88NO76

Location: Goomalling.

Trial 88NO77

Location: Ejanding.

Tactical Nitrogen Decisions For Wheat, J. W. Bowden, R. J. Lunt

Experimental Summaries - Plant Research

Trial 88MO41, 88WH40 (2CE), 88WH40 (4W), 89NO77, 89MO47, 89MO47, 89MO49, 89BA33 (1), 89BA33 (2), 89WH70 (1), 89WH70 (2)

Locations: Wannamal, WHRS, Grass Valley, Regan's Ford, Badg. New Block 3CE

In order to test tactical and other fertilizer decision making methods (Table 1), we carried out three trials in 1988 and a further seven trials in 1989 (Table 2).

To date this programme has provided a lot of information which can be used to test and validate current (and future) methods of predicting yield potential and nitrogen status of a crop as the season progresses. However, our inability to predict end …

Seed Phosphorus In Cereals And Lupins., R W. Bell

Experimental Summaries - Plant Research

Experiment 89SC21, effect of seed origin and seed phosphorus on growth of wheat.

Experiment 89SC23, effect of seed phosphorus, seed size and seeding density on the growth of wheat at two soil P levels.

Experiment 89GL32, effect of solution P supply on the early growth and nodulation of lupins grown from seed with three levels of P.

Experiment 89GL33, effect of soil P supply on the early growth and nodulation of lupins.

Experiment 89SC20, effect of seed origin and seed phosphorus on growth of lupins.

Long Season Wheat Production On The South Coast Of Western Australia., W R. Smith, A P. Webster

Experimental Summaries - Plant Research

Fungicide, time of sowing, wheat variety. Time of sowing, wheat variety, 89AL3, 89ES3, 89JE1, 89KO3. Wheat phenology, 89E5, 89MT8. Aphid control, time of sowing, wheat variety, 89E3, 89MT5.

Formulation Of A Management Scheme For The Swordfish Fishery Of The Eastern Caribbean, Harold F. Upton

Marine Affairs Theses and Major Papers

During the 1983 season, two U.S. longline vessels initiated the first attempts at the commercial exploitation of swordfish in the Eastern Caribbean. In 1986, the number of U.S. vessels participating in the fishery surpassed 40 with landings of nearly two million pounds per season. The sudden influx of participants and technology to the region has resulted in a variety of user conflicts and associated policy issues. Major areas of concern involve the conservation of a heavily exploited resource and the distribution of benefits which accrue from resource exploitation among the resource-adjacent island states and U.S. fishing operations. This study examines …

Socioeconomic Aspects Of Small-Scale Commercial Fisheries Development In The Republic Of The Marshall Islands, Cheryl Ann Mandich

Marine Affairs Theses and Major Papers

This study examines the sociocultural aspects of fishery development in the Republic of the Marshall Islands. It is based upon field research conducted through interviews with indigenous fisherfolk, business people, and expatriates. The Marshall Islands were selected because they have a limited economic base, yet have abundant fishery resources which have considerable potential to generate foreign exchange. Many studies focus on the technical aspects of fishery resource development. However, none address the sociocultural factors that influence its success. This thesis demonstrates that several aspects of Marshallese fishing society, some of which correspond to characteristics of the peasantry identified by Rogers …

Antarctic Peninsula Mysticete Whales: Conservation And Research, Gregory Schofield Stone

Marine Affairs Theses and Major Papers

This paper reports original research from two recent studies in the Antarctic Peninsula area, reviews past sighting information and policies affecting mysticete whales, and recommends future research. Due to poor management by the International Whaling Commission, mysticete whales are among the most severely depleted species groups in the Antarctic. The combined total Antarctic harvest from 1920 to 19867 for blue Balaenoptera musculus, fin B. physalus, sei B. borealis, minke B. acutorostrata and humpback Megaptera novaeangliae whales was over one million animals. The effect of this hunting pressure is the dominant factor determing the present status of Antarctic …

Perceptions Of The Texas State And Federal Closures Among Inshore Shrimpers In Galveston Bay, Texas And Calcasieu Lake, Louisiana, Nina H. Garfield

Marine Affairs Theses and Major Papers

The inshore shrimp fisheries along the coast of the Gulf of Mexico represent a significant portion of the total shrimp harvest in the Gulf. The shrimp harvest is allocated to the offshore and inshore fisheries through the use of season closures. In 1981, the Gulf of Mexico Regional Fisheries Management Council began implementing a policy known as the Texas Closure; a seasonal closure of the waters of the Federal Conservation Zone concurrent with the traditional season closure of the state waters of Texas. One impact of the Texas Closure on the offshore fishery has been fleet displacement from Texas to …

Neue Literatur (Page 42), Martin-Luther-Universität

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Neue literatur listed on page 42 of Erforschung biologischer Ressourcen der Mongolischen Volsrepublik, Band 6 (1985/1986).

In der Zeitschrift Polish Ecological Studies, Vol. 8, No 1-2 (1982) erschienen folgende Beiträge.

In der Zeitschrift "Acta Facultatis Rerum Naturalium Universitatis Comenianae" Zoologia Nr. 28 (1985), Bratislava, erschienen folgende Beiträge.

Faunistische Untersuchungen Und Erfahrungen In Der Ektoparasitenbekämpfung Bei Landwirtschaftlichen Nutztieren In Der Mongolischen Volksrepublik, Th. Hiepe, H. Splisteser, G. Ilchmann, Regine Ribbeck

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Die bedeutsamen Ektoparasitosen der Nutztierbestände in der Mongolischen Volksrepublik - Hypodermose bei Rind und Yak, Räude bei Rind, Yak und Schaf, Östrose beim Schaf, Gasterophilose beim Pferd sowie Zeckenbefall und Vermipsyllose bei Rind, Yak, Schaf und Ziege werden an Hand eigener Untersuchungen hinsichtlich Erregerspektrum, Schadwirkung und Bekämpfung vorgestellt.

Животноводству мнР эктопаразиты приносят значительный ущерб. Экономические потери выражаютая в снижении производства шерсти, мяса и молока у пораженных животных, а также в повреждении кожевенного сырья. Кроме того, эктопереэиты играют роль как возбудители зоонозов. С 1970 г. по проекту из Г ДР и с участием специалистов из Г ДР производится плановая борьба с …

Artenliste Der Vögel Des Chubsugul-Gebietes, D. Sumjaa

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Die Ornisliste der Chubsugulseezone erfaJ3t gegenwärtig 244 Arten (1973 - 168 Arten). Die Liste schlieJ3t Vertreter von 17 Ordnungen, 42 Familien und 129 Gattungen ein (62,4% von allen Vogelspezies der MVR). Für das Chubsugul-Gebiet sind 56 Vogel arten erstmals beobachtet worden, davon waren 5 neu für die Fauna der MVR (Larus hyperboreus, Arenaria interpres, Aquila heliaca, Tetrao parvirostris, Plectrophenax nivalis).

In der Ornithofauna lassen sich unterscheiden: Brutvogelarten und bedingt nistende Arten 206 (46 ansässig und 160 Zugvögel), Durchzieher - 22, ,Irrgäste - 12, nur im Winter vorkommende Arten - 4. Von den 244 Vogelarten …

Über Die Konzeptionelle Entwicklung Der Ornithologischen Erforschung .Der Mongolei, G. Mauersberger

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Die bisherigen Ergebnisse der Erforschung der mongolischen Avifauna legen einen analytischen Überblick über ihre Geschichte nahe. Unlängst hat PIECHOCIU (1984) ei.nen Abril'; dieser Geschichte von ihren Anfängen bis heute vorgelegt. Ein Blick auf die konzeptionelle Entwicklung offenbart beträchtliche Unausgewogenheiten zwischen den einzelnen ForschunHsdisziplinen.

1. Der Bestand der Vogelfauna ist in den Grundzügen erfa~t, doch blieben weite Lückenoffen, narnentlich in den östlichen und südöstlichen Landesteilen.

2. Die phänologische Forschung wird künftig (nicht nur während des Herbstzuges) zu verstärken, aber auch auf ein weiteres, vor allem ökoloSJisch determiniertes Spektrum auszudehnen sein.

3. Die zooueographischen BeziehunHen erscheinen verhältnismäßig klar, müssen aber neu bewertet …

Land Capability Assessment Methodology For Rural-Residential Development And Associated Agricultural Land Uses, M R. Wells, Peter Donald King

Land resources series

No abstract provided.