The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on January 26, 2010) Thesis advisor: Dr. Timothy P. Holtsford. Includes bibliographical references.

Thesis (M.S.)--West Virginia University, 2002. / Title from document title page. Document formatted into pages; contains viii, 77 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 71-77).

Thesis (Ph. D.)--West Virginia University, 2004. / Title from document title page. Document formatted into pages; contains xiii, 108 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 93-99).

M. Tech. Agriculture. / Investigates the effect of photo-selective nets on plant growth parameters (plant height, leaf area, leaf chlorophyll, stem diameter, flowering intensity, and fruit settings), pest and disease incidence, and yield (number of fruits per plant) in three selected cultivars.Secondly, to investigate the effect of shading on fruit quality parameters (fruit mass, firmness, colour, soluble solids content, and titratable acidity) and health promoting compounds (ascorbic acid, lycopene content, β-carotene, total phenols and flavonoids, and antioxidant scavenging activity) in three selected tomato cultivars.

published_or_final_version / abstract / toc / Botany / Doctoral / Doctor of Philosophy

No description available.

No description available.

Darbo tikslas – ištirti pomidorų kekerinio puvinio – (Botrytis cinerea) ir maro (Phytophthora infestans) išplitimą uždaro grunto sąlygomis. Stebėjimai buvo atliekami 2006 metais Kėdainių rajone, Žiogaičių kaime, ūkininko Aurelijaus Bieliausko ūkyje. Šiltnamio plotas 1026,6 m2 . Pomidorai- viena svarbiausių ir populiariausių šiltnamių daržovių. Pastaruoju metu daugiausia žalos padaro šios pomidorų ligos: šiltnamiuose – kekerinis puvinys; lauke ir šiltnamiuose – maras. Dėl nepalankių augalams augti sąlygų, kurios sukelia fiziologines ligas, lapai gelsta, susisuka, lapai ir viršūnės nyksta, vaisių viršus gali pradėti pūti, trūkinėti, deformuotis, ant jų paviršiaus atsiranda dėmių. Dėl įvairių priežasčių, tai drėgmės perteklius arba stygius, blogai vėdinami šiltnamiai, netinkamai tręšiami augalai, per aukšta ar per žema oro temperatūra, dideli jos svyravimai, bloga žemės aeracija, šviesos trūkumas, mechaniniai augalų sužalojimai – tai dažnos įvairių ligų plitimo priežastys. Mažėja augalų produktyvumas, nukenčia derliaus kokybė. Kai ligoms plisti sąlygos palankios, sutrumpėja vegetacija ir augalai masiškai žūsta. Pirmieji ligų požymiai pastebėti birželio mėn. 03 d. Daugiausiai augalų buvo pažeista 06 16 ir pažeidimai, įvairiu intensyvumu, siekė net 50% visų stebimų augalų. 2006 m birželio 29 dieną, buvo atliekamas pomidorų stebėjimas ir nustatyta, jog abiejų veislių kontroliniai variantai visiškai sunykę. / The purpose of research - the investigation of impact fungi (Phytophthora infestans) and (Botrytis aclada) exert on tomato under the growing conditions of closed soil. Observation was made in 2006 in Kėdainiai disrtict, village of Žiogaičiai, in farmer Aurelijus Bieliauskas farm. Size of the greenhause shed is 1026.6 square metres. Recently most dangerous tomato dieseases are: in a warm shed - (Botrytis cinerea), Outside and in the warm shed – (Botrytis aclada). Plague, in an old warm sheds, where soil hasn‘t been changed for a while: - root decay and wilt . In case of negative growing conditions, which causes physiological disease, leaves gets yellow, twists, leaves falls down from the top , decay of the top part of fruit, they cracks, deforms and spots appears. In many cases its to much or not enough rain, bad airing in a warm shed, wrong manure , to high or to low temperature, high temperature fluctuation, bad ground airing, not enough light, mechanical damage – they all are common reasons which causes plant diseases. It decreases plat productivity, looses yield quality. When conditions are good for disease spreading, vegetation gets shorter and plants dies. First signs of disease were noticed on the third of June. More plant were affected on the 16th of June and signs were various and reached over 50% researched plants. On the 29th of June 2006, was made tomato research and stated that both breed checkpoints was totally decadent.

No description available.

Many parasitic diseases display symptoms beyond the areas invaded by the parasite itself. This suggests that toxic metabolic products of the pathogen diffusing in front of its advancing growth brings about derangements in unoccupied tissues at times far remote from the focus of infection. [...]