No description available.

6 pp. / We injected AGRA PHOS (Potassium Phosphite) 0-2.4-2, Propiconizole – 0.05%, Zn, Mn and Fe 0.105, 0.112, and 0.10% respectively, Zn, Mn and Fe 0.210, 0.220, and 0.200% respectively and Propiconizole – 0.05% + Zn, Mn and Fe 0.105, 0.112, and 0.10% respectively using a low pressure injection system for the control of Antrodia sinuosa in lemon trees. No treatment led to a significant reduction in fungal growth.

The occurrence of the cotton root rot fungus, Phymatotrichum omnivorum (Shear) Duggar, in sharply defined, localized areas in certain fields led to the suggestion that there may be a specific soil chemical factor which limits the spread of the fungus. The available sodium, potassium, calcium, and magnesium contents of infested and adjacent noninfested soils in 13 fields were determined and compared. At seven sites, there were no significant differences in cation contents of infested and adjacent noninfested areas (p = 0.05). Available sodium levels were higher in infested areas at three sites, and higher in noninfested areas at three sites. Potassium and calcium levels were higher in the infested area at one site, and higher in the noninfested areas at two sites. Magnesium levels were higher in the noninfested areas at three sites. Contrary to previous reports, the fungus was found to cause severe disease in soils with available sodium contents as high as 4.2 milliequivalents per 100 g soil. Applications of sodium chloride at rates ranging from 1800 to 4000 kg/ha did not reduce disease severity or increase yield significantly in ten field trials.

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This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.

8 pp. / We injected AGRA PHOS (Potassium Phosphite) 0-2.4-2, Propaconizole – 0.05%, Propaconizole plus Azoxystrobin – 0.117 and 0.135% respectively, Zn, Mn and Fe 0.105, 0.112, and 0.10% respectively, and Azoxystrobin – 0.137% using a low pressure injection system for the control of Antrodia sinuosa in lemon trees. The Propaconizole + Azoxystrobin treatment, the Azoxystrobin treatment, and the Zn + Mn + Fe treatment led to significantly less fungal lesion growth when applied prior to the introduction of the fungus, as compared to their application after fungal introduction.

The effect of fruit removal from cantaloupe was studied under field conditions in a soil naturally infested with Monosporascus cannonballus. Fruit removal resulted in greater sugar accumulation in the cantaloupe roots compared to the roots from plants on which the fruits were allowed to develop normally. Individual, total, and combined root carbohydrate levels were greater in plants without fruit than in plants with fruit. Five major sugars (stachyose, raffinose, sucrose, glucose, and fructose) were found in the cantaloupe roots. Stachyose concentrations were higher than all the other sugars in the cantaloupe roots. Disease severity on the cantaloupe roots with fruit removed was less severe than on roots of plants with fruit, and dry weights were higher in the fruit removal treatment than those of the fruit non-removal treatment. Fruit removal results in increased root growth and carbohydrate accumulation in the cantaloupe roots. Root sugar concentrations affected infection efficiency and disease progress of Monosporascus root rot and vine decline. Therefore, the retarded development of Monosporascus root rot and vine decline is associated with a greater carbohydrate accumulation in the cantaloupe root.

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.

In the master‘s task there is examined the spurce, touched dy nucleus rot, uotspread in places of vegetation and i nage of types. The task of the object is VĮ Sakiu forest enterprise‘s deforestations. The aims of the task are: 1. the outspread regularities of spurce, touched by nucleus rot. 2. the economical losing due to tha spurce, tuoched by nucleus rot. 3. wind in-service damage in Sakiu forest deforestations. The methods of the task are: -the outspread regularities of spurce, touched by nucleus rot, to the sorts of deforestations in VI – IX centuries. The grow in Lb, Lc, Ld, Nc and Uc places of vegetation. The original informatikon is collected from 15 deforestations, and there are measured 1331 spruce,. - economical losing due to the spruce, touched by nucleus rot. The actual price of wood was counted for every deforestation. This price was compared with one, which we goti f all trees would be unbroken. Results of work- it was determined that the spread of rot depends on the age of the arboretum and the diameter of woods. The healthiest part of the arboretum consist of woods of medium diameter. As the age of arboretum increases, the demaget caused by rot also increases. Among the 70 - 80 year old arboretums there are about 27 – 39 percent of rot damaget firs. Because of this scortcoming about 35 percent of deals are rated as of the third category.Further raising of 70 year old fir forests in the lost of Lc and Ld is not useful. The variation of income... [to full text]

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