scholarly journals Age-specific survival rate and fecundity of adult Monochamus carolinensis (Coleoptera: Cerambycidae) under field conditions

2009 ◽  
Vol 44 (2) ◽  
pp. 249-256 ◽  
Author(s):  
Katsumi Togashi ◽  
James E. Appleby ◽  
Hassan Oloumi-Sadeghi ◽  
Richard B. Malek
Keyword(s):  
Survival Rate ◽  
Field Conditions

scholarly journals IV. Effect of 60Co gamma rays on survival rate of China aster plants (Callistephus chinensis Nees) in M1 generations - under field conditions

2013 ◽  
Vol 35 (2) ◽  
pp. 277-283
Author(s):  
A. Wosińska
Keyword(s):  
Survival Rate ◽  
Gamma Radiation ◽  
Gamma Rays ◽  
Lethal Effect ◽  
Field Conditions ◽  
Considerable Decrease ◽  
Planting Time ◽  
Variety Effect ◽  
China Aster ◽  
Different Doses

Studies were undertaken on the effect of different doses of gamma radiation on survival rate of plants (germinated from irradiated seeds) for 5 China aster varieties specified at florescence time. During their growth under field conditions (from planting time to blooming) lethal effect of the radiation occurred in plants of all varieties and its level depended on dose and variety. Effect of 3 kR and 6 kR doses differed depending on variety and was not always harmful, but following irradiation with doses exceeding 6 kR a considerable decrease in survival rate was observed. Radioresistance of studied varieties - measured both: by LD<sub>50</sub> and LD<sub>l00</sub> - differed; depending on variety, LD<sub>50 </sub>and LD<sub>l00</sub> values fluctuated: from 6 to 9 kR and 12 to 15 kR respectively.

LOCAL DISPERSAL OF MALE SPRUCE BUDWORM (LEPIDOPTERA: TORTRICIDAE) MOTHS DETERMINED BY MARK, RELEASE, AND RECAPTURE

1983 ◽  
Vol 115 (9) ◽  
pp. 1065-1070 ◽  
Author(s):  
C. J. Sanders
Keyword(s):  
Survival Rate ◽  
Choristoneura Fumiferana ◽  
Spruce Budworm ◽  
Field Conditions ◽  
Daily Survival Rate ◽  
Release Point ◽  
Daily Survival ◽  
Baited Traps ◽  
Local Dispersal

AbstractLocal dispersal and survival of male spruce budworm, Choristoneura fumiferana (Clem.), moths under field conditions was determined by mark, release, and recapture in pheromone-baited traps. Recapture rates and distance of recapture were dependent upon height of traps and proximity of traps to the release point, but over 65% of those recaptured were caught within 50 m. With traps 20 m apart, 30% of the recaptures were in traps farthest from the release point (50–70 m), a fact which suggests that male spruce budworm may disperse beyond this distance at low densities. Males were recaptured up to 7 days after release, and had a daily survival rate averaging 67%.

scholarly journals Effect of Benzoylphenyl Ureas on Survival and Reproduction of the Lace Bug, Leptopharsa gibbicarina

Insects ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 34
Author(s):  
Luis Carlos Martínez ◽  
Angelica Plata-Rueda ◽  
José Eduardo Serrão
Keyword(s):  
Survival Rate ◽  
Oil Palm ◽  
Adult Emergence ◽  
Field Conditions ◽  
Lace Bug ◽  
Highly Effective ◽  
Potential Applications ◽  
Survival And Reproduction ◽  
Benzoylphenyl Ureas ◽  
Sublethal Concentrations

The lace bug, Leptopharsa gibbicarina is a vector of Pestalotiopsis fungal complex in oil palm crops in the Americas. The effects of four benzoylphenyl ureas (BPUs) (lufenuron, novaluron, teflubenzuron, and triflumuron) were evaluated against L. gibbicarina for toxicity, survival, reproduction, and mortality in semi-field conditions. Concentration-mortality bioassays demonstrated that novaluron (LC50 = 0.33 ppm), teflubenzuron (LC50 = 0.24 ppm), lufenuron (LC50 = 0.17 ppm), and triflumuron (LC50 = 0.42 ppm) are toxic to L. gibbicarina nymphs. The survival rate was 99% in control nymphs, decreasing to 50% in nymphs exposed to LC50 of triflumuron, 47% in nymphs treated with lufenuron, 43% in nymphs treated with teflubenzuron, and 43% in those treated with novaluron. Sublethal concentrations of BPUs showed detrimental effects on the adult emergence, longevity, fecundity, and fertility of this insect. The mortality of nymphs caused by these insecticides was similar in both laboratory and semi-field conditions. Our results suggest that novaluron, teflubenzuron, and triflumuron are highly effective against L. gibbicarina, and therefore, have potential applications for this oil palm pest.

scholarly journals Growth and Survival of `Whitespire' Japanese Birch Grafted on Rootstocks of Five Species of Birch

HortScience ◽  
1995 ◽  
Vol 30 (3) ◽  
pp. 521-522 ◽  
Author(s):  
Thomas G. Ranney ◽  
Everett P. Whitman
Keyword(s):  
Survival Rate ◽  
Survival Rates ◽  
The Other ◽  
Field Conditions ◽  
Betula Platyphylla ◽  
Growth And Survival ◽  
Paper Birch ◽  
Graft Incompatibility

A 3-year study was conducted to evaluate growth and survival of trees grafted onto five species of birch rootstocks. `Whitespire' Japanese birch (Betula platyphylla var. japonica Hara.) was grafted onto paper birch (B. papyrifera Marsh), European birch (B. pendula Roth), river birch (B. nigra L.), Szechuan birch [B. szechuanica (C. Schneid.) Janson], and `Whitespire' Japanese birch rootstocks and grown under field conditions. Trees grafted onto river, European, paper, and `Whitespire' birch rootstocks had similar (100% to 60%) survival rates. Trees on Szechuan rootstock had a survival rate of 30%, which was lower than that of all other rootstocks, except `Whitespire'. `Whitespire' scions grafted onto European birch rootstocks had thicker trunks, were higher, and had wider canopies than trees grafted onto `Whitespire' rootstocks. Trees on river birch rootstocks also had thicker trunks but similar tree heights and canopy widths as trees grafted onto `Whitespire'. `Whitespire' Japanese birch rootstocks produced more rootstock suckers than any of the other rootstocks, while trees on river birch rootstocks had the most frost cracks. No signs of graft incompatibility were observed for any of the graft combinations. These results demonstrate that growth of `Whitespire' birch can be enhanced by grafting this cultivar on rootstocks of other species, including European and river birch.

scholarly journals Влияние биопрепаратов на приживаемость и продуктивность растений in vitro

2020 ◽  
Author(s):  
А. Скорейко ◽  
◽  
Татьяна Андрийчук ◽  
Р. Билык ◽  
◽  
...  
Keyword(s):  
Survival Rate ◽  
Plant Material ◽  
Field Conditions ◽  
Biological Products ◽  
Potato Plants ◽  
Potato Seedlings

The results of studies of the influence of biologicals on the process of adaptation of microclonal potato plants to in vivo conditions in greenhouse and field conditions are presented. Treatment of plant material with biological products Planriz and PhytoDoctor promotes the adaptation of in vitro potato plants to in vivo conditions, increases the survival rate of up to 97,8% of potato seedlings and increases the yield of mini-tubers.

790: Ten-Year Disease Free Survival Rate Calculated with PSA Cutpoint 0.2 NG/ML in Men After Brachytherapy for T1C Prostate Cancer

2004 ◽  
Vol 171 (4S) ◽  
pp. 209-209
Author(s):  
James B. Benton ◽  
Frank A. Critz ◽  
W. Hamilton Williams ◽  
Clinton T. Holladay ◽  
Philip D. Shrake
Keyword(s):  
Prostate Cancer ◽  
Survival Rate ◽  
Disease Free Survival ◽  
Free Survival ◽  
Disease Free Survival Rate ◽  
Disease Free

Gender differences in abdominal aortic aneurysm therapy – a systematic review

VASA ◽  
2018 ◽  
Vol 47 (4) ◽  
pp. 267-272 ◽  
Author(s):  
Konstanze Stoberock ◽  
Tilo Kölbel ◽  
Gülsen Atlihan ◽  
Eike Sebastian Debus ◽  
Nikolaos Tsilimparis ◽  
...  
Keyword(s):  
Gender Differences ◽  
Abdominal Aortic Aneurysm ◽  
Survival Rate ◽  
Aortic Aneurysm ◽  
Endovascular Treatment ◽  
Aortic Aneurysms ◽  
Lower Survival Rate ◽  
Lower Survival ◽  
Abdominal Aortic ◽  
Risk Of Rupture

Abstract. This article analyses if and to what extent gender differences exist in abdominal aortic aneurysm (AAA) therapy. For this purpose Medline (PubMed) was searched from January 1999 to January 2018. Keywords were: “abdominal aortic aneurysm”, “gender”, “prevalence”, “EVAR”, and “open surgery of abdominal aortic aneurysm”. Regardless of open or endovascular treatment of abdominal aortic aneurysms, women have a higher rate of complications and longer hospitalizations compared to men. The majority of studies showed that women have a lower survival rate for surgical and endovascular treatment of abdominal aneurysms after both elective and emergency interventions. Women receive less surgical/interventional and protective medical treatment. Women seem to have a higher risk of rupture, a lower survival rate in AAA, and a higher rate of complications, regardless of endovascular or open treatment. The gender differences may be due to a higher age of women at diagnosis and therapy associated with higher comorbidity, but also because of genetic, hormonal, anatomical, biological, and socio-cultural differences. Strategies for treatment in female patients must be further defined to optimize outcome.

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