Investigations on brown rot of apricots caused by Sclerotinia fructicola (Wint.) Rehm. II. The relationship of the potassium status of apricot trees to brown rot susceptibility

1956 ◽  
Vol 7 (6) ◽  
pp. 516 ◽  
Author(s):  
GC Wade

It is shown that under Tasmanian conditions there is a negative relation between the potassium status of apricot trees and their susceptibility to brown rot. From regression equations calculated, it is suggested that trees with a potassium content of about 4.6 per cent. in oven-dry leaves would be resistant to brown rot. Difficulty was experienced in increasing the potassium content of the trees by soil or spray applications of potassium fertilizer, but when this was achieved, some reduction in brown rot incidence occurred. Regular annual soil dressings of potassium chloride at the rate of 2 lb per tree was the most satisfactory treatment tested.

1998 ◽  
Vol 83 (3) ◽  
pp. 807-818 ◽  
Author(s):  
James Houran ◽  
Carl Williams

We examined the relationship of tolerance of ambiguity to severe global factors and specific types of anomalous or paranormal experience. 107 undergraduate students completed MacDonald's 1970 AT-20 and the Anomalous Experiences Inventory of Kumar, Pekala, and Gallagher. Scores on the five subscales of the Anomalous Experiences Inventory correlated differently with tolerance of ambiguity. Global paranormal beliefs, abilities, experiences, and drug use were positively associated with tolerance of ambiguity, whereas a fear of paranormal experience showed a negative relation. The specific types of anomalous experiences that correlated with tolerance of ambiguity often involved internal or physiological experience, e.g., precognitive dreams, memories of reincarnation, visual apparitions, and vestibular alterations. We generally found no effects of age or sex. These results are consistent with the idea that some paranormal experiences are misattributions of internal experience to external (‘paranormal’) sources, a process analogous to mechanisms underpinning delusions and hallucinations.


1994 ◽  
Vol 19 (1) ◽  
pp. 49-59 ◽  
Author(s):  
Yagesh Bhambhani ◽  
Stephen Norris ◽  
Gordon Bell

This study examined the relationship of oxygen pulse (O2 pulse) to stroke volume (SV) and arterio-venous oxygen difference [[Formula: see text] diff] during submaximal cycle exercise in untrained (UG) and trained (TG) males. Fourteen volunteers in each group completed an incremental [Formula: see text] max test and a submaximal test at 60% [Formula: see text] max to determine cardiac output (Q) via CO2 rebreathing. [Formula: see text], Q, and heart rate (HR) were used to calculate SV and [Formula: see text] diff. There were no significant differences (p >.05) between the two groups for O2 pulse, SV, and [Formula: see text] diff during submaximal exercise. Stroke volume index (SVI) was significantly higher (p <.05) in the TG. O2 pulse was significantly related to SV and SVI (p <.05) but not to [Formula: see text] diff in both groups. Regression equations for predicting SV from O2 pulse for UG and TG were Y = 6.81X + 26.7, SE = 21.4, r = 0.84, and Y = 10.33X - 32.3, SE = 14.2, r = 0.71, respectively. These results suggest that O2 pulse can be used to predict SV during submaximal cycle exercise in untrained and trained men. Key words: cardiac performance, exercise, training status


1976 ◽  
Vol 16 (78) ◽  
pp. 129
Author(s):  
PN Vance

The relationship between grain yield and five plant characters in grain sorghum hybrid Pioneer 846 was studied. Grain yield was closely correlated with head weight, weight of a standard length of peduncle (WSP), peduncle perimeter (PP), head length and breadth. The close correlation of grain yield on WSP was shown to exist at a number of sites and for a number of varieties. However, regression equations differed for different sites, sowing dates and varieties. Of the two components of grain yield per head, single grain weight and grain number; only grain number was closely correlated with WSP. In one instance where moisture stress affected grain development, grain number but not yield was closely correlated with WSP. WSP was shown not to be affected by damage to the head and could therefore be used to estimate potential yield in agronomic trials where yield loss due to pest activity has occurred.


1957 ◽  
Vol 35 (1) ◽  
pp. 1-13 ◽  
Author(s):  
C. A. Miller

In a severe infestation late-instar spruce budworm larvae that normally feed on current foliage may be forced to complete development on old foliage. This results in a reduction in fecundity. The precise causes of this reduction are not known, but factors that may be involved are the amount and the age of the old foliage consumed. The relationship of pupal case size and fecundity is used as a basis for estimating the expected fecundity in a natural population under these conditions of partial larval starvation. Three regression equations applicable to conditions on the Green River area, New Brunswick, are presented. An index of the actual increase of a population is obtained from an E/F ratio. Ratios may be compared in order to indicate some aspects of oviposition. Actual and expected egg populations can also be compared, subject to certain limitations, to indicate some aspects of adult dispersal. The mean number of eggs per mass in relation to degree of infestation and a simplified method of counting eggs per mass are also discussed.


1980 ◽  
Vol 24 (1) ◽  
pp. 578-580
Author(s):  
Jefferson M. Koonce ◽  
Thomas M. McCloy

Approximately equal number of male (45) and female (43) Air Force Academy cadets learned a complex aerial maneuver (chandelle) on a desk-top flight simulator. These cadets had participated in a previous experiment (Koonce & Berry, 1980) where they were given a battery of tests which tapped several cognitive and perceptual-motor areas. Of special interest in the present study was the relationship of the various congitive factors to the rate of acquisition of the complex aerial maneuver. Prior to the introduction of the complex maneuver all subjects were trained to criterion level on four basic instrument flight maneuvers (Koonce & McCley, 1980). Then they learned how to fly the complex maneuver with the number of trials required to reach criterion performance as the dependent variable. Results indicated cognitive factors were very significant in predicting complex maneuver performance. Additionally, individually tailoring the regression equations by sex as opposed to utilizing a general overall regression equation greatly enhanced predictive capability.


2019 ◽  
Vol 10 (4) ◽  
Author(s):  
Tatyana Ogorodnikova ◽  
Aleksei Solomein ◽  
Vladimir Orlov

The article identifies the flaws of indicators for assessing the state of fixed assets in terms of reflecting the relationship between the dynamics of technical characteristics and economic indicators of operation, the associated limitations of managerial activity in the field of investments and forecasting cash flows. It indicates the problem of the deficit and surplus of the depreciation fund. It substantiates the necessity of developing an integrated indicator of the fixed assets state expressing the relationship of their technical parameters with economic indicators of operation. Based on the essence of production, it offers an indicator of a technical accelerator and discloses its essence. The article substantiates mathematical models of the technical parameters dynamics for fixed assets and the dependence of economic indicators of operation on technical parameters. It gives an economic interpretation of the elements of regression equations. It determines the range of technical accelerator values. It develops an integral indicator of the technical and economic state of fixed assets, determines its essence and relationship with the depreciation rate, identifies the criteria of correspondence of physical wear time with depreciation time of fixed assets.


2020 ◽  
Vol 25 (1) ◽  
pp. 147
Author(s):  
Sastriani .

This study discusses the non-cash payment system and inflation effects to economic growth in Indonesia from 2010 to 2019 period. The dependent variable in this study is economic growth which is calculated through GDP. While the independent variables are Debit/ATM cards, credit cards, and inflation. The method in this research is multiple linear regression analysis using the Ordinary Leasrt Square (OLS) model. Multiple linier analysis is a method to determine the relationship of several independent variables and the dependent variable. Then, to determine the directions which is a positive or negative relation. The date were processed using W-views 10 software. The results of this study indicate that credit/ATM cards are positively related and significant to economic growth. While credit cards and growth were negative and significant to economic growth.


2020 ◽  
Vol 2 (11) ◽  
pp. 153-162
Author(s):  
A. V. GORLOV ◽  
◽  
N. E. EGOROVA ◽  
E. A. KOROLEVA ◽  
◽  
...  

The article discusses the concepts of trust and corruption in society and explores the interdependence between them using the international Edelman Trust Barometer (ETB) Corruption Perceptions Index (CPI). The analysis of the topological model was carried out, on the basis of which the zones of low, medium and high levels of corruption were identified, with a characteristic specific type of relationship between the ETB and CPI indices; the general view of the dependence of the level of trust on corruption in the form of a horizontal S-shaped curve is approximately defined. Statistically significant linear regression equations were obtained, reflecting the relationship of the considered indices for three countries (Germany, Colombia, France).


Plant Disease ◽  
2005 ◽  
Vol 89 (7) ◽  
pp. 739-743 ◽  
Author(s):  
S. N. Mondal ◽  
L. W. Timmer

Greasy spot rind blotch is a serious problem in Florida for the production of grapefruit (Citrus paradisi) for the fresh market. In the 1970s to the early 1980s, the disease was described in detail and the cause was determined to be Mycosphaerella citri, the same species responsible for greasy spot of foliage. The most appropriate timing for fungicide sprays was determined at that time, but peak ascospore release has changed in recent years. In the present study, the relationship of ascospore deposition and fungal growth on fruit was determined in order to more accurately time fungicide applications. Infection of fruit appears to occur similarly to that of leaves: by deposition of ascospores and germination to produce epiphytic growth followed by penetration of the fungus through stomata. Ascospore deposition occurred mostly in May and June, but epiphytic growth began only after the onset of the summer rainy season in June in 2002 and 2003. Ascospore deposition was lower in 2002 than in 2003, but development of epiphytic growth was similar in both years. Timing of fenbuconazole sprays was evaluated in the 2001, 2002, and 2003 seasons. Of the single-spray applications, those in July were the most effective, sprays in June and August were moderately effective, and those made in May or September were ineffective. Two- and three-spray programs from June through August were usually more effective than single sprays, and four monthly sprays from May to August were needed for a high level of control. Fungicide applications are needed about every 3 to 4 weeks after the beginning of the rainy season in June through August for a high level of control of rind blotch.


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