Effect of Manure Application Timing on Potato Yield, Quality, and Disease Incidence

2012 ◽  
Vol 89 (5) ◽  
pp. 363-373 ◽  
Author(s):  
Meghan A. Curless ◽  
Keith A. Kelling ◽  
Phillip E. Speth ◽  
Walter R. Stevenson ◽  
R. Vaughan James
Keyword(s):  
Disease Incidence ◽  
Potato Yield ◽  
Manure Application ◽  
Application Timing ◽  
Yield Quality

scholarly journals Evaluation of prophylactic fungicide application timing on soybean (glycine max) grain yield, quality, and economic return in Mississippi

cftm ◽  
2021 ◽  
Author(s):  
Chase Alan Floyd ◽  
J Trent Irby ◽  
Tom W. Allen ◽  
Angus L. Catchot ◽  
Darrin M. Dodds ◽  
...  
Keyword(s):  
Glycine Max ◽  
Grain Yield ◽  
Economic Return ◽  
Application Timing ◽  
Fungicide Application ◽  
Yield Quality

scholarly journals Influence of Trifloxystrobin on Primary Inoculum and Progression of Scab Epidemics on Stone Fruit

Plant Disease ◽  
2015 ◽  
Vol 99 (4) ◽  
pp. 467-473 ◽  
Author(s):  
N. Lalancette ◽  
K. A. McFarland ◽  
A. L. Burnett
Keyword(s):  
Environmental Conditions ◽  
Disease Incidence ◽  
Early Summer ◽  
Annual Rate ◽  
Treatment Programs ◽  
Qoi Fungicides ◽  
Application Timing ◽  
Rate Of Increase ◽  
Scab Control ◽  
Fruit Disease

The ability of the QoI fungicide trifloxystrobin to reduce production of conidia by Fusicladium carpophilum on twig lesions was quantitatively assessed over a 3-year period from 2005 through 2007. Four annual treatment programs, consisting of two consecutive trifloxystrobin applications at pink + bloom, bloom + petal fall, and petal fall + shuck-split, plus a single application timing at petal fall, were examined in a ‘Redgold’ nectarine orchard harboring high levels of overwintering scab lesions. Sporulation potential, the ability of twig lesions to produce conidia under optimum environmental conditions, was subsequently assessed five to six times during each spring and early summer. In each year of the study, all four treatments significantly reduced the area under the sporulation curve or peak sporulation. The petal fall + shuck-split program provided the greatest antisporulant activity, reducing conidia production at peak sporulation by 82 to 92%. Furthermore, examination of results over the 3-year period showed that the programs significantly slowed the annual rate of increase in peak sporulation; however, none of the programs completely halted or caused a decline in the annual rate. Although no fungicide was applied after the treatment programs, results from fruit disease assessments showed that these programs, applied as much as 3 months earlier, significantly reduced disease incidence and, in particular, disease severity. A comparison of four QoI fungicides in 2008 indicated that trifloxystrobin and azoxystrobin provided the most control of fruit scab, while pyraclostrobin + boscalid and fluoxastrobin yielded minimal or no benefit. Results of this study demonstrate that certain QoI fungicides, in particular trifloxystrobin and azoxystrobin, can probably improve the efficacy of current protectant programs used for peach scab control by providing season-long control of F. carpophilum sporulation on twig lesions. Such program enhancement may be critical when orchards have high inoculum levels and/or environmental conditions are very favorable to disease development.

Plant disease detection by hyperspectral imaging: from the lab to the field

2017 ◽  
Vol 8 (2) ◽  
pp. 238-243 ◽  
Author(s):  
A-K. Mahlein ◽  
M. T. Kuska ◽  
S. Thomas ◽  
D. Bohnenkamp ◽  
E. Alisaac ◽  
...  
Keyword(s):  
Hyperspectral Imaging ◽  
Crop Production ◽  
Disease Incidence ◽  
Resistance Mechanism ◽  
Accurate Estimate ◽  
Plant Diseases ◽  
Negative Effects ◽  
Detection And Identification ◽  
Measuring Scale ◽  
Yield Quality

The detection and identification of plant diseases is a fundamental task in sustainable crop production. An accurate estimate of disease incidence, disease severity and negative effects on yield quality and quantity is important for precision crop production, horticulture, plant breeding or fungicide screening as well as in basic and applied plant research. Particularly hyperspectral imaging of diseased plants offers insight into processes during pathogenesis. By hyperspectral imaging and subsequent data analysis routines, it was possible to realize an early detection, identification and quantification of different relevant plant diseases. Depending on the measuring scale, even subtle processes of defence and resistance mechanism of plants could be evaluated. Within this scope, recent results from studies in barley, wheat and sugar beet and their relevant foliar diseases will be presented.

Impact of Bio- and Organic Fertilizers on Potato Yield, Quality and Tuber Weight Loss After Harvest

2014 ◽  
Vol 58 (1) ◽  
pp. 67-81 ◽  
Author(s):  
Sayed F. El-Sayed ◽  
Hassan A. Hassan ◽  
Mohamed M. El-Mogy
Keyword(s):  
Weight Loss ◽  
Potato Yield ◽  
Organic Fertilizers ◽  
Tuber Weight ◽  
Yield Quality ◽  
Tuber Weight Loss

Responses of photosynthetic rates and yield/quality of main crops to irrigation and manure application in the black soil area of Northeast China

2004 ◽  
Vol 261 (1/2) ◽  
pp. 55-60 ◽  
Author(s):  
Xiaobing Liu ◽  
S.J. Herbert ◽  
Jian Jin ◽  
Qiuying Zhang ◽  
Guanghua Wang
Keyword(s):  
Northeast China ◽  
Black Soil ◽  
Manure Application ◽  
Photosynthetic Rates ◽  
Yield Quality ◽  
Soil Area

Effects of surface manure application timing on ammonia volatilization

2001 ◽  
Vol 81 (4) ◽  
pp. 525-533 ◽  
Author(s):  
R. Gordon ◽  
R. Jamieson ◽  
V. Rodd ◽  
G. Patterson ◽  
T. Harz
Keyword(s):  
Ammonia Volatilization ◽  
Meteorological Parameters ◽  
Vapour Pressure Deficit ◽  
Weather Conditions ◽  
Field Trials ◽  
Dairy Manure ◽  
Manure Application ◽  
Application Timing ◽  
Total Percentage ◽  
Linear Correlations

The purpose of this study was to evaluate the influence of timing of application on ammonia (NH3) volatilization from surface-applied dairy manure. Field trials were conducted over a 2-yr period (1994 and 1995) at the Agriculture and Agri-Food Canada Research Farm in Nappan, Nova Scotia. A total of eight trials were performed in an attempt to characterize what effect the timing of application (morning vs. late afternoon/early evening) has on NH3 volatilization losses. Ammonia losses were also related to several meteorological parameters. The total percentage of NH3 volatilized in the 10 h following field spreading ranged from as low as < 2% to approximately 66%. Late-day spreading typically resulted in at least a 30% reduction in overall NH3 flux densities, primarily due to substantial reductions in NH3 losses occurring within the first 10 h after manure application. The positive benefits of late-day manure spreading were more pronounced during warm, dry weather conditions. Significant (P < 0.05) positive linear correlations were observed between NH3 volatilization in the 10 h following spreading and solar radiation (r2 = 0.56), wind speed (r2 = 0.53), temperature (r2 = 0.34) and vapour pressure deficit (r2 = 0.53). Results from this study have indicated that late day manure spreading practices can substantially reduce NH3 volatilization. Key words: Slurry, ammonia volatilization, dairy, manure application, timing

Corn Residue Level and Manure Application Timing Effects on Phosphorus Losses in Runoff

2005 ◽  
Vol 34 (5) ◽  
pp. 1620-1631 ◽  
Author(s):  
Joseph D. Grande ◽  
K. G. Karthikeyan ◽  
Paul S. Miller ◽  
J. Mark Powell
Keyword(s):  
Residue Level ◽  
Manure Application ◽  
Application Timing ◽  
Corn Residue ◽  
Timing Effects ◽  
Phosphorus Losses
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