Effects of intermittent acidic irrigations on soybean yields and frogeye leaf spot

Walker, J. T.; Phillips, D. V.; Melin, J. B.; Spradlin, D.

doi:10.1016/0098-8472(94)90052-3

Cited by 8 publications

(4 citation statements)

References 18 publications

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“…In general, RO can effectively remove ionic substances but not gases. When HCO 3 − and CO 3 2− are removed, the additional CO 2 reduces the pH level [50]. The average values for the pH of the WRRF effluent, the RO feed, and the RO permeate are shown in Figure 12.…”

Section: Discussionmentioning

confidence: 99%

Improving the Performance of the Reverse Osmosis Process with Fiber Filter and Ultrafiltration: Promoting Municipal Sewage Reclamation and Reuse for Industrial Processes

Chan

2022

Sustainability

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Wastewater reuse presents a promising solution to the growing need for the sustainable use of available water resources. The reclamation of municipal sewage through reverse osmosis can be applied for diverse uses to alleviate chronic water scarcity. In this study, a pilot plant was fabricated to measure the efficiency and the costs that are associated with pretreatment by the fiber filtration and ultrafiltration of secondary effluent from a water resource recovery facility in Taiwan. The results of this dual-membrane process meet the quantity and quality standards for industrial reuse. The pretreatment produced feedwater with a silt density index (SDI15) lower than 4.1, and with average turbidity removal rates of 42.7% (fiber filtration) and 99.2% (ultrafiltration). Following reverse osmosis, a 97.9% rejection of the electrolyte conductivity was achieved in the reclaimed water. The fouling of the membranes was controlled through the application of intensive backwash, chemically enhanced backflushing, and cleaning in place. The proposed system improves the feasibility, reliability, and economy of the dual-membrane process as a tertiary treatment for safe water reuse, and it thereby demonstrates that this technology has reached maturity for the full-scale implementation of sustainable water reuse.

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Section: Discussionmentioning

confidence: 99%

Improving the Performance of the Reverse Osmosis Process with Fiber Filter and Ultrafiltration: Promoting Municipal Sewage Reclamation and Reuse for Industrial Processes

Chan

2022

Sustainability

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“…The pathogen overwinters in infested crop residue which remains on the soil surface and infected seed . It was previously thought that C. sojina was incapable of surviving the cold winters of the north-central United States (Walker et al, 1994).…”

Section: Frogeye Leaf Spotmentioning

confidence: 99%

Estimation of soybean radiation use efficiency with the help of UAV imagery to evaluate the impact of frogeye leaf spot on yield and the effect of fungicides.

Phillips¹

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“…The preferred conditions for the perpetuation of the C. sojina pathogen may explain why FLS has largely been a problem in the southern U.S. Walker et al 1994). C. sojina thrives well when temperatures are between 75-and 80-degrees Fahrenheit with relative humidity of 90% or higher (Cruz and Dorrance 2009;.…”

Section: First Epidemicsmentioning

confidence: 99%

“…The lack of hardiness to survive the northern winter temperatures is an additional factor to why FLS is predominantly found in the southern states Walker et al 1994). As climatic conditions have changed, FLS severity has been increasing in the Midwest and other northern states.…”

Section: First Epidemicsmentioning

confidence: 99%

Assessing Missouri soybean fields for azoxystrobin resistant cercospora sojina

MacGregor¹

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Successful management of Cercospora sojina, the causal agent of frogeye leaf spot, can be achieved through utilizing resistant varieties and fungicide applications. Fungicides in the quinone outside inhibitor (QoI) class are most effective in controlling C. sojina in the field. Unfortunately, azoxystrobin fungicide-resistant isolates of C. sojina have been recovered in many soybean growing areas of the U.S. Fungicide-resistant isolates of C. sojina were first detected in 2011 and 2012 in two counties in southeast Missouri, but no further assessment was conducted. In this study, 121 isolates were collected from 15 surveyed counties between 2019 and 2020 in an effort to understand the geographical distribution of fungicide-resistant C. sojina. Isolates were collected from fields based on the presence of frogeye leaf spot symptoms. Samples were brought to the laboratory and isolates were recovered from individual lesions. A fungicide sensitivity bioassay was conducted to determine which isolates were resistant to the QoI class of fungicides. The fungicide sensitivity bioassay consisted of full-strength PDA amended with technical grade azoxystrobin at five different concentrations and a no fungicide control. Out of 121 isolates, 81 were fungicide-resistant representing 13 of the 15 Missouri counties included in the survey. Notably, the northwest corner of Missouri had the highest concentration of fungicide-resistant isolates, consistent with the recent recovery of fungicide-resistant C. sojina isolates in Iowa and Nebraska. The widespread recovery of fungicide-resistant C. sojina in multiple counties throughout Missouri provides new insight into disease management in the state.

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Effects of intermittent acidic irrigations on soybean yields and frogeye leaf spot

Cited by 8 publications

References 18 publications

Improving the Performance of the Reverse Osmosis Process with Fiber Filter and Ultrafiltration: Promoting Municipal Sewage Reclamation and Reuse for Industrial Processes

Improving the Performance of the Reverse Osmosis Process with Fiber Filter and Ultrafiltration: Promoting Municipal Sewage Reclamation and Reuse for Industrial Processes

Estimation of soybean radiation use efficiency with the help of UAV imagery to evaluate the impact of frogeye leaf spot on yield and the effect of fungicides.

Assessing Missouri soybean fields for azoxystrobin resistant cercospora sojina

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