Irrigation and fungicide application on disease occurrence and yield of early and late sown sunflower

The objective of this study was to evaluate the effect of irrigation and fungicide application on the occurrence of diseases and cypsela yield of two genotypes of sunflower. The experiments were carried out in Santa Maria-RS, during the regular season in 2007 and the late season, in 2008. Plants were sown on 04/09/2007 and 21/01/2008, in a completely randomized design, with four replicates. A 2 x 6 factorial scheme was used, with the sunflower genotypes Aguará 03 and Hélio 358 and six fungicide application schemes, which were determined by the FAST forecasting system, as follows: FAST 16, FAST 22 and FAST 28, without irrigation, FAST 16 IRR under irrigated condition, in addition to irrigated control (CONTROL IRR) and control (CONTROL). Disease progress was analyzed based on weekly observations of the severity of the symptoms. It was verified that irrigation increases sunflower cypsela yield in the regular season, provided that weather conditions are not favorable for the occurrence of alternaria and septoria leaf blights or that fungicides are applied. In the late season, under irrigated condition, fungicide application is necessary to control alternaria and septoria leaf blights.

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Fungicide application using a trailing boom in soybean fields

Engenharia Agrícola ◽

10.1590/s0100-69162013000400026 ◽

2013 ◽

Vol 33 (4) ◽

pp. 876-882 ◽

Cited By ~ 1

Author(s):

Pedro H. Weirich Neto ◽

Allison J. Fornari ◽

Fernando C. Bauer ◽

Altair Justino ◽

Luiz C. Garcia

Keyword(s):

Experimental Design ◽

Chemical Control ◽

Plant Population ◽

Aerial Application ◽

Foliar Diseases ◽

Soybean Crop ◽

Late Season ◽

Fungicide Application ◽

And Control

The objective of this study was to determine the effects in the yield of soybean crop utilizing a trailing boom sprayer for chemical control of late season diseases. The experimental design was randomized blocks with 04 treatments, which consisted of applying fungicides with a traditional sprayer, trailing boom, the traditional sprayer plus the trailing boom simultaneously and control (without fungicide aerial application) in 05 repetitions per treatment. The variables evaluated were: final plant population, pods per plant, grains per pod, weight of one thousand grains and yield. It was concluded that the control of foliar diseases with fungicides presented weight of one thousand grains and yield significantly higher than the average of plots without fungicide application. The trailing boom did not significantly affect the yield compared to the technology currently used.

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Seed-borne infestation and management of Alternaria Species in mustard seed at Chitwan district, Nepal

Journal of Agriculture and Natural Resources ◽

10.3126/janr.v3i1.27170 ◽

2020 ◽

Vol 3 (1) ◽

pp. 190-197

Author(s):

Prashant Rijal ◽

Subash Subedi ◽

Chiran Adhikari ◽

Sundarman Shrestha ◽

Jiban Shrestha

Keyword(s):

Trichoderma Harzianum ◽

Plant Protection ◽

Disease Incidence ◽

Control Agent ◽

Mustard Seed ◽

Poor Growth ◽

Randomized Design ◽

Control Disease ◽

Blotter Paper ◽

And Control

Alternaria blight in mustard cause heavy damage to the foliar parts resulting into poor growth and development of plants and thereby reduces seed yield. Inorder to manage Alternaria infestation in mustard seed for yield maximization, an experiment was conducted in the plant protection laboratory in Nepal Polytechnic Institute, Bharatpur, Chitwan in 2018, using Completely Randomized Design (CRD) with four replicates. Five treatments i.e.Uthane M-45 (2g/kg), Neem powder (3 g/kg), Bojho powder (4g/kg), Trichoderma harzianum, (107 Conidia/mL) and control (without treatment) were used for seed treatment of local variety of Mustard. Four hundred seeds for each treatment (25 seeds in each petriplate) were plated using triple layers of moistened blotter paper in petriplate and incubated at (27±20C) for 2 days and followed deep freezing for 24 hrs. Data of disease incidence and seed germination were recorded in 3, 7 and 10 days after incubation (DAI). Seedling vigor and seedling weight were also recorded at 5 DAI. The percentage of Alternaria spp incidence on seeds at different DAI showed highly significant with respect to different treatments. Application of Uthane M-45 and T. harzianum significantly reduced the seed-borne infection of Alternaria spp. as compared to control. At 3 DAI Uthane M-45 completely checked the pathogen however, only 4% and 5% disease incidence was observed in 7 DAI and 10 DAI respectively. Bio control agent Trichoderma harzianum was found next best alternative after Uthane M-45 to control disease. Plant extract Bojho powder and Neem powder were found better than control to check the disease. Furthermore, highest germination (76%) was observed in Trichoderma treatment whereas, lowest germination was found in control.

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Hydrothermal treatment in the management of anthracnose in ‘Prata-Anã’ banana produced in the semiarid region of Minas Gerais, Brazil

Revista Brasileira de Fruticultura ◽

10.1590/0100-29452018871 ◽

2018 ◽

Vol 40 (2) ◽

Author(s):

Lais Maia e Silva ◽

Regina Cássia Ferreira Ribeiro ◽

Maria Luisa Mendes Rodrigues ◽

Martielle Batista Fernandes ◽

Edson Hiydu Mizobutsi

Keyword(s):

Minas Gerais ◽

Semiarid Region ◽

Fungicide Application ◽

Progress Curve ◽

Randomized Design ◽

Dunnett Test ◽

Northern State ◽

Delayed Maturation ◽

Severity Of The Disease ◽

And Control

Abstract Anthracnose stands out among rot diseases that can occur in the post-harvest phase of banana. The aim of this study was to evaluate the thermotherapy in the control of anthracnose in ‘Prata Anã’ banana produced in northern state of Minas Gerais. Bananas ‘Prata Anã’ variety were divided into groups of three fruits and inoculated with Colletotrichum musae. Groups were submitted to thermotherapy using five temperatures (40°C, 44°C, 48°C, 52°C and 56°C) and four immersion times (4, 8, 12 and 16 minutes) and control. Treatments were repeated five times in a completely randomized design. Area under the incidence progress curve (AUIPC) and area under the severity progress curve (AUSPC) were calculated. To evaluate the thermotherapy efficiency compared to chemical control, fruits were submitted to the following treatments: thermotherapy with and without fungicide application and fruits treated with fungicide only, the control fruits without thermotherapy and without fungicide application. After fifteen days of storage, fruits were evaluated for anthracnose severity. The results of experiments were submitted to analysis of variance and regression and means were compared by the Scott-Knott test (p<0.05). Control was compared to treatments by the Dunnett test (p<0,05). The lowest anthracnose AUIPC values were observed when using temperature of 48°C for eight and 12 minutes. Thermotherapy at 52°C from eight minutes of immersion, in addition to reducing the anthracnose AUSPC in fruits up to 81.6%, delayed maturation of fruits. Fruits submitted to thermotherapy at 56°C presented higher severity of the disease and resulted in the maturation of fruits. Thermotherapy reduces anthracnose severity in fruits in a manner similar to fungicide use, but the association of both results in better control of the disease in ‘Prata Anã’ banana. Thermotherapy is an efficient technique to reduce the severity of the disease in ‘Prata Anã’ banana produced in northern state of Minas Gerais.

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Clinical, epidemiological and climatic factors related to the occurrence of cutaneous leishmaniasis in an endemic area in northeastern Brazil

Brazilian Journal of Biology ◽

10.1590/1519-6984.224937 ◽

2020 ◽

Author(s):

R. S. Oliveira ◽

K. B. A. Pimentel ◽

M. L. Moura ◽

C. F. Aragão ◽

A. S. Guimarães-e-Silva ◽

...

Keyword(s):

Cutaneous Leishmaniasis ◽

Climatic Factors ◽

Wide Distribution ◽

Northeastern Brazil ◽

Public Health Issue ◽

Air Humidity ◽

Disease Occurrence ◽

Relative Air Humidity ◽

Age Range ◽

And Control

Abstract Cutaneous leishmaniasis (CL) is a neglected tropical disease with a wide distribution in the Americas. Brazil is an endemic country and present cases in all states. This study aimed to describe the occurrence, the underlying clinical and epidemiological factors, and the correlation of climatic variables with the frequency of reported CL cases in the municipality of Caxias, state of Maranhão, Brazil. This is a retrospective and descriptive epidemiological study based on data extracted from the Brazilian Information System of Diseases Notification, from 2007 to 2017. Maximum and minimum temperature, precipitation, and relative air humidity data were provided by the Brazilian National Institute of Meteorology. A total of 201 reported autochthonous CL cases were analyzed. The predominance of cases was observed in males (70.1%). The age range between 31 and 60 years old was the most affected, with 96 cases (47.9%). Of the total number of registered cases, 38.8% of the affected individuals were engaged in agriculture-related activities. The georeferenced distribution revealed the heterogeneity of disease occurrence, with cases concentrated in the Western and Southern regions of the municipality. An association was detected between relative air humidity (monthly mean) and the number of CL cases per month (p = 0.04). CL continues to be a concerning public health issue in Caxias. In this context, there is a pressing need to strengthen measures of prevention and control of the disease through the network of health services of the municipality, considering local and regional particularities.

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Performance of Strawberry Varieties Developed for Perennial Matted-Row Production in Annual Plasticulture in a Cold Climate Region

Agronomy ◽

10.3390/agronomy11071407 ◽

2021 ◽

Vol 11 (7) ◽

pp. 1407

Author(s):

Courtney A. Weber

Keyword(s):

Large Scale ◽

Fruit Size ◽

Weather Conditions ◽

Cold Climate ◽

Annual Production ◽

High Yield ◽

Production Cycle ◽

Late Season ◽

Berry Weight ◽

High Yields

Annual plasticulture production of strawberries promises superior weed control, fruit quality and yields. However, strawberry varieties adapted for perennial, matted-row production and local markets in cold climate regions have not been widely tested for adaptation to an annual production cycle. Productivity of seven short-day varieties developed for matted-row and/or annual production was examined in an annual plasticulture system in two consecutive trials in central NY (lat. 42.87° N, long. 76.99° W) harvested in 2013 and 2014. ‘Flavorfest’ demonstrated good performance in Trial 1 with high yield (390 g/plant) and large fruit size (13.9 g mean berry weight). ‘Jewel’ was shown to be well adapted to the annual plasticulture system with consistently high yields (330 and 390 g/plant) that equaled or surpassed other varieties and had moderate fruit size. ‘Chandler’ performed similarly to previous trials conducted in warmer regions with yield (340 g/plant) and fruit size (9.8 g mean berry weight) similar to ‘Jewel’. ‘Clancy’ yielded less but was consistent from year to year. The late season varieties Seneca and Ovation showed marked variability between years, possibly due to drastically different temperatures during flowering and fruit development in Trial 1 compared to Trial 2. High temperatures in Trial 1 likely caused higher early fruit yield, a compressed season and a precipitous decline in fruit size in the later season, thus reducing yield in the late season. Survival after a second dormant period was poor resulting in a small second harvest and reduced fruit size. Overall, the system demonstrated many of the expected benefits but may be more sensitive to weather conditions in the region. While many varieties developed for matted-row production may work well in an annual plasticulture system, not all varieties are equally adapted. Performance of each variety should be determined independently before large scale adoption by growers.

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The Message of “APEC Blue” for the Prevention and Control of Urban Air Pollution in China

Chinese Journal of Urban and Environmental Studies ◽

10.1142/s2345748116500275 ◽

2016 ◽

Vol 04 (04) ◽

pp. 1650027

Author(s):

Rong ZHU

Keyword(s):

Air Pollution ◽

Emergency Response ◽

Prevention And Control ◽

Urban Air Pollution ◽

Pollution Prevention ◽

Warning System ◽

Weather Conditions ◽

Control Measures ◽

Atmospheric Pollutant ◽

And Control

Analysis of the meteorological conditions for atmospheric pollutant dispersion before and after the 2014 APEC meeting shows very significant effects of air pollution prevention and control measures on the meeting. It proves that the proper measures to control air pollution in the Beijing-Tianjin-Hebei Region are: establishing a regional emergency response mechanism to reduce emissions in the case of heavy air pollution, strengthening the local emergency response measures for emission reduction, and enhancing the early warning system for weather conditions conducive to heavy air pollution.

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SOME OBSERVATIONS ON THE USE OF FEED ADDITIVES IN CANADIAN ANIMAL PRODUCTION

Canadian Journal of Animal Science ◽

10.4141/cjas79-041 ◽

1979 ◽

Vol 59 (2) ◽

pp. 333-337

Author(s):

T. F. SHARBY

Keyword(s):

Veterinary Medicine ◽

Feed Efficiency ◽

Antibiotic Use ◽

Feed Additives ◽

Health Hazards ◽

Potential Health ◽

Animal Agriculture ◽

Animal Feeds ◽

Control Disease ◽

And Control

Antibiotics have been used in animal feeds for almost 30 yr to improve growth, enhance feed efficiency, and control disease in birds and animals. In 1974 antibiotics used in animal feeds in Canada totalled 13.31 million dollars while those used in veterinary medicine totalled 28.8 million dollars. Antibiotics, sulfonamides and antibacterials used in human application that same year equalled 77.4 million dollars. Concerns regarding potential health hazards to humans with continued low-level antibiotic supplementation of animal feeds have resulted in a number of countries implementing or proposing more rigid legislation covering antibiotic use in animal agriculture. Possible consequences of such legislation being introduced in Canada are discussed.

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Effect of Ethephon and Packaging Practices On Ripening of Mango cv. Maldah

SAARC Journal of Agriculture ◽

10.3329/sja.v19i1.54786 ◽

2021 ◽

Vol 19 (1) ◽

pp. 155-163

Author(s):

S Sapkota ◽

D Kc ◽

H Giri ◽

M Saud ◽

M Basnet ◽

...

Keyword(s):

Chemical Properties ◽

Control Treatment ◽

Quality Performance ◽

Plastic Packaging ◽

Randomized Design ◽

Acid Ratio ◽

Ethephon Treatment ◽

Completely Randomized Design ◽

And Control ◽

Juice Content

The present research was conducted on two factor Completely Randomized Design (CRD) with eight treatments and three replications. A set of experiments were carried out to evaluate the effect of postharvest ethephon treatment and packaging on ripening of mango cv. Maldah. The treatments consisted of ripening agent i.e., ethephon and control treatment under different packaging condition i.e., fiber with hole, fiber without hole, plastic with hole and plastic without hole. The result revealed that different packaging condition and ripening agents influenced the ripening behavior of mango. The highest TSS (15.26), sugar-acid ratio (23.66) and juice content (126.05) were recorded with fiber (without hole) and the lowest TSS (12.60), sugar-acid ratio (9.01) and juice content (116.05) with plastic (without hole). The highest TA (1.44) was recorded with plastic (without hole) and the lowest (0.66) with fiber (without hole). Similarly, the highest BT (2.83) was recorded with fiber (with hole) and the lowest (1.66) with plastic (without hole). Firmness, sweetness, TSS and juice content were the highest with the interaction effect of fiber bag (without hole) and ethephon treatment. In conclusion, mango fruits with ethephon treatment packed in fiber bag (without hole) enhances quality and ripening of mango whereas under controlled condition and without hole plastic packaging mangoes had low quality performance in terms of physio-chemical properties. SAARC J. Agric., 19(1): 155-163 (2021)

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PSXIV-14 Supplementation of high-grain diet with red osier dogwood affects in vitro digestibility and fermentation characteristics

Journal of Animal Science ◽

10.1093/jas/skab235.840 ◽

2021 ◽

Vol 99 (Supplement_3) ◽

pp. 477-477

Author(s):

Wenzhu Yang

Keyword(s):

Control Diet ◽

Antimicrobial Properties ◽

Positive Control ◽

Gas Production ◽

In Vitro Digestibility ◽

Randomized Design ◽

Rumen Acidosis ◽

Barley Silage ◽

And Control

Abstract Red osier dogwood (ROD) is a native shrub plant rich in phenolic compounds with antimicrobial properties. The objective of this study was to evaluate the effects of substituting barley silage with either raw ROD or ROD extract (RODE) in high-grain (HG) diet under a low media pH (5.8) on gas production (GP), dry matter (DM) disappearance (DMD) and fermentation characteristics in batch cultures. The study was a completely randomized design with 4 treatments: 1) control diet (10% barley silage and 90% barley concentrate, DM basis), control diet supplemented with 2) monensin (30 mg/kg diet DM; positive control), 3) substitution of 3% ROD or 4) 3% RODE for an equal portion of silage. Inoculum was obtained from 2 ruminally fistulated beef heifers offered the HG diet. Substrate ground (1 mm) was incubated for 24 h and the experiment repeated twice. The GP did not differ among treatments (147 ml/g DM), but the DMD differed (P < 0.02) at highest for control (69.4%), lowest for ROD (58.4%) and intermediate for other treatments (64.1%). Total volatile fatty acid (VFA) concentration (mM) tended (P< 0.08) to be lower with ROD (80.5) and monensin (80.1) than control (83.9). Acetate proportion was greater (P = 0.02) with ROD (46.2%) and RODE (46.9%) than control (42.4%) and monensin (42.3%). However, the propionate proportion was greater (P = 0.05) with monensin (32.1%) than other treatments (averaged 30.1%). Consequently, acetate to propionate ratio (A:P) of ROD (1.52) and RODE (1.56) was higher than monensin (1.32; P < 0.01) and control (1.44; P < 0.08). Differences in variables measured between ROD and RODE were minimal. These results indicated that the decreased DMD along with increased A:P with addition of ROD or RODE suggests that both ROD and RODE may be beneficial to HG fed cattle for reducing risk of rumen acidosis without negatively impacting fibre digestion.

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Nutrition Education Among Low-Income Older Adults: A Randomized Intervention Trial in Congregate Nutrition Sites

Health Education & Behavior ◽

10.1177/1090198105276212 ◽

2006 ◽

Vol 33 (3) ◽

pp. 374-392 ◽

Cited By ~ 12

Author(s):

Roger E. Mitchell ◽

Sarah L. Ash ◽

Jacquelyn W. McClelland

Keyword(s):

Older Adults ◽

Nutrition Education ◽

Hierarchical Linear Modeling ◽

Low Income ◽

Limited Resource ◽

Well Being ◽

Linear Modeling ◽

Randomized Design ◽

Randomized Intervention ◽

And Control

Nutritional well-being among older adults is critical for maintaining health, increasing longevity, and decreasingthe impactofchronicillness. However, few well-controlledstudies have examinednutritionalbehav ior change among low-income older adults. A prospective, controlled, randomized design examined a fivesession nutrition education module delivered to limited-resource older adults ( N = 703) in Congregate Nutrition sites by Cooperative Extensionagents. Experimentalgroupparticipantswere significantly more likely than con trol groupparticipants to increase multivitamin use, to increase calcium supplementuse, to read labels of dietary supplements, to carry a supplement and/or medication list, and to discuss such use with their health care profes sional. The study addresses weaknesses in the literature by using a theoretically derived education component, implementing the intervention within a setting regularly used by low-income older adults, employing random ized assignment to intervention and control conditions, and using hierarchical linear modeling to deal with “nested” data.

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