Alternative products to control late season diseases in soybeans

ABSTRACT: In the last crop seasons, the complex of late season diseases (CLSD) of soybean (Glycine max L. (Merrill)), has been causing considerable reductions in the crop yield. Currently, there are no cultivars resistant to all pathogens that causes CLSD. The present study evaluated the effect of applying the acibenzolar-S-methyl resistance inducer, alternative products and fungicide on the severity of CLSD in the soybean cultivar BMX Potência RR during the 2013/2014 and 2014/2015 crops, in the field. The treatments for the experiments were: 1 - control (water); 2 - acibenzolar-S-methyl; 3 - calcium; 4 - micronutrients: copper, manganese and zinc; 5 - micronutrients: manganese, zinc and molybdenum; 6 - nitrogen-potassium fertilizer; 7 - Ascophyllum nodosum and 8 - azoxystrobin + cyproconazole with the addition of the adjuvant. Four applications of alternative products and two of fungicide were carried out in both harvests. A diagrammatic scale assessed the severity of CLSD at the phenological stage R7.1. The acibenzolar-S-methyl resistance inducer, alternative products (macro and micronutrients) and A. nodosum had no effect on the severity of CLSD in the two harvests. The fungicide (azoxystrobin + cyproconazole) reduced the severity of CLSD and prevented damage to productivity in both experiments.

Download Full-text

Alternative Products to Control Soybean Downy Mildew in the Field

Journal of Agricultural Science ◽

10.5539/jas.v12n8p160 ◽

2020 ◽

Vol 12 (8) ◽

pp. 160

Author(s):

Gislaine Gabardo ◽

Maristella Dalla Pria ◽

Henrique Luis da Silva ◽

Mônica Gabrielle Harms

Keyword(s):

Downy Mildew ◽

Disease Severity ◽

Field Experiments ◽

Ascophyllum Nodosum ◽

Phenological Stages ◽

Manganese Zinc ◽

Growing Seasons ◽

Progress Curve ◽

Copper Manganese ◽

Diagrammatic Scale

Soybean mildew caused by Oomycota Peronospora manshurica, is a disease widely spread in Brazil. In order to study the efficiency of soybean mildew control due to the application of alternative products and fungicide in the field, experiments were conducted in Ponta Grossa, PR, Brazil, during the 2013/2014 and 2014/2015 growing seasons. The design used was randomized blocks with four replications. The treatments were: 1-witness; 2-acibenzolar-S-methyl; 3-calcium; 4-micronutrients: copper, manganese and zinc; 5-micronutrients: manganese, zinc and molybdenum; 6-NK fertilizer; 7-Ascophyllum nodosum and 8-azoxystrobin + cyproconazole with the addition of Nimbus adjuvant. Four applications of alternative products (phenological stages V3, V6, R1 and R5.1) and two of fungicide (phenological stages R1 and R5.1) were performed. The mildew severity was estimated using a diagrammatic scale. The severity data made it possible to calculate the area under the disease progress curve (AUDPC). In the 2014/2015 harvest the disease was more severe. The control of downy mildew by the use of fungicide did not reduce the epidemic. The fungicide was not efficient in the two evaluated seasons. All tested alternative products reduced the disease severity and AUDPC in both seasons. The best results in reducing downy mildew were found with the application of acibenzolar-S-methyl, micronutrients (Cu, Mn, Zn) and A. nodosum.

Download Full-text

Alternative products to control powdery mildew in soybeans culture in field

Bioscience Journal ◽

10.14393/bj-v37n0a2021-53681 ◽

2021 ◽

Vol 37 ◽

pp. e37052

Author(s):

Gislaine Gabardo ◽

Maristella Dalla Pria ◽

Henrique Luis da Silva ◽

Mônica Gabrielle Harms

Keyword(s):

Glycine Max ◽

Powdery Mildew ◽

Ascophyllum Nodosum ◽

Phenological Stages ◽

Fungicide Treatment ◽

Manganese Zinc ◽

Growing Seasons ◽

Progress Curve ◽

Copper Manganese ◽

Glycine Max L

The occurrence of powdery mildew (Microsphaera diffusa) in soybean (Glycine max L.) has increased in the last harvests. In order to study the efficiency of powdery mildew control due to the application of alternative products and conventional fungicide, trials were conducted in Ponta Grossa, PR, Brazil, during the 2013/2014 and 2014/2015 growing seasons. The design used was randomized blocks with four replications. The treatments for the experiments were: 1 - control; 2 - acibenzolar-S-methyl (Bion 500 WG®); 3 - calcium (Max Fruit®); 4 - Micronutrients: copper, manganese and zinc (Wert Plus®); 5 - Micronutrients: manganese, zinc and molybdenum (V6®); 6 - NK fertilizer (Hight Roots®); 7 - Ascophyllum nodosum (Acadian®) and 8 - fungicide (azoxystrobin + cyproconazole) (Priori XTRA®) with the addition of the adjuvant. Four applications of alternative products (phenological stages V3, V6, R1 and R5.1) and two of fungicide (phenological stages R1 and R5.1) were carried out. The parameters evaluated were powdery mildew severity and productivity. The severity data made it possible to calculate the area under the disease progress curve (AUDPG). Alternative products didn’t reduce powdery mildew in the two harvests. The conventional fungicide treatment was the only one that controlled powdery mildew and didn’t reduce the productivity in both experiments.

Download Full-text

Effect of Potassium Fertilizer and Lime Application on Yield and Quality of Soybean (Glycine max L. (merrill) in Acidic Soil of Gobu Sayo District, Western Oromia, Ethiopia

10.7176/fsqm/90-01 ◽

2019 ◽

Keyword(s):

Glycine Max ◽

Acidic Soil ◽

Potassium Fertilizer ◽

Yield And Quality ◽

Glycine Max L ◽

Lime Application

Download Full-text

Determination of iron, copper, manganese, zinc, lead, and cadmium in mushroom samples from Tokat, Turkey

Food Chemistry ◽

10.1016/s0308-8146(03)00245-0 ◽

2004 ◽

Vol 84 (3) ◽

pp. 389-392 ◽

Cited By ~ 72

Author(s):

Ibrahim Turkekul ◽

Mahfuz Elmastas ◽

Mustafa Tüzen

Keyword(s):

Manganese Zinc ◽

Lead And Cadmium ◽

Iron Copper ◽

Copper Manganese

Download Full-text

Evaluation of mineral and heavy metal contents in Croatian blackberry wines

Czech Journal of Food Sciences ◽

10.17221/132/2009-cjfs ◽

2011 ◽

Vol 29 (No. 3) ◽

pp. 260-267 ◽

Cited By ~ 18

Author(s):

D. Amidžić Klarić ◽

I. Klarić ◽

D. Velić ◽

I. Vedrina Dragojević

Keyword(s):

Heavy Metal ◽

Point Of View ◽

Anthropogenic Source ◽

Cobalt Chromium ◽

Manganese Zinc ◽

Metal Contents ◽

Copper Manganese ◽

Calcium Magnesium ◽

Positive Correlations ◽

Manganese Magnesium

The mineral and heavy metal contents in 17 commercially available Croatian blackberry wines were determined by FAAS/FAES and GFAAS. The concentrations of potassium, sodium, calcium, magnesium, iron, copper, manganese, zinc, cobalt, chromium, and cadmium were between (in mg/l) 924–1507, 11.81–120.10, 86.4–457.1, 183.4–381.2, 0.082–6.273, 0.058–0.767, 1.47–11.53, 0.247–6.645, and (in µg/l) 3.21–11.89, 10.08–15.88, and 0.55–9.9, respectively. A negative correlation was found between the concentrations of macro (Mg) and micro (Fe) minerals. Furthermore, positive correlations were observed between the concentrations of manganese, cadmium, and cobalt that indicated the origin of these elements in the anthropogenic source. Multivariate analyses (PCA/LDA) showed that the distinct patterns of the metal contents in blackberry wines could be identified with quite satisfactory accuracy (sensitivity and specificity) with the subregion of the origin. In regard to the results obtained, Croatian blackberry wines could be considered as safe from the health risk point of view and as a good additional source of the essential nutrients investigated such as manganese, magnesium, and potassium.

Download Full-text

A Comparative Study of Heavy Metal Accumulation in Tissues of the Crested Tern, Sterna bergii, Breeding Near Industrialized and Non-Industrialized Areas

Wildlife Research ◽

10.1071/wr9810665 ◽

1981 ◽

Vol 8 (3) ◽

pp. 665 ◽

Cited By ~ 26

Author(s):

DM Howarth ◽

AJ Hulbert ◽

D Horning

Keyword(s):

Heavy Metal ◽

Metal Accumulation ◽

Heavy Metal Contamination ◽

Heavy Metal Accumulation ◽

Cadmium Content ◽

Salt Glands ◽

Manganese Zinc ◽

Copper Manganese ◽

Cadmium Lead ◽

The Individual

Tissues taken from crested terns were analysed for cadmium, lead, copper, chromium, manganese, zinc and iron. The birds were taken from a breeding colony in a non-industrialized region (North Solitary I., NNE. of Coffs Harbour, N.S.W.) and from one near an industrialized region (Big I., Port Kembla, N.S.W.). The birds from the industrialized region did not show any consistent evidence of significant heavy metal contamination when compared to those of the non-industrialized region. The individual tissues were also compared to assess the distribution of the various metals, and the relative degree to which each tissue accumulates the metals. Some accumulation of chromium, copper, manganese, lead and, to a lesser degree, cadmium and zinc was found in the salt glands. The kidneys had a relatively large cadmium content.

Download Full-text