Entomopathogenic fungi decrease Rhizoctonia disease in potato in field conditions

Rhizoctonia potato disease is widespread in the world and causes substantial yield and quality losses in potato. This study aimed to evaluate the efficacy of entomopathogenic fungi Metarhizium robertsii and Beauveria bassiana in the inhibition of potato Rhizoctonia complex disease. The efficacy of the entomopathogenic fungi M. robertsii and B. bassiana in the defense of potato against Rhizoctonia disease (stem cancer, black scrulf and other forms of manifestation on tubers) was estimated under field conditions in Western Siberia. Preplanting treatment of the tubers with B. bassiana decreased Rhizoctonia disease in the stems and stolons. At the same time, treatment with M. robertsii did not cause a decrease in Rhizoctonia disease in these organs. However, both fungi decreased the sclerotium index on the tubers of new crops. We demonstrated two mechanisms of inhibition of Rhizoctonia solani by M. robertsii and B. bassiana, including (1) direct effect, expressed as inhibition of R. solani sclerotium formation in cocultivation assays, and (2) indirect effect, which is associated with increased peroxidase activity in potato roots under the influence of colonization by entomopathogenic fungi. We suggest that the treatment of seed tubers with B. basiana can effectively manage Rhizoctonia disease during the plant vegetative season and that both fungi significantly improve the quality of the new tuber crop.

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Effects of irrigation interval and quantity on the yield and quality of confectionary pumpkin grown under field conditions

Agricultural Water Management ◽

10.1016/j.agwat.2015.06.025 ◽

2015 ◽

Vol 159 ◽

pp. 290-298 ◽

Cited By ~ 13

Author(s):

Duran Yavuz ◽

Musa Seymen ◽

Nurcan Yavuz ◽

Önder Türkmen

Keyword(s):

Field Conditions ◽

Yield And Quality ◽

Irrigation Interval

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Influence of Peanut Stripe Virus on Growth, Yield, and Quality of Florunner Peanut1

Peanut Science ◽

10.3146/i0095-3679-15-2-2 ◽

1988 ◽

Vol 15 (2) ◽

pp. 47-52 ◽

Cited By ~ 10

Author(s):

R. E. Lynch ◽

J. W. Demski ◽

W. D. Branch ◽

C. C. Holbrook ◽

L. W. Morgan

Keyword(s):

Growth Yield ◽

Field Conditions ◽

Seed Infection ◽

Yield And Quality ◽

Peanut Stripe Virus ◽

Immunosorbent Assays

Abstract The influence of peanut stripe virus (PStV) on growth, yield, and grade of Florunner peanut and percent seed transmissions was determined under field conditions during 1985 and 1986. Plants were artificially inoculated with PStV and infection was confirmed by enzyme-linked immunosorbent assays. Under the conditions of these tests, PStV did not significantly influence growth, yield, or grade of Florunner peanut, and seed infection averaged less than 2 percent.

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Agrobiological evaluation of new apple clonal rootstocks of the Michurinsk State Agrarian University selection using different breeding methods

BIO Web of Conferences ◽

10.1051/bioconf/20202301002 ◽

2020 ◽

Vol 23 ◽

pp. 01002

Author(s):

Zinaida N. Tarova ◽

Nataliya L. Churikova ◽

Maxim L. Dubrovsky ◽

Andrey V. Kruzhkov ◽

Natalya N. Savelyeva

Keyword(s):

Nutrient Medium ◽

Apple Tree ◽

Breeding Methods ◽

Apple Trees ◽

Biological Features ◽

Clonal Micropropagation ◽

Time Treatment ◽

Yield And Quality ◽

University Selection

The results of many years of research on propagation of promising forms of clonal stocks of apple trees of the Michurinsk State Agrarian University selection in the mother plantation by stooling, by herbaceous cuttings and by clonal micropropagation are presented. According to the complex of economic and biological features, promising clonal rootstocks of an apple tree with high shoot-forming capacity in the mother plant were identified: dwarf apple trees 2-3-49, 2-15-2, 2-15-15, 3-4-7, 5-21-27; semi dwarf apple trees 2-3-14, 2-9-49, 2-9-102, 2-12-10, 5-24-1, 5-27-1. The rootstocks that are promising for propagation by herbaceous cuttings – 2-3-14, 2-3-49, 2-12-10, 2-15-15, 3-4-7, 5-21-93; at the same time, treatment with exogenous promoters such as IBA and NAA at a concentration of 50 mg/l increases the yield and quality of stock material. A modified MSO nutrient medium with the addition of 0.5-1.0 mg/l of 6-BAP and 0.1-0.2 mg/l of IBA is selected for the clonal micropropagation of apple stocks.

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Quantifying the boron demand of Pelargonium graveolens for optimum biomass yield and quality of essential oil under field conditions

Journal of Plant Nutrition ◽

10.1080/01904167.2021.1943681 ◽

2021 ◽

pp. 1-14

Author(s):

Pratibha Tripathi ◽

Raghvendra Pratap Singh ◽

Shubham Srivastava ◽

B. Shivanna ◽

Anil Kumar Singh ◽

...

Keyword(s):

Essential Oil ◽

Biomass Yield ◽

Field Conditions ◽

Pelargonium Graveolens ◽

Yield And Quality

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Field estimate with NDVI of grain yield and quality of wheat flour

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v25n12p801-806 ◽

2021 ◽

Vol 25 (12) ◽

pp. 801-806

Author(s):

João P. K. Reznick ◽

Volnei Pauletti ◽

Gabriel Barth

Keyword(s):

Grain Yield ◽

Optical Sensors ◽

Vegetation Index ◽

Normalized Difference Vegetation Index ◽

Wheat Yield ◽

Field Conditions ◽

Yield And Quality ◽

Technological Quality ◽

Grain Yield And Quality

ABSTRACT Nitrogen fertilization is essential for wheat yield and quality but needs more accuracy, and the use of proximal optical sensors in the field can assist in this goal. This study aimed to verify if it is possible to use the normalized difference vegetation index (NDVI) obtained throughout the wheat growth phase to estimate the grain yield and the technological quality of the flour from cultivars submitted to nitrogen doses. The experiment was conducted at field conditions in Ponta Grossa, PR, Southern Brazil. The experimental design was randomized blocks in a 4 × 6 factorial scheme with four replicates. The cultivars Quartzo, Gralha Azul, Sinuelo, and Toruk, combined with six doses of N (0, 40, 80, 120, 160, and 200 kg ha-1 of N), were evaluated. The NDVI values were sensitive to both nitrogen doses and the different cultivars. There was a relationship between NDVI and grain yield, protein, and gluten concentration of flour. The NDVI estimated the gluten strength, stability, tenacity, extensibility of the mass, and tenacity/extensibility ratio of the flour obtained at the beginning of the cycle, but not for all cultivars. The determinations of NDVI with active optical sensor GreenSeeker in wheat are efficient to estimate the grain yield and the flour quality under field conditions, allowing to generate models for estimation of these variables separately for each cultivar.

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YIELD AND QUALITY OF ONION VARIETIES TO THREE SOIL MOISTURE REGIMES IN LYSIMETERS AND FIELD CONDITIONS IN NIGER, WEST AFRICA.

HortScience ◽

10.21273/hortsci.27.6.587a ◽

1992 ◽

Vol 27 (6) ◽

pp. 587a-587

Author(s):

CHIT RK PRASHAR ◽

GOVIND C. SHARMA

Keyword(s):

Soil Moisture ◽

Sandy Loam ◽

Soil Depth ◽

Field Conditions ◽

Medium Size ◽

The Past ◽

Yield And Quality ◽

Moisture Regimes ◽

The Mean

Yield and quality responses to Galmi Violet, Galmi White and Sumrana Violet were studied during 1990-91 and 1991-92 in Maradi region in Niger. Three regimes comprised of irrigating when the soil moisture depletion in 20 cm of soil depth was 40%, 60% and 80%. Investigations were carried out both under field conditions and in the lysimeters. The soil was sandy loam to loam. The lysimeters were 2m×2m×1m drainage type and well set over the past twenty years. The crop was raised during the dry season from October to March with no rainfall. Despite the low temperatures the radiation levels were high. Onion yield was higher under low irrigation regime. The mean yield was 32.5 tons/ha. However, the bulk density was higher under higher moisture regimes. The keeping quality over eight month period was not affected by soil moisture regimes. The bulbs of Sumrana Violet were of medium size whereas the bulbs of Galmi Violet and White were larger size. From a market acceptability standpoint violet onions were preferred over the white ones.

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INFLUENCE OF COW MANURE AND ITS VERMICOMPOSTING ON THE IMPROVEMENT OF GRAIN YIELD AND QUALITY OF RICE (ORYZA SATIVA L.) IN FIELD CONDITIONS

Applied Ecology and Environmental Research ◽

10.15666/aeer/1601_097110 ◽

2018 ◽

Vol 16 (1) ◽

pp. 97-110 ◽

Cited By ~ 4

Author(s):

E. TAHERI RAHIMABADI

Keyword(s):

Oryza Sativa ◽

Grain Yield ◽

Oryza Sativa L ◽

Field Conditions ◽

Cow Manure ◽

Yield And Quality ◽

Grain Yield And Quality

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Effect of Micronutrients on Pepper (Capsicum annum) Grown in Peat Soil under Greenhouse and Field Conditions

Experimental Agriculture ◽

10.1017/s0014479700007195 ◽

1976 ◽

Vol 12 (2) ◽

pp. 129-133 ◽

Cited By ~ 1

Author(s):

J. Navrot ◽

I. Levin

Keyword(s):

Peat Soil ◽

Foliar Spray ◽

Field Conditions ◽

Red Pepper ◽

Positive Effects ◽

Capsicum Annum ◽

Yield And Quality ◽

Copper Zinc

SUMMARYA study was made of the effect of micronutrients such as boron, copper, zinc, manganese and iron, applied as foliar spray or directly to peat soil, on growth and yields of pepper under greenhouse and field conditions. Combinations of micronutrients were applied in two forms, as salts or as chelates. Results showed positive effects on yield and quality of red pepper, and soil chemical tests substantiated the results.

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