scholarly journals Effect of weather conditions on the content of sugars in plants of european maize cultivars grown for silage

2020 ◽  
Vol 26 (3) ◽  
pp. 57-64
Author(s):  
Barbara Gąsiorowska ◽  
Anna Płaza ◽  
Emilia Rzążewska ◽  
Michał Waranica
Keyword(s):  
Weather Conditions ◽  
Maize Cultivars ◽  
European Maize

scholarly journals Yielding of two types of maize cultivars in relation to selected agrotechnical factors

2019 ◽  
Vol 65 (No. 8) ◽  
pp. 416-423 ◽  
Author(s):  
Małgorzata Jagła ◽  
Piotr Szulc ◽  
Katarzyna Ambroży-Deręgowska ◽  
Iwona Mejza ◽  
Joanna Kobus-Cisowska
Keyword(s):  
Field Experiments ◽  
Weather Conditions ◽  
Fertilizer Application ◽  
Stay Green ◽  
Growing Seasons ◽  
Maize Cultivars ◽  
Clear Result ◽  
The Difference ◽  
Area Unit ◽  
Np Fertilizer

The study presents the results of field experiments, the aim of which was to assess the yield of maize cultivars with different genetic profiles depending on the method of soil preparation for sowing and the method of NP fertilizer application. The yield and water content in the grain were significantly dependent on changing weather conditions in the growing seasons. Sowing maize into the soil cultivated traditionally (autumn ploughing), stay-green type cultivars and row fertilization positively influenced maize yielding. The stay-green cultivar yielded at a higher level compared to the fast maturing cultivar, the difference being significant in the year characterized by unfavourable distribution (deficit) of precipitation in the growing season. The stay-green cultivar reacted favourably to the localized application of NP fertilizer, the clear result of which was the increase in grain yield. Direct maize sowing significantly reduced the number of production ears per surface area unit and the number of grains on the ear. Selection of the stay-green cultivar and row fertilization with NP fertilizer improved this condition.  

scholarly journals Assessment of the influence of fertilisation and environmental conditions on maize health

2018 ◽  
Vol 54 (No. 3) ◽  
pp. 174-182 ◽  
Author(s):  
Szulc Piotr ◽  
Bocianowski Jan ◽  
Nowosad Kamila ◽  
Michalski Tadeusz ◽  
Waligóra Hubert ◽  
...  
Keyword(s):  
Field Experiments ◽  
Weather Conditions ◽  
Ustilago Maydis ◽  
Combined Application ◽  
Enhanced Resistance ◽  
Maize Borer ◽  
European Maize ◽  
Maize Plants ◽  
Pyrausta Nubilalis ◽  
Maize Smut

Field experiments showed the occurrence of such agrophages as the frit fly (Oscinella frit L.) and the European maize borer (Pyrausta nubilalis Hbn.). Identified diseases included fusariosis (Fusarium ssp.) and maize smut (Ustilago maydis Corda). The incidence of the frit fly was influenced by weather conditions, mainly temperature, in the period from sowing to the BBCH 15–16 phase. Moderate temperature conditions contributed to the occurrence of the pest. The significantly highest percentage of plants damaged by larvae of this pest was recorded on maize fertilised only with potassium (K) and phosphorus with potassium (PK). In turn, the lowest percentage of plants damaged by frit fly larvae was recorded for maize fertilised with nitrogen and potassium (NK). The percentage of plants damaged by the European maize borer was influenced by temperature and humidity conditions in individual years of the study. The highest percentage of plants damaged by larvae of the pest was found in the vegetation season characterised by the highest amount of rainfall with the lowest mean daily air temperature. The presence of potassium in a given fertiliser combination, the application of manure or combined application of manure and mineral fertilisation resulted in an enhanced resistance of maize plants to Fusarium ssp. fungi. The significantly greatest infestation of maize plants by the fungus Ustilago maydis Corda was recorded in the treatment in which only nitrogen was applied. In turn, the lowest percentage of plants with symptoms of this disease was recorded in the treatment with the application of potassium alone and in the application of potassium together with phosphorus.

scholarly journals Intercontinental trials reveal stable QTL for Northern corn leaf blight resistance in Europe and in Brazil

2020 ◽  
Author(s):  
Ana L. Galiano-Carneiro ◽  
Bettina Kessel ◽  
Thomas Presterl ◽  
Thomas Miedaner
Keyword(s):  
Leaf Blight ◽  
Maize Breeding ◽  
Resistance Level ◽  
Northern Corn Leaf Blight ◽  
Maize Germplasm ◽  
Maize Cultivars ◽  
European Maize ◽  
The Stability ◽  
Dh Lines ◽  
Corn Leaf Blight

Abstract Key message NCLB is the most devastating leaf disease in European maize, and the introduction of Brazilian resistance donors can efficiently increase the resistance levels of European maize germplasm. Abstract Northern corn leaf blight (NCLB) is one of the most devastating leaf pathogens in maize (Zea mays L.). Maize cultivars need to be equipped with broad and stable NCLB resistance to cope with production intensification and climate change. Brazilian germplasm is a great source to increase low NCLB resistance levels in European materials, but little is known about their effect in European environments. To investigate the usefulness of Brazilian germplasm as NCLB resistance donors, we conducted multi-parent QTL mapping, evaluated the potential of marker-assisted selection as well as genome-wide selection of 742 F1-derived DH lines. The line per se performance was evaluated in one location in Brazil and six location-by-year combinations (= environments) in Europe, while testcrosses were assessed in two locations in Brazil and further 10 environments in Europe. Jointly, we identified 17 QTL for NCLB resistance explaining 3.57–30.98% of the genotypic variance each. Two of these QTL were detected in both Brazilian and European environments indicating the stability of these QTL in contrasting ecosystems. We observed moderate to high genomic prediction accuracies between 0.58 and 0.83 depending on population and continent. Collectively, our study illustrates the potential use of tropical resistance sources to increase NCLB resistance level in applied European maize breeding programs.

scholarly journals Evaluation of molecular diversity of central European maize cultivars

2016 ◽  
Vol 28 (2) ◽  
pp. 93
Author(s):  
Zelmira Balazova ◽  
Martin Vivodk ◽  
Zdenka Galova
Keyword(s):  
Molecular Diversity ◽  
Central European ◽  
Maize Cultivars ◽  
European Maize

Trends in genetic diversity among European maize cultivars and their parental components during the past 50 years

2005 ◽  
Vol 111 (5) ◽  
pp. 838-845 ◽  
Author(s):  
Jochen C. Reif ◽  
Sonia Hamrit ◽  
Martin Heckenberger ◽  
Wolfgang Schipprack ◽  
Hans Peter Maurer ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
The Past ◽  
Maize Cultivars ◽  
European Maize

Evaluating Microbial Partitioning Differences Under Storm and Dry-Weather Conditions

2005 ◽  
Author(s):  
Gregory W. Characklis ◽  
Mackenzie J. Dilts ◽  
Otto D. Simmons ◽  
Leigh-Anne H. Krometis ◽  
Christina Likirdopulos ◽  
...  
Keyword(s):  
Weather Conditions ◽  
Microbial Partitioning

Technical textiles for protection against Arc-flash fire: Savesplash®

2020 ◽  
pp. 67-78
Author(s):  
Nandan Kumar ◽  
Sainath Shrikant Pawaskar
Keyword(s):  
Attenuation Factor ◽  
Threshold Energy ◽  
Single Layer ◽  
Weather Conditions ◽  
Electric Arc ◽  
Risk Category ◽  
Technical Textiles ◽  
Flash Fire ◽  
Level 3 ◽  
Arc Flash

Flash fire caused by electric arc is different than that caused by flammable liquids/fumes or combustible dusts. A suitable protective clothing for protection against electric arc-flash must be designed as per Indian weather conditions. Currently available garments are manufactured using two or three layers of woven/nonwoven combinations to achieve higher Hazard Risk Category (HRC) rating (level 3 and above). However, they are heavy and not comfortable to the end users. Savesplash® is a single layer inherent flame-retardant knitted fabric. Its arc rating was determined using ASTM standards. It achieved arc thermal performance value (ATPV) of 41 cal/cm2, breakopen threshold energy (E_BT) of 42 cal/cm2 and heat attenuation factor (HAF) of 94% when tested as per ASTM F1959/F1959M-14 which translated into an arc rating of 41 cal/cm2. This is equivalent to HRC level 4 ratings as per National Fire Protection Association’s NFPA 70E standard (USA). Further, cut and sewn gloves (HM-100) developed using Savesplash® fabric reinforced with leather on palm area achieved ATPV of 63 cal/cm2 and HAF of 94.5% when tested as per ASTM F2675/F2675M-13.

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