Variability of winter wheat yield in France under average and unfavourable weather conditions

Наведено дані досліджень впливу різних норм мінера-льних добрив на урожайність і вміст білка в зерні пше-ниці м'якої озимої. Встановлено, що внесення добрив має вплив на збільшення врожайності зерна та сприяє збіль-шенню вмісту білка в зерні. За допомогою кореляційного аналізу встановлено тісний зв'язок між урожайністю та вмістом білка в зерні пшениці озимої r=0,80). Уро-жайність пшениці озимої істотно змінюється від по-годних умов веґетаційного періоду й норм мінерального живлення. Найкращі результати спостерігаються за повного захисту рослин + «Басфоліар 36 Екстра». The investigation data of influence of different norms of mineral fertilizers on productivity and protein content in wheat grain mild winter are presented. It is established that the application of fertilizers has an impact on the increase of productivity of grain and contributes to an increase in protein content in grain. Using correlation analysis a close relationship between yield and protein content of winter wheat (r=0,80) is established. Winter wheat yield considerably changes from weather conditions during vegetation period and norms of mineral nutrition. The best results are for the full protection of plants + Basfoliar 36 Extra.

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Elements of Integration in Winter Wheat Protection Programs

Acta Agrobotanica ◽

10.5586/aa.2005.005 ◽

2012 ◽

Vol 58 (1) ◽

pp. 29-36

Author(s):

Cecylia Jańczak ◽

Grażyna Filoda ◽

Robert Matysiak

Keyword(s):

Winter Wheat ◽

Plant Protection ◽

Wheat Yield ◽

Weather Conditions ◽

Nitrogen Fertilizers ◽

Pests And Diseases ◽

Plant Infection ◽

Winter Wheat Yield

In Poland winter wheat is grown on the area of 1.600.000 ha. Most of the plant protection treatments are being done without thorough analysis of real threats from pests and diseases. The aim of the research is to develop the optimal program of wheat protection against pests and diseases based on integration of various methods of plant protection. Two programs: conventional and integrated were compared. In integrated program the eventual needs and terms of treatments were estimated on the basis of detailed observations of plant infection, pest appearance, their natural enemies and thorough analysis of weather conditions and forecasts. The role of disease resistant wheat varietes and nitrogen fertilizers was also analysed. The research took into account beneficial entomofauna and its influence on pest numbers as well as influence of chemicals used in agriculture on their species. As the result the selective pesticides, safe to beneficial organisms, were selected. The quantity and quality of winter wheat yield was analysed, including protein and gluten contents. The economic effectiveness of various programs of wheat protection against pests and diseases was assessed. The results of research are important both in practical and scientific sense.

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Estimating Farm Wheat Yields from NDVI and Meteorological Data

Agronomy ◽

10.3390/agronomy11050946 ◽

2021 ◽

Vol 11 (5) ◽

pp. 946

Author(s):

Astrid Vannoppen ◽

Anne Gobin

Keyword(s):

Winter Wheat ◽

Crop Yield ◽

Meteorological Data ◽

Wheat Yield ◽

Model Performance ◽

Weather Conditions ◽

Current Data ◽

Monthly Precipitation ◽

Empirical Modelling ◽

Winter Wheat Yield

Information on crop yield at scales ranging from the field to the global level is imperative for farmers and decision makers. The current data sources to monitor crop yield, such as regional agriculture statistics, are often lacking in spatial and temporal resolution. Remotely sensed vegetation indices (VIs) such as NDVI are able to assess crop yield using empirical modelling strategies. Empirical NDVI-based crop yield models were evaluated by comparing the model performance with similar models used in different regions. The integral NDVI and the peak NDVI were weak predictors of winter wheat yield in northern Belgium. Winter wheat (Triticum aestivum) yield variability was better predicted by monthly precipitation during tillering and anthesis than by NDVI-derived yield proxies in the period from 2016 to 2018 (R2 = 0.66). The NDVI series were not sensitive enough to yield affecting weather conditions during important phenological stages such as tillering and anthesis and were weak predictors in empirical crop yield models. In conclusion, winter wheat yield modelling using NDVI-derived yield proxies as predictor variables is dependent on the environment.

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The effect of soil and weather conditions on yields of winter wheat in multi-environmental trials

Biometrical Letters ◽

10.2478/bile-2019-0016 ◽

2019 ◽

Vol 56 (2) ◽

pp. 263-279 ◽

Cited By ~ 1

Author(s):

Marzena Iwańska ◽

Michał Stępień

Keyword(s):

Winter Wheat ◽

Crop Yields ◽

Wheat Yield ◽

Weather Conditions ◽

Grain Filling ◽

Growth Stages ◽

Yield Data ◽

Winter Wheat Yield ◽

Crop Growth Stage ◽

The Impact

SummaryDrought reduces crop yields not only in areas of arid climate. The impact of droughts depends on the crop growth stage and soil properties. The frequency of droughts will increase due to climate change. It is important to determine the environmental variables that have the strongest effect on wheat yields in dry years. The effect of soil and weather on wheat yield was evaluated in 2018, which was considered a very dry year in Europe. The winter wheat yield data from 19 trial locations of the Research Center of Cultivar Testing (COBORU), Poland, were used. Soil data from the trial locations, mean air temperature (T) and precipitation (P) were considered as environmental factors, as well as the climatic water balance (CWB). The hydrothermal coefficient (HTC), which is based on P and T, was also used. The effect of these factors on winter wheat yield was related to the weather conditions at particular growth stages. The soil had a greater effect than the weather conditions. CWB, P, T and HTC showed a clear relationship with winter wheat yield. Soil data and HTC are the factors most recommended for models predicting crop yields. In the selection of drought-tolerant genotypes, the plants should be subjected to stress especially during the heading and grain filling growth stages.

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Stem base rot of winter wheat by Fusarium spp. - causes and effects

Acta Agrobotanica ◽

10.5586/aa.2005.058 ◽

2012 ◽

Vol 58 (2) ◽

pp. 319-328 ◽

Cited By ~ 1

Author(s):

Małgorzata Narkiewicz-Jodko ◽

Zygmunt Gil ◽

Marek Urban

Keyword(s):

Winter Wheat ◽

Wheat Yield ◽

Weather Conditions ◽

Plant Health ◽

Wheat Cultivars ◽

Fusarium Spp ◽

Stem Base ◽

Winter Wheat Yield ◽

Winter Wheat Cultivars ◽

Weed Infestation

The aim of the work was to determine the influence of weather conditions and a degree of weed infestation on the incidence of stem bases rot (Fusarium spp.) of winter wheat cultivars as well as their yield. The winter wheat cultivars (Kobra, Korweta, Mikon, Zyta) were investigated (2000-2002) in the field where the following herbicides: Apyros 75 WG + Atpolan, Affinity 50,75 WG, Attribut 70 WG were applied. It has been shown the occurrence of stem base rot (Fusarium spp.) depended mainly on weather conditions. The application of the herbicides improved the plant health. The stem base rot on winter wheat was caused by Fusarium spp., specially F. culmorum. The decrease in winter wheat yield depended on weather conditions, weed infestation and the occurrence of stem base rot (Fusarium spp.).

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