Modelling the days which are agronomically suitable for sowing maize

Maton, Laure; Bergez, Jacques-Eric; Leenhardt, Delphine

doi:10.1016/j.eja.2007.02.007

Cited by 35 publications

(24 citation statements)

References 14 publications

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Section: Methodssupporting

confidence: 87%

“…The thresholds for sowing and harvest suitability (Table 2a) were based on published literature and tested using the observed sowing and harvest dates for spring barley, winter wheat and maize at 30 experimental stations at in the Czech Republic over a period of 20 years. The approach used is broadly in agreement with similar studies by Leenhardt & Lemaire (2002) and Maton et al (2007). The soil-moisture thresholds used to define the suitable days for sowing and harvesting were stricter than those used by Rounsevell (1993) and Cooper et al (1997), as no soil compaction or soil-structure damage should occur in sustainable agricultural systems.…”

Section: Agroclimatic Indicessupporting

confidence: 72%

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Agroclimatic conditions in Europe under climate change

Trnka

Olesen

Kersebaum

et al. 2011

Global Change Biology

355

245

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To date, projections of European crop yields under climate change have been based almost entirely on the outputs of crop-growth models. While this strategy can provide good estimates of the effects of climatic factors, soil conditions and management on crop yield, these models usually do not capture all of the important aspects related to crop management, or the relevant environmental factors. Moreover, crop-simulation studies often have severe limitations with respect to the number of crops covered or the spatial extent. The present study based on agroclimatic índices, pro vides a general picture of agroclimatic conditions in western and central Europe (study área lays between 8.5°W-27°E and 37-63.5°N), which allows for a more general assessment of climate-change impacts. The results obtained from the analysis of data from 86 different sites were clustered according to an environmental stratification of Europe. The analysis was carried for the baseline and future climate conditions (time horizons of 2030, 2050 and with a global temperature increase of 5 °C) based on outputs of three global circulation models. For many environmental zones, there were clear signs of deteriorating agroclimatic condition in terms of increased drought stress and shortening of the active growing season, which in some regions become increasingly squeezed between a cold winter and a hot summer. For most zones the projections show a marked need for adaptive measures to either increase soil water availability or drought resistance of crops. This study concludes that rainfed agriculture is likely to face more climate-related risks, although the analyzed agroclimatic indicators will probably remain at a level that should permit rainfed production. However, results suggests that there is a risk of increasing number of extremely unfavorable years in many climate zones, which might result in higher interannual yield variability and constitute a challenge for proper crop management.

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Section: Methodssupporting

confidence: 87%

Section: Agroclimatic Indicessupporting

confidence: 72%

Agroclimatic conditions in Europe under climate change

Trnka

Olesen

Kersebaum

et al. 2011

Global Change Biology

355

245

View full text Add to dashboard Cite

show abstract

“…The yields were significantly influenced by all these factors. As a C4 crop, maize reacts relatively strongly to temperature fluctuations and requires favorable temperatures and sufficient water supply for germination and good establishment, especially if sown in late spring (Maton et al, 2007). In this study, the highest maize yields were achieved with mineral fertilizers, particularly in cooler years and at the cooler "Hill" site.…”

Section: Effect Of Fertilizer Treatments On Yield Performance Of the mentioning

confidence: 60%

Fertilizing Potential of Separated Biogas Digestates in Annual and Perennial Biomass Production Systems

Ehmann

Thumm

Lewandowski

2018

Front. Sustain. Food Syst.

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Digestates produced by the increasing number of biogas plants require appropriate treatment or recycling. This study investigates the fertilizing potential of separated biogas digestates. These contain valuable nutrients and can be used in agriculture to close the nutrient cycle. Multi-year field experiments were established at two challenging sites in south-west Germany in 2010; results from 6 years are shown here. The objectives were to determine (1) whether separated digestates can complement or substitute mineral fertilizers and (2) their effect on long-term yield performance in different biomass cropping and fertilization systems. The fertilizing performance was assessed in a split-plot design with four replications using three cropping systems: (1) perennial grassland; (2) intercropping of triticale and clover grass; (3) silage maize. Five N fertilization treatments were applied, each at 150 kg N ha −1 :• mineral fertilizer (calcium ammonium nitrate) • combined solid digestate fraction and mineral fertilizer • solid digestate fraction • combined liquid digestate fraction and mineral fertilizer • liquid digestate fraction.The influences of site, cropping system, year and fertilization treatment were highly significant.The mineral fertilizer and combination "liquid digestate fraction + mineral fertilizer" mostly led to the highest quantitative biomass yields in all cropping systems at both sites. Fertilization with solid digestate fraction produced lowest yields in all fertilized plots, with results very often not significantly different from the untreated control. Maize achieved relatively high yields in years with favorable weather conditions; unfavorable conditions led to low yields. The grassland and intercropping systems were less susceptible to weather conditions, producing a more constant biomass supply irrespective of site, treatment and year. The separated biogas digestates were found to have a comparable effect to mineral fertilizer on biomass yield, but this varied with cropping system. In the intercropping system, complete substitution was Ehmann et al. Fertilizing With Separated Biogas Digestates possible. The solid fraction is more likely to contribute positively to soil humus in annual systems. In general, the combined application of digestate and mineral fertilizer is highly recommendable to meet crops' short-and long-term N demand, even on challenging sites. In this study, it allowed a mineral fertilizer input reduction of 66%.

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“…These thresholds were tested using the reported sowing dates of spring barley, winter wheat and maize at 30 experimental stations at the State Institute for Agriculture Supervision and Testing during the period from 1985 to 2005. A similar approach was used by Leenhardt and Lemaire (2002) and Maton et al (2007) to estimate maize sowing dates for regional water management. We considered days suitable for harvesting if they had a soil water content below 70% of retention capacity in the top layer of soil and no precipitation above 1 mm on the given day or above 5 mm on the preceding day.…”

Section: Agrometeorological Indicesmentioning

confidence: 99%

Expected changes in agroclimatic conditions in Central Europe

et al. 2011

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During the past few decades, the basic assumption of agroclimatic zoning, i.e., that agroclimatic conditions remain relatively stable, has been shattered by ongoing climate change. The first aim of this study was to develop a tool that would allow for effective analysis of various agroclimatic indicators and their dynamics under climate change conditions for a particular region. The results of this effort were summarized in the AgriClim software package, which provides users with a wide range of parameters essential for the evaluation of climate-related stress factors in agricultural crop production. The software was then tested over an area of 114,000 km 2 in Central Europe. We have found that by 2020, the combination of increased air temperature and changes in the amount and distribution of precipitation will lead to a prolonged growing season and significant shifts in the agroclimatic zones in Central Europe; in particular, the areas that are currently most productive will be reduced and replaced by warmer but drier conditions in the same time the higher elevations will most likely experience improvement in their agroclimatic conditions. This positive effect might be short-lived, as by 2050, even these areas might experience much drier conditions than observed currently. Both the rate and the scale of the shift are amazing as by 2020 (assuming upper range of the climate change projections) only 20-38% of agriculture land in the evaluated 262 Climatic Change (2011) 108:261-289 region will remain in the same agroclimatic and by 2050 it might be less than 2%. On the other hand farmers will be able to take advantage of an earlier start to the growing season, at least in the lowland areas, as the proportion of days suitable for sowing increases. As all of these changes might occur within less than four decades, these issues could pose serious adaptation challenges for farmers and governmental policies. The presented results also suggest that the rate of change might be so rapid that the concept of static agroclimatic zoning itself might lose relevance due to perpetual change.

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Modelling the days which are agronomically suitable for sowing maize

Cited by 35 publications

References 14 publications

Agroclimatic conditions in Europe under climate change

Agroclimatic conditions in Europe under climate change

Fertilizing Potential of Separated Biogas Digestates in Annual and Perennial Biomass Production Systems

Expected changes in agroclimatic conditions in Central Europe

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