Agrometeorological Requirements of Maize Crop Phenology for Sustainable Cropping—A Historical Review for Romania

Vâtcă, Sorin; Stoian, Valentina Ancuța; Man, Titus; Horváth, Csaba; Vidican, Roxana; Gâdea, Ștefania; Vâtcă, Anamaria; Rotaru, A.; Vârban, Rodica; Cristina, Moldovan; Stoian, Vlad

doi:10.3390/su13147719

Cited by 10 publications

(10 citation statements)

References 62 publications

(74 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The interactions between parameters were analyzed with scatterplots, and regressions were calculated for each bi-factorial interaction with the "stats" package from the R platform [51]. Regressions were further verified with the "MASS" package [53,54]. Pearson correlations between parameters were calculated with the package "Hmisc" and all significant correlations were analyzed [55].…”

Section: Discussionmentioning

confidence: 99%

Divergence in Corn Mycorrhizal Colonization Patterns Due to Organic Treatment

Pop-Moldovan

Vârban

Corcoz

et al. 2021

Plants

Self Cite

View full text Add to dashboard Cite

Excessive application of chemical fertilizers and other agrochemicals can cause large imbalances in soils and agricultural ecosystems. In this context, mycorrhizae represent a viable solution to mitigate these negative effects. Arbuscular mycorrhizae are vital symbionts due to the multiple benefits they bring to both crops and the entire agroecosystem. The main purpose of this study was to observe whether differentiated fertilization has an influence on mycorrhizal colonization patterns in corn. Observed frequencies and intensities of colonization varied widely between phenophases and treatments, with 20% variation for frequency and 14% for intensity, which implies the constant development of both partners during the vegetation period. Arbuscules and vesicles were present in all development stages, but the overall mean was lower than 4% for arbuscules and 1% for vesicles in the analyzed root fragments. Intensity was highly correlated with frequency of colonization compared with arbuscules, where the coefficient was 0.54, and vesicles, with a coefficient of 0.16. Both PCA and NMDS provided good graphical solutions, with a high resolution due to explained variance and good spatial position of vectors. The use of mycorrhizal maps permits the full exploration of colonization patterns and fungal strategy, and the assessment of mycorrhizae-free areas. For the untreated variant, the strategy was oriented toward a longitudinal colonization followed by an irregular development of hyphae with multiple non-colonized areas. Treatment acts to stimulate the appearance of mycorrhizal spots, which further develop radially.

show abstract

Section: Discussionmentioning

confidence: 99%

Divergence in Corn Mycorrhizal Colonization Patterns Due to Organic Treatment

Pop-Moldovan

Vârban

Corcoz

et al. 2021

Plants

Self Cite

View full text Add to dashboard Cite

show abstract

“…where Tmax is the daily maximum temperature, Tmin is the daily minimum temperature and Tb is the base temperature, 10°C in case of maize (Croitoru et al, 2020;Vâtcă et al, 2021apud. Bîlteanu et al, 1974.…”

Section: Methodsmentioning

confidence: 99%

“…(Erenstein et al, 2022). This is possible as maize is a crop characterized by a great phenotypic plasticity (Liu et al, 2021), which enables its production in a wide range of conditions -from 50°N to about 45°S (Vâtcă et al, 2021), from 0 to over 3800 m.a.s.l. (Ramirez-Cabral et al, 2017), and in different climates.…”

Section: Introductionmentioning

confidence: 99%

“…As a thermophilic plant, maize tolerates well high temperatures compared to other cereal crops, but its productivity is greatly affected by extreme temperatures. The optimal thermal conditions depend on the phenological phase (germination phase: 15-25°C, leaf development: 18-23°C, inflorescence: 18-23°C, flowering, which is also considered the critical phase: 18-24°C, fruit development: 18-22°C, ripening: 15-16°C) (Vâtcă et al, 2021), but, generally, values below 10°C and above 32°C are detrimental (Bîlteanu et al, 1983;Waqas et al, 2021). Besides the direct effects on the plant, high temperatures also determine the increase of evapotranspiration and, thus, the reduction of the available water resources, concomitantly with a higher plant water requirement (Lobell et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of climate conditions on maize yield in Oltenia (1990-2021)

Vlăduț,

Licurici,

Burada

2023

View full text Add to dashboard Cite

Maize, the most important cereal crop at global level, is a climate-sensitive plant. Consequently, the changes of the key meteorological parameters, namely temperature and precipitation amount, determine low yields, especially in rain-fed regions. The dependency of maize yield on climate conditions was assessed based on monthly values of the considered meteorological parameters (data from 14 meteorological stations for the period 1990-2021). The mean values of the analysed interval generally reveal proper conditions for the development of maize. However, starting with June until September, mean temperatures are 1 to 2°C above the optimum thermal threshold, as mentioned in the specialized literature. The growth degree days index (GDD) emphasizes Oltenia as a region with a very good thermal potential for maize, all mean values exceeding 1600°C, but the southwestern sector of the plain area has already exceeded 2000°C, underlining the increase in heat stress. The water deficit generates dry conditions, especially in Mehedinți, Dolj, and Olt, mainly in the interval July-August, which also corresponds to the maximum water requirements of maize. Drought prone areas were determined based on Selyaninov's hydrothermal coefficient (HTC), which indicates slightly dry conditions in the growing season in the plain area, while northwards, in the piedmont and Subcarpathians, the climate is slightly humid, respectively moderately humid, drought risk decreasing gradually in this direction. At monthly level, August is the most problematic period as, except the northeastern part (Polovragi and Râmnicu Vâlcea), the entire region displays dry, moderately dry, and slightly dry conditions. The lowest maize yields correspond to the years 1993, 2000, 2002, 2007, and 2012. If in the first three years, the drastic yield reduction was mostly determined by a severe water deficit registered during the entire life cycle of the plant, in the last two years, the main restrictive factor was represented by temperature, mean monthly values exceeding 27°C and mean maximum values 35°C, especially in the plain area. Taking into account the projected increase in temperature and water deficit, the impact of climate conditions on maize crops may also be gradually higher in Oltenia and certain adaptation measures should be taken.

show abstract

“…Thus, most of the analyzed area is covered by agricultural land (Figure 1), which accounts for 78% of the study area and mainly consists of arable land (about 70% of the total study area). Analyzing phenological changes can be crucially important in the context of such environmental changes which can generate significant implications for the productivity of agricultural crops, such as maize (Zea mays L.), the phenology of which is strongly dependent on air temperature conditions [74].…”

Section: Study Areamentioning

confidence: 99%

Climate Warming-Induced Changes in Plant Phenology in the Most Important Agricultural Region of Romania

et al. 2022

View full text Add to dashboard Cite

Changes in plant phenology are a direct indicator of climate change and can produce important consequences for agricultural and ecological systems. This study analyzes changes in plant phenology in the 1961–2010 period (for both the entire interval and in three successive multi-decades: 1961–1990, 1971–2000 and 1981–2010) in southern and southeastern Romania, the country’s most important agricultural region. The analysis is based on mean monthly air temperature values collected from 24 regional weather stations, which were used for extracting the length (number of days) of phenophases (growing season onset, budding–leafing, flowering, fruiting, maturing, dissemination of seeds, start of leaf loss, end of leaf loss) and of the overall climatic growing season (CGS, which includes all phenophases), by means of the histophenogram method. Using a number of reliable statistical tools (Mann–Kendall test, Sen’s slope estimator and the regression method) for exploring annual trends and net (total) changes in the length of the phenological periods, as well as for detecting the climate—growing season statistical relationships, our results revealed complex phenology changes and a strong response in phenological dynamics to climate warming. Essentially, a lengthening of all phenophases (maximal in the maturing period, in terms of statistical significance and magnitude of trends—on average 0.48 days/yr/24 days net change in the 1961–2010 period, or even 0.94 days/yr/28 days net change in the 1971–2000 sub-period) was noticed, except for the fruiting and dissemination phenophases, which were dominated by negative trends in the number of days, but partially statistically significant (at a confidence level threshold of at least 90%). The CGS exhibited overall increasing trends, with an average of 0.21 days/yr/11 days net change in the 1961–2010 interval, and even of 0.90 days/yr/27 days net change in the 1981–2010 sub-period. Moreover, based on the slope values obtained upon application of a linear regression to mean temperature and CGS, we discovered that a 1 °C increase in climate warming accounted for a remarkable lengthening of the CGS, on average of 14 days between 1961 and 2010, and of 16 days between 1981 and 2010. Our results can help improve the adaptation of agroecological systems to future climate change.

show abstract

Agrometeorological Requirements of Maize Crop Phenology for Sustainable Cropping—A Historical Review for Romania

Cited by 10 publications

References 62 publications

Divergence in Corn Mycorrhizal Colonization Patterns Due to Organic Treatment

Divergence in Corn Mycorrhizal Colonization Patterns Due to Organic Treatment

Influence of climate conditions on maize yield in Oltenia (1990-2021)

Climate Warming-Induced Changes in Plant Phenology in the Most Important Agricultural Region of Romania

Contact Info

Product

Resources

About