Impact of weather conditions on variability in sunflower yield over years in eastern parts of Croatia and Hungary

Mijić, Anto; Liović, Ivica; Kovačević, Vlado; Pepó, Péter

doi:10.1556/aagr.60.2012.4.10

Cited by 11 publications

(5 citation statements)

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“…For sunflower, our results proved that 61% of its yield change variation could be due to climatic variables. This result corroborates the findings of Mijić et al [67], who indicated that rainfall before and during the vegetation period has a great effect on sunflower yield.…”

Section: Discussionsupporting

confidence: 92%

Climate Variability and Change Affect Crops Yield under Rainfed Conditions: A Case Study in Gedaref State, Sudan

et al. 2021

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It is projected that, on average, annual temperature will increase between 2 °C to 6 °C under high emission scenarios by the end of the 21st century, with serious consequences in food and nutrition security, especially within semi-arid regions of sub-Saharan Africa. This study aimed to investigate the impact of historical long-term climate (temperature and rainfall) variables on the yield of five major crops viz., sorghum, sesame, cotton, sunflower, and millet in Gedaref state, Sudan over the last 35 years. Mann–Kendall trend analysis was used to determine the existing positive or negative trends in temperature and rainfall, while simple linear regression was used to assess trends in crop yield over time. The first difference approach was used to remove the effect of non-climatic factors on crop yield. On the other hand, the standardized anomaly index was calculated to assess the variability in both rainfall and temperature over the study period (i.e., 35 years). Correlation and multiple linear regression (MLR) analyses were employed to determine the relationships between climatic variables and crops yield. Similarly, a simple linear regression was used to determine the relationship between the length of the rainy season and crop yield. The results showed that the annual maximum temperature (Tmax) increased by 0.03 °C per year between the years 1984 and 2018, while the minimum temperature (Tmin) increased by 0.05 °C per year, leading to a narrow range in diurnal temperature (DTR). In contrast, annual rainfall fluctuated with no evidence of a significant (p > 0.05) increasing or decreasing trend. The yields for all selected crops were negatively correlated with Tmin, Tmax (r ranged between −0.09 and −0.76), and DTR (r ranged between −0.10 and −0.70). However, the annual rainfall had a strong positive correlation with yield of sorghum (r = 0.64), sesame (r = 0.58), and sunflower (r = 0.75). Furthermore, the results showed that a longer rainy season had significant (p < 0.05) direct relationships with the yield of most crops, while Tmax, Tmin, DTR, and amount of rainfall explained more than 50% of the variability in the yield of sorghum (R2 = 0.70), sunflower (R2 = 0.61), and millet (R2 = 0.54). Our results call for increased awareness among different stakeholders and policymakers on the impact of climate change on crop yield, and the need to upscale adaptation measures to mitigate the negative impacts of climate variability and change.

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Section: Discussionsupporting

confidence: 92%

Climate Variability and Change Affect Crops Yield under Rainfed Conditions: A Case Study in Gedaref State, Sudan

et al. 2021

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“…In our study, 96 sunflower genotypes (36.9% of the total) had significantly less PSC than the susceptible check HA 89 (28.1% PSC DI). Hungary is situated in the temperate zone and is affected by three large climatic zones: the Atlantic, continental, and Mediterranean (Anonymous, 2008 and mean temperature ranged between 16.8 and 17.3°C during the vegetative growth period (Mijic´ et al, 2012). The majority of the resistant PIs were received from Hungary (14) and Spain (9).…”

Section: Resultsmentioning

confidence: 99%

“…Interestingly, nine of these 13 PIs were landraces received from Hungary, possibly indicating that a "hotspot" of disease-resistant germplasm developed there. Hungary is situated in the temperate zone and is affected by three large climatic zones: the Atlantic, continental, and Mediterranean (Anonymous, 2008 and mean temperature ranged between 16.8 and 17.3°C during the vegetative growth period (Mijic´ et al, 2012). This temperature range is ideal for both S. sclerotiorum and P. helianthi, while the splashing rain helps disseminate spores and initiate the infection process (Gulya et al, 1997).…”

Section: Resultsmentioning

confidence: 99%

Sources of Resistance to Sunflower Diseasesin a Global Collection of Domesticated USDA Plant Introductions

et al. 2014

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Basal stalk rot (BSR) and head rot (HR) caused by Sclerotinia sclerotiorum (Lib.) de Bary are traditionally major diseases of sunflower (Helianthus annuus L.) in the United States, while Phomopsis stem canker (PSC) caused by Phomopsis helianthi Munt.‐Cvet. et al. has become increasingly damaging in recent years. Host resistance is the most effective approach to managing these diseases. Here we report new sources of resistance to these diseases identified in the USDA sunflower Plant Introduction (PI) collection. A total of 260 PIs, including USDA‐ARS–developed inbred lines, were tested in multiple years and locations of North Dakota, South Dakota, and Minnesota. The effects of genotype (G), environment (E), and G × E interaction were significant. Broad sense heritability (H2) for BSR, HR, and PSC were estimated as 0.70, 0.79, and 0.83, respectively, reflecting a large genetic variation in the panel for these diseases. A total of 6.2, 29.6, and 36.9% of the genotypes showed significantly higher resistance than checks against BSR, HR, and PSC, respectively. Two PIs, 531389 and 531366, were significantly more resistant than checks against all three diseases. Head rot disease incidence was positively correlated with PSC (r = 0.52, p < 0.0001), while it was negatively correlated with BSR (r = −0.16, p < 0.05). A total of 13 PIs, mostly from Hungary, exhibited dual resistance against HR and PSC. Overall, sufficient variation exists among germplasm sources to facilitate further resistance breeding of sunflower against BSR, HR, and PSC diseases.

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“…The level of varieties' and hybrids' biological potential realization depends on both-growing technology and climatic conditions of a particular year and their interaction [21] [22] [23] [24]. Sunflower yield is determined by several factors, among which the role of hybrid and plants' standing density are among the determinants [25] [26].…”

Section: Morphological Features Of Plants Sunflower Yield Depending On Plants' Densitymentioning

confidence: 99%

Morphological Features of Plants and Yield of Sunflower Hybrids Cultivated in the Northern Part of the Forest-Steppe of Ukraine

Kalenska¹,

Ryzhenko²,

Novytska³

et al. 2020

AJPS

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In Ukraine, a sunflower is the main oil crop from which more than 90% of vegetable fats are produced. An increase in production is due to the expansion of cultivation area, which necessitates research on sunflower hybrids adaptability in the northern regions of Ukraine, where in recent decades, there has been a significant change of weather conditions and which may be favorable for its cultivation. The research was carried out in the Northern part of the Forest-Steppe of Ukraine on light loam chernozems. Reaction to growing conditions of four hybrids was studied by establishing the stability and plasticity of hybrids in terms of yield formation due to changes in morphological characteristics of plants. Yield potential realization is high enough, which is provided by sufficient amounts of positive, active, effective temperatures and precipitation. Calculation of the coefficients of plasticity and stability allows identifying stable sunflower hybrids, hybrids with a high level of plasticity, and recommending them to production. The yield of early-maturing hybrid Ukrainskyi F1 increases rectilinearly with plant density increasing (r = 0.977 -0.998), while hybrids P63LL06 (r = 0.651 -0.882); NK Ferti (r = 0.589 -0.846), and NK Brio (r = 0.689 -0.804) form a higher yield at standing densities up to 60 thousand plants per hectare, and with further thickening, the yield decreases. With the thickening of sowings, the height of all hybrids plants increases (r = 0.97 -0.99), and there is a decrease in the number of seeds per anthode, and the weight of 1000 seeds. Sunflower hybrids can be divided into the groups according to the peculiarities of yield formation due to morphological features: 1) yield increases only due to sowings' thickening-Ukrainskyi F1; 2) combined efficiency-increasing sowings' density to 60 thousand plants/ha and generative organs formation-NCKBrio; 3

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Impact of weather conditions on variability in sunflower yield over years in eastern parts of Croatia and Hungary

Cited by 11 publications

References 1 publication

Climate Variability and Change Affect Crops Yield under Rainfed Conditions: A Case Study in Gedaref State, Sudan

Climate Variability and Change Affect Crops Yield under Rainfed Conditions: A Case Study in Gedaref State, Sudan

Sources of Resistance to Sunflower Diseasesin a Global Collection of Domesticated USDA Plant Introductions

Morphological Features of Plants and Yield of Sunflower Hybrids Cultivated in the Northern Part of the Forest-Steppe of Ukraine

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