Nitrogen balance of crop production in Ukraine

Moklyachuk, L.; Furdychko, O.; Mokliachuk, Oleksandr; Draga, Maryana

doi:10.1016/j.jenvman.2019.05.108

Cited by 10 publications

(4 citation statements)

References 14 publications

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“…If negative N balances occur, N leach and N denit were set to 0. These situations were attributed to statistical biases that affected the distribution of inorganic fertilisers in 1999 (Serra et al, 2019) and/or soil N depletion (Moklyachuk et al, 2019;Özbek and Leip, 2015). Table 1 summarizes data inputs and sources as well as the methods employed for each environmental N loss.…”

Section: Estimating Leaching From Nitrogen Balancesmentioning

confidence: 99%

Development of a groundwater contamination index based on the agricultural hazard and aquifer vulnerability: Application to Portugal

Serra¹,

Cameira

Cordovil³

et al. 2021

Science of The Total Environment

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Section: Estimating Leaching From Nitrogen Balancesmentioning

confidence: 99%

Development of a groundwater contamination index based on the agricultural hazard and aquifer vulnerability: Application to Portugal

Serra¹,

Cameira

Cordovil³

et al. 2021

Science of The Total Environment

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“…At first sight the scheme of maximum use of sunflower in crop rotation is not threatening, but this approach is certainly insecure in terms of increasing effect of droughts and spread of specific diseases and pests (MOKLYACHUK et al, 2019).…”

Section: Independent Journal Of Management and Production (Ijmandp)mentioning

confidence: 99%

Economic justification for the use of biological fungicides and plant growth stimulants for growing sunflower

Domaratskyi

Капліна

Kozlova

et al. 2020

Ind. Jour. Manag. & Prod.

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The study presents economic substantiation of applying environmentally friendly plant growth stimulators in combination with biological fungicides in sunflower production under conditions of the South of Ukraine. The field research was conducted at Kherson State Agricultural University (Ukraine) in 2017 – 2019 under conditions of dark chestnut alkaline soils with the humus content of 2.5% in the plough layer. The results of the three-year field research prove that the net profit reached the absolute maximum in the variant of the hybrid LG 5580 under conditions of applying the bio-fungicide Fitotsyd-r with the stimulator Ahrostymulin at the stage of budding and amounted to $1081/ha. In this case the cost price was the least – $141.6/ha, and the profitability level was the highest – 196%. In the areas sown with the hybrid Tunca the variant with the combination of Fitotsyd-r and the growth stimulator Ahrostymulin also provided a positive result, but it yielded a little to the combination of the preparations Fitosporyn / Ahrostymulin: the net profit was $579.7/ha, the price cost made $203.4/ha and the profitability was 106 %.On the whole this analysis makes it possible to maintain that additional costs related to purchasing and applying fertlizers are totally compensated owing to the cost of an increase in the yield.

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“…Although BC is chemically very stable, it is still subject to aging changes through chemical reactions, water erosion, and microbial decomposition, especially when the residence time of BC in the soil is prolonged [ 16 , 17 ]. The properties of BC, such as pH, surface elemental composition, and non-aromatic structure, are significantly changed along with the aging process [ 18 , 19 ]. Apparently, the moisture status of paddy soil varies significantly during the growth cycle of rice and wheat, and the unique alternating wet and dry (aerobic–anaerobic) water management leads to the consequent different changes in the nature and function of the BC added to the paddy soil [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Biochar Applied in Either Rice or Wheat Seasons on the Production and Quality of Wheat and Nutrient Status in Paddy Profiles

Chen,

Liu,

Sun

et al. 2023

Plants

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In a rice–wheat rotation system, biochar (BC) applied in different crop seasons undergoes contrast property changes in the soil. However, it is unclear how aged BC affects the production and quality of wheat and the nutrent status in a soil profile. In the present soil column experiment, the effects of no nitrogen (N) fertilizer and BC addition (control), N fertilizer (N420) and BC (5 t ha−1) applied at rice [N420 + BC(R)], or wheat [N420 + BC(W)] seasons at a same rate of N fertilizer (420 kg ha−1 yr−1) on yield and quality of wheat as well as the nutrient contents of soil profiles (0–5, 5–10, 10–20, 20–30, 30–40, and 40–50 cm) were observed. The results showed that N420 + BC(W) significantly reduced NH4+-N content in 5–10 and 10–20 cm soils by 62.1% and 36.2%, respectively, compared with N420. In addition, N420 + BC(W) significantly reduced NO3−-N contents by 17.8% and 40.4% in 0–5 and 20–30 cm profiles, respectively, but N420 + BC(R) slightly increased them. The BC applied in wheat season significantly increased the 0–5 and 40–50 cm soil total N contents (24.0% and 48.1%), and enhanced the 30–40 and 40–50 cm soil-available phosphorus contents (48.2 and 35.75%) as well as improved the 10–20 and 20–30 cm soil-available potassium content (38.1% and 57.5%). Overall, our results suggest that N420 + BC(W) had stronger improving effects on soil fertility than N420 + BC(R). Compared to N420, there was a significant 5.9% increase in wheat grain yield, but no change in total amino acids in wheat kernels in N420 + BC(W). Considering the responses of soil profile nutrient contents as well as wheat yield and quality to BC application in different crop seasons, it is more appropriate to apply BC in wheat season. Our results could provide a scientific basis for the ideal time to amend BC into the rice–wheat rotation system, in order to achieve more benefits of BC on crop production and soil fertility.

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Nitrogen balance of crop production in Ukraine

Cited by 10 publications

References 14 publications

Development of a groundwater contamination index based on the agricultural hazard and aquifer vulnerability: Application to Portugal

Development of a groundwater contamination index based on the agricultural hazard and aquifer vulnerability: Application to Portugal

Economic justification for the use of biological fungicides and plant growth stimulants for growing sunflower

Effects of Biochar Applied in Either Rice or Wheat Seasons on the Production and Quality of Wheat and Nutrient Status in Paddy Profiles

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