Development of the methodology of estimating of agricultural crop yield potential with consideration of climate and agrophytotechnology impact

V. P. Dmytrenko; L. P. Odnolyetok; О. О. Kryvoshein; A. V. Krukivska

doi:10.31481/uhmj.20.2017.06

V. P. Dmytrenko
L. P. Odnolyetok
О. О. Kryvoshein
A. V. Krukivska

DOI: https://doi.org/10.31481/uhmj.20.2017.06

Keywords: conception, model, climate, agrophytotechnology, winter wheat, coefficient of productivity, economic maximum of crop yield

Abstract

In the paper it is outlined the main methodological positions and the results of the approbation of new approaches to the integrated assessment of the potential of crop yields.

There are considered the theoretical foundations of a joint assessment of the biological, ecological and anthropogenic components of the yield potential of agricultural crops which are based on the ecosystem concept and the mathematical model "Weather-Crop Yield" developed by V. P. Dmytrenko. In the considered approaches the peculiarities of the influence of various environmental factors on the formation of crop yields are determined by indicators of various potential yields - general, climatic and trend (agrotechnological). Each type of yield potential can be used for evaluation of the effectiveness of the conditions of field crop growing for each factor taken into account, as well as the optimality criterion in the agrometeorological adaptation strategies and also as a criterion for the degree of sensitivity of the yield level to the conditions of crops cultivating.

The developed approaches are tested on the example of estimation of long-term dynamics of winter wheat yield potential in Ukraine. According to the results of the evaluation of different factors of the potential of the productivity of winter wheat for the periods 1961-1990 and 1991-2010 the dominant importance of organizational and technological processes in comparison with the contribution of changes of agroclimatic conditions has been determined in both periods.

References

1. Dmitrenko V. P. Mathematical model of productivity of agricultural crops. Trudy UkrNIGMI - Works of UHMI, 1973, vol. 122, pp. 3-13. (In Russian)

2. Dmitrenko V. P. About the models of crop yields calculation with consideration of hydrometeorological factors. Meteorologiya i gidrologiya – Meteorology and Hydrology, 1971, № 5, pp. 84-91. (In Russian)

3. Dmitrenko V. P., Berdnik A. A. Statistical model of the geographical maximum of crop yields. Trudy UkrNIGMI - Works of UHMI, 1974, vol. 131, pp. 11-23. (In Russian)

4. Tooming Kh. G. Ekologicheskiye printsipy maksimalnoy produktivnosti posevov [Ecological principles of maximum crop productivity]. Leningrad: Hydrometeoizdat, 1984. 264 p.

5. Tooming Kh. G. Method of standard yields. Vestn. s.-kh. nauki - Proceedings of agricultural science, 1982, no. 3 (306), pp. 89-94. (In Russian)

6. Dmytrenko V. P. Pohoda, klimat i urozhay pol'ovykh kul'tur [Weather, climate and crop yields]. Kyiv: Nika-Tsentr, 2010. 620 p.

7. Dmytrenko V. P. Principles and means of determination of potential crop yields on ecological and geographical bases. Nauk. pratsi UkrNDHMI - Scientific Works of UHMI, 2005, vol. 254, pp. 9-29. (In Ukrainian)

8. Investigation of the influence of regional climatic changes in Ukraine on the properties of agroecosystems and mechanisms of their adaptation for intermittent variability of agrometeorological conditions and adverse events. Report about bresearch work, № 01124004652, 2012 (In Ukrainian, unpublished)

9. Antomonov Yu. G. Modelirovaniye biologicheskikh sistem. Spravochnik [Modeling of biological systems. Directory]. Kiev: Naukova dumka, 1977, 260 p.

10. Yuzbashev M. M., Manellya A. I. Statisticheskiy analiz tendentsiy i koleblenosti [Statistical analysis of trends and fluctuations]. Moscow: Finance and statistics, 1983, 208 p.