Crop photosynthetic capacity of grain sorghum (Sorghum bicolor (L.) Moench) depending on sowing time and planting depth




productivity of photosynthesis, growth phase, leaf surface area


Purpose. To establish the optimal seeding time and depth of ‘Dniprovskyi 39’ and ‘Vinets’ sorghum varieties, to prove their effect on the crop photosynthetic capacity in the Right-Bank Forest-Steppe of Ukraine.

Methods. Field, laboratory, comparative, analytical, generalizing, mathematical and statistical.

Results. It was proved that the best results of crop photosynthetic capacity of sorghum were obtained by sowing in the first decade of May (the second sowing period) at a seeding depth of 4–6 cm. Accordingly, the leaf surface area in these variants reached its maximum during the “panicle-blooming” period and equated 36.13–38.81 thousand m2/ha for the ‘Dniprovskyi 39’ variety and 34.23–36.91 thousand m2/ha for the ‘Vinets’ variety. By sowing seeds in the third decade of April (the first sowing period) at the seedining depth values described above the leaf surface area of the varieties was slightly smaller and amounted to 29.56–31.20 thousand m2/ha for the ‘Dniprovskyi 39’ variety and 27.76–29.40 thousand m2/ha for the ‘Vinets’ variety. By sowing seeds in the second decade of May (the third sowing period), the leaf surface area was 30.68–32.92 thousand m2/ha for the ‘Dniprovskyi 39’ variety and 29.08–31.32 thousand m2/ha for the ‘Vinets’ variety. The highest photosynthetic potential was obtained for sorghum plants in the second sowing period at the seeding depth of 4–6 cm and was 1.27 and 1.34 million m2/ha for the ‘Dniprovskyi 39’ variety and 1.16 and 1.22 million m2/ha for the variety ‘Vinets’. In the first sowing period, this indicator was slightly lower and amounted to 1.18 and 1.23 million m2/ha for the ‘Dniprovskyi 39’ variety and 0.98 and 1.02 million m2/ha for the ‘Vinets’ variety respectively. In the third sowing period, it was the smallest one and equated 1.09 and 1.13 million m2/ha for the ‘Dniprovskyi 39’ variety, and 0.88 and 0.93 million m2/ha for the ‘Vinets’ variety at the optimal seeding depth. The photosynthetic potential was lower at the seeding depth of 2 and 8 cm, which is explained by the different soil and climatic parameters during a certain period of sorghum plant vegetation. The highest value of the photosynthetic capacity net indicator was obtained by sowing seeds at the optimal time and the optimal seeding depth and it equated 3.84–4.02 g/m2 per day for the ‘Dniprovskyi 39’ variety and 3.79 – 3.98 g/m2 per day for the ‘Vinets’ variety.

Conclusions. It has been established that the sorghum plants had better vegetation and formed photosynthetic capacity by sowing seeds in the first decade of May at the planting depth of 4–6 cm, which we recommend for growing this crop in the Right-Bank Forest-Steppe of Ukraine.


Download data is not yet available.

Author Biography

Л. А. Правдива, Institute of Bioenergy Crops and Sugar Beet, NAAS of Ukraine

Pravdyva L. A.


Dossou-Aminon, I., Loko, Y. L., Adjatin, A., Dansi, A., Elangovan, M., Chaudhary, P., Vodouhè, R., & Sanni, A. (2014). Diversity, genetic erosion and farmer’s preference of sorghum varieties (Sorghum bicolor (L.) Moench) growing in North-Eastern Benin. Int. J. Curr. Microbiol. Appl. Sci., 3(10), 531–552.

Kimber, C. T. (2003). Origin of domesticated sorghum and its early diffusion to India and China. In C. W. Smith, R. A. Fre­deriksen (Eds.), Sorghum Origin, History, Technology and Production (pp. 3–98). New York, NY: John Wiley & Sons.

Dossou-Aminon, I., Loko, Y. L., Adjatin, A., Eben-Ezer, B., Ewédjè, K., Dansi, A., … Akpagana, K. (2015). Genetic Divergence in Northern Benin Sorghum (Sorghum bicolor L. Moench) Landraces as Revealed by Agromorphological Traits and Selection of Candidate Genotypes. Sci. World J., 2015, Art. ID 916476. doi: 10.1155/2015/916476

Orr, A., Mwema, C., Gierend, A., & Nedumaran, S. (2016). Sorghum and Millets in Eastern and Southern Africa: Facts, Trends and Outlook. Working Paper Series No. 62. ICRISAT Research Program, Markets, Institutions and Policies. Telangana, India : International Crops Research Institute for the Semi-Arid Tro­pics. doi: 10.13140/RG.2.1.5154.5205

Ratnavathi, C. V., Komala, V. V., Kumar, B. S., Das, I. K., & Patil, J. V. (2012). Natural occurrence of aflatoxin B1 in sorghum grown in different geographical regions of India. J. Sci. Food Agric., 92(12), 2416–2420. doi: 10.1002/jsfa.5646

Saleh, A. S. M., Zhang, Q., Chen, J., & Shen, Q. (2013). Millet grains: nutritional quality, processing, and potential health benefits. Compr. Rev. Food Sci. F., 12(3), 281–295. doi: 10.1111/1541-4337.12012

Kumar, A. A., Anuradha, K., Ramaiah, B., Grando, S., Rattunde, H. F., W., Virk, P., & Pfeiffer, W. H. (2015). Recent advances in sorghum biofortification research. Plant Breed. Rev., 39, 89–124. doi: 10.1002/9781119107743.ch03

Andrzejewski, B., Eggleston, G., Lingle, S., & Powell, R. (2013). Development of a sweet sorghum juice clarification method in the manufacture of industrial feed stocks for value-added fermentation products. Ind. Crops Prod., 44, 77–87. doi: 10.1016/j.indcrop.2012.10.028

Abdelhalim, T. S., Kamal, N. M., & Amro, B. H. (2019). Nutritional potential of wild sorghum: Grain quality of Sudanese wild sorghum genotypes (Sorghum bicolor L. Moench). Food Sci. Nutr., 7(4), 1529–1539. doi: 10.1002/fsn3.1002

Kukh, M. V., & Yalanskyi, O. V. (2011). Prospects for growing Sorghum grain in the south-western part of the Forest-Steppe of Ukraine. Zb. nauk. pracʹ Podìlʹsʹkogo derž. agrar.-teh. unìv. [Podilian State Agrarian and Engineering University Collection], 19, 112–116. [in Ukrainian]

Hryniuk, I. P. (2013). Photosynthetic productivity of sorghum crops in the Right-Bank Forest-Steppe of Ukraine. Naukovij vìsnik NUBIP Ukraïni. Serìâ Agronomìâ [Scientific Herald of NULES of Ukraine. Series: Agronomy], 183(2), 104–109. [in Ukrainian]

Herasymenko, L. A. (2014). Influence of seeding time and depth on the photosynthetic productivity of sweet sorghum (Sorghum saccharatum (L.) Pers.) plantings. Plant Var. Stud. Prot., 4, 73–76. [in Ukrainian]

Vasylenko, R. M. (2018). Photosynthetic productivity of grain sorghum depending on humidification conditions in the south of Ukraine. Vìsn. agrar. nauki Pričornomor’â [Ukrainian Black Sea region Agrarian Science], 2, 46–50. [in Ukrainian]

Boiko, M. O. (2017). Formation of the assimilation apparatus of grain sorghum hybrids depending on sowing dates and crop density. Tavrìjsʹkij naukovij vìsnik [Tavria Scientific Bulletin], 97, 18–22. [in Ukrainian]

Synyagin, I. I. (1975). Ploshchad pitaniya rasteniy [Plant nutri­tion area]. Moscow: Rosselkhozizdat. [in Russian]

Nychyporovych, A. A. (1982). Fiziologiya fotosinteza i produk­tiv­nost’ rasteniy. Fiziologiya fotosinteza [Physiology of photo­synthesis and plant productivity. Physiology of photosynthesis]. Mos­cow: Nauka. [in Russian]

Naukovo-metodychni rekomendatsii. Kataloh sortiv ta hibrydiv laboratorii selektsii sorhovykh kultur [Scientific and methodical recommendations. Catalog of varieties and hybrids of the laboratory for selection of sorghum crops]. (2017). Dnipro: Institute of Grain Crops of NAAS of Ukraine. [in Ukrainian]

Ovchynnykov, N. N., & Shykhanova, N. M. (1972). Fotosyntez [Photosynthesis]. Moscow: Prosveshchenie. [in Russian]

Ovsiienko, I. A. (2015). Features of sorghum grain yield for­mation depending on sowing dates. Sìlʹsʹke gospodarstvo ta lìsìvnictvo [Agriculture and Forestry], 1, 21–28. [in Uk­rainian]

Boiko, M. O. (2017). Ahrobiolohichne obgruntuvannia elementiv tekhnolohii vyroshchuvannia hibrydiv sorho zernovoho v pivdennomu Stepu Ukrainy [Agrobiological substantiation of elements of technology of cultivation of hybrids of sorghum grain in the southern Steppe of Ukraine] (Cand. Agric. Sci. Diss.). Kherson State Agrarian University, Kherson, Ukraine. [in Ukrainian]

How to Cite

Правдива, Л. А. (2020). Crop photosynthetic capacity of grain sorghum (Sorghum bicolor (L.) Moench) depending on sowing time and planting depth. Plant Varieties Studying and Protection, 16(2), 199–206.