Production of fresh and dry biomass from Sudan grass (Sorghum sudanense (Piper.) Stapf.) under irrigated and non-irrigated conditions

Radost Petrova, В. Harizanova-Petrova

Abstract: In order to determine the biomass yield of Sudan grass (Sorghum sudanense (Piper.) Stapf.) under irrigated and non-irrigated conditions, a field experiment was conducted in the period 2017-2019. The experiment was carried out in an experimental field of the Agricultural University - Plovdiv, on an alluvial-meadow, former swampy ground. The Sudan grass variety Vercors was tested under the following variants: 1) under non-irrigated conditions; 2) irrigation at pre-irrigation humidity 75% of FC, valid for the layer 0-60 cm. The experiment was set up according to the block method in 4 replicates and was irrigated by gravity. Depending on the nature of the year, the yield of fresh biomass under non-irrigated conditions varies from 857.8 kg/da to 11408.9 kg/da. In extreme years, irrigation increases it more than 9 times, and the same varies from 7749.8 kg/da to 18915.5 kg/da.

Keywords: biomass; irrigation; sudan grass; yield

Citation: Petrova, R., & Harizanova-Petrova, B. (2024). Production of fresh and dry biomass from Sudan grass (Sorghum sudanense (Piper.) Stapf.) under irrigated and non-irrigated conditions. Bulgarian Journal of Crop Science, 61(6) 52-59 (Bg).

DOI: https://doi.org/10.61308/HZUF1414

Date published: 2024-12-19