Double row spacing and drip irrigation as technical options in energy sorghum management

  • Neri Roncucci Istituto di Scienza della Vita, Scuola Superiore Sant’Anna, Pisa, Italy.
  • Federico Triana Istituto di Scienza della Vita, Scuola Superiore Sant’Anna, Pisa, Italy.
  • Cristiano Tozzini Istituto di Scienza della Vita, Scuola Superiore Sant’Anna, Pisa, Italy.
  • Enrico Bonari Istituto di Scienza della Vita, Scuola Superiore Sant’Anna, Pisa; Centro di Ricerca Interuniversitario Biomasse da Energia, San Piero a Grado (Pisa), Italy.
  • Giorgio Ragaglini | g.ragaglini@sssup.it Istituto di Scienza della Vita, Scuola Superiore Sant’Anna, Pisa, Italy.

Abstract

The effect of two row spacing configurations and four water supply levels was investigated on sweet and fibre sorghum in Central Italy for two consecutive years. Results highlighted the influence of both irrigation and row spatial configuration on crop productivity. Indeed, several studies have pointed out the positive response of sorghum to irrigation in Mediterranean climate, as in this environment water stress represents one of the main limiting factors on crop productivity. On the other hand, few attempts have been made to explore the role of row spacing on energy sorghum productivity. Results outlined an average increase in sorghum dry biomass yield ranging from +23% to +79% at variable rates of water supply as compared to rainfed control. The positive effect of irrigation was also observed on leaf area index and radiation use efficiency. Moreover, we observed a crop yield increase, from 9% to 20%, under double row spacing compared to the standard planting pattern (i.e. single row spacing). Finally, it was confirmed the efficient use of water by sorghum and the great ability of sorghum to increase its biomass yield in response to increasing volumes of water supplied. Therefore, this work suggests how row spacing configuration and drip irrigation could be feasible technical options to increase sorghum biomass yields in Mediterranean environments. These techniques should be experienced by farmers towards a sustainable intensification of current cropping systems.

Downloads

Download data is not yet available.
Published
2014-02-25
Section
Original Articles
Keywords:
double-cropping, Mediterranean environment, plant spatial distribution, twin row, water agronomic efficiency.
Statistics
Abstract views: 2588

PDF: 552
HTML: 891
Share it

PlumX Metrics

PlumX Metrics provide insights into the ways people interact with individual pieces of research output (articles, conference proceedings, book chapters, and many more) in the online environment. Examples include, when research is mentioned in the news or is tweeted about. Collectively known as PlumX Metrics, these metrics are divided into five categories to help make sense of the huge amounts of data involved and to enable analysis by comparing like with like.

How to Cite
Roncucci, N., Triana, F., Tozzini, C., Bonari, E., & Ragaglini, G. (2014). Double row spacing and drip irrigation as technical options in energy sorghum management. Italian Journal of Agronomy, 9(1), 25-32. https://doi.org/10.4081/ija.2014.563