Affiliation:
1. Agricultural Research Centre of Extremadura (CICYTEX) , Guadajira ( Badajoz ), Spain
Abstract
Abstract
Rice straw remains almost unutilised in the majority of cases and is usually burned. Data on rice residue production under European conditions are extremely limited. A detailed assessment of rice biomass yield, partitioning and straw collection was carried out in Spain. Eleven commercial rice varieties were evaluated in 2015, and two baling trials were performed in 2014 and 2015. The average straw yield was 9.7 t·ha−1. Straw yield, biomass partitioning indices and fibre composition varied significantly according to rice variety. Straw to grain ratio and harvest index were 1.00 and 0.50 on average for rough grain, and 1.25 and 0.41 for husked grain. Biomass partitioning indices significantly correlated with grain yield. Mean content of cellulose, hemicellulose, lignin and ash of rice straw was 32.5%, 19.8%, 6.5% and 13.7%, respectively. Straw amount of less than 3.0 t·ha−1 can be collected during the baling trials. Rice straw could represent an eco-friendly source of lignocellulosic biomass in Europe, however, in order to achieve this, baling machine improvements and special crop management should be carried out.
Subject
Mechanical Engineering,Waste Management and Disposal,Agronomy and Crop Science
Reference35 articles.
1. ABOU-EL-ENIN, O. H. – FADE, J. G. – MACKILL, D. J. 1999. Differences in chemical composition and fibre digestion of rice straw with, and without, anhydrous ammonia from 53 rice varieties. In Animal Feed Science and Technology, vol. 79, pp. 129–136.
2. ABRAHAM, A. – MATHEW, A. K. – SINDHU, R. – PANDEY, A. – BINOD, P. 2016. Potential of rice straw for bio-refining: An overview. In Bioresource Technology, vol. 215, pp. 29–36.
3. AMANULLAH, J. – INAMULLAH, Z. 2016. Dry matter partitioning and harvest index differ in rice genotypes with variable rates of phosphorus and zinc nutrition. In Rice Science, vol. 23, no. 2, pp. 78–87.
4. BAKKER, R. R. C. – ELBERSEN, H. W. – POPPENS, R. P. – LESSCHEN, J. P. 2013. Rice straw and wheat straw. Potential feedstocks for the biobased economy. Netherlands Agency.
5. BELOEV, I. – GABROVSKA-EVSTATIEVA, K. – EVSTATIEV, B. 2017. Compensation of CO2 emissions from petrol stations with photovoltaic parks: Cost-benefit and risk analysis. In Acta Technologica Agriculturae, vol. 20, no. 4, pp. 85–90.