Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2019, Vol. 40 ›› Issue (3): 417-424.DOI: 10.3969/j.issn.1000-2561.2019.03.001

• Crop Culture and Nutrition, Genetic Breeding •     Next Articles

The Effect of Increasing Bio-organic Fertilizer on the Yield and Quality of Edible-cassava

CHEN Huixian1,CAO Sheng1,2,*(),YAN Huabing1,XIE Xiangyu1,SHANG Xiaohong1   

  1. 1. Cash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, Guangxi 530007, China
    2. Guangxi Key Lab of Crop Genetic Improvement and Biotechnology, Nanning, Guangxi 530007, China
  • Received:2018-08-09 Revised:2018-11-01 Online:2019-03-15 Published:2019-03-15
  • Contact: CAO Sheng


A randomized block test with three experimental treatments using no bio-organic fertilizer as CK was undertaken to reveal change of growth situation, yield and quality of edible cassava in different fertilization mode, and to provide a theoretical foundation for high yield and quality cultivation. Results showed that applying bio-organic fertilizer could increase the plant height, stem diameter, SPAD in root formative period, the photosynthetic rate in root formative period and root expand period, and it could increase yield by improving tuberous root thickness and tuberous root number. It could also promote the content of starch, protein, dry matter, soluble sugar, the ratio of branch/chain starch, and the comprehensive quality of roots. However, the effect on SPAD value, potato length, harvest index and crude fiber of tuber was small. In addition, the correlation analysis results showed that the total fertilization amount of biological organic fertilizer was positively correlated with the yield and quality, and most of the correlation coefficients reached significant or extremely significant level. In summary, the conclusion is drawn that the application of bio-organic fertilizer can improve the photosynthesis of cassava to promote its growth, increase the yield of tubers, and effectively improve the quality of tubers. The optimal fertilization way is increasing bio-organic fertilizer application in the basal and seedling, and the rate of fertilizer application is respectively 3000 kg/hm 2 and 1500 kg/hm 2.

Key words: edible-cassava, bio-organic fertilizer, yield, quality