Effects of high nitrogen application on the dry matter yield, nitrogen content and nitrate-N concentration of sugarcane(Plant Nutrition)

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概要

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• In Japan a high dependency on imported food, particularly livestock feed, has resulted in the accumulation of large amounts of nutrients, especially nitrogen, in the form of livestock manure. Cultivating feed crops that can take up a large amount of N would not only mitigate the water pollution caused by the nitrate leached from the livestock sector, but would also improve food self sufficiency. Sugarcane (Saccharum spp.) is considered to be a promising candidate in this respect. Two field experiments were conducted in 2006 and 2007 in Kagawa to evaluate the dry matter (DM) yield, N content and nitrate-N concentration of sugarcane under high N input. The first experiment was designed as a factorial experiment with two factors, varieties/lines/clones and N rates set at two levels, 30g m^<-2> year^<-1> and 60g m^<-1> year^<-1>, with three replicates. In the second experiment, 30 varieties/lines/clones of sugarcane and related genera as well as control crops were planted (n=2) and a single N rate of 45g m^<-2> year^<-1> was applied. Some varieties/lines of sugarcane produced an above-ground DM yield greater than 4.0kg m^<-2> and contained more than 40g m^<-2> of N in the above-ground part. Erianthus clones, IK76-126 and IJ76-349 tended to accumulate nitrate-N when high rates of N were applied. No sugarcane varieties out of the 28 varieties/lines tested in the present study accumulated nitrate-N beyond the allowed limit for feed use, irrespective of the N rates tested in the experiments. The ability of sugarcane not to accumulate nitrate-N under conditions of high N input was considered to be an advantage in double-purpose cultivation; that is, sugarcane can be used as a feed and cleaning crop.

• 社団法人日本土壌肥料学会の論文

著者

• Ishikawa Shoko

  National Agricultural Research Center For Western Region National Agriculture And Food Research Orga

• ANDO Shotaro

  National Institute of Livestock and Grassland Science

• Sakaigaichi Takeo

  Sugarcane Experimental Station In Tanegashima National Agricultural Research Center For Kyushu Okina

• Matsuoka Makoto

  Sugarcane Experimental Station In Tanegashima National Agricultural Research Center For Kyushu Okina

• Ando Shotaro

  National Institute Of Livestock And Grassland Science National Agriculture And Food Research Organiz

• TERAJIMA Yoshifumi

  Sugarcane Experimental Station in Tanegashima, National Agricultural Research Center for Kyushu Okin

• TERAJIMA Yoshifumi

  National Agricultural Research Center for Kyushu-Okinawa region

関連論文

• Detection of nifH Sequences in Sugarcane (Saccharum officinarum L.) and Pineapple (Ananas comosus [L.] Merr.) (Soil Biology)
• Effects of vegetation and cultivation on δ^C values of soil organic carbon and estimation of its turnover in Asian tropics : A case study in Thailand(Environment)
• Effects of high nitrogen application on the dry matter yield, nitrogen content and nitrate-N concentration of sugarcane(Plant Nutrition)
• Seasonal variations in natural ^C abundances in C_3 and C_4 plants collected in Thailand and the Philippines(Plant Nutrition)
• Chemical composition and in situ degradability of two varieties of sugarcane at different growth stages in subtropical Japan
• Characterization of Nitrogen Fixing Bacteria isolated from Thailand, Indonesia and Japan in term of plant growth promotion effects and ARA production abilities(The annual Meeting of the Society in 2011)
• 8-21 Genetic and Physiological Characterization of Nitrogen Fixing Bacteria isolated from Indonesia and Japan
• Overwintering Ability and Dry Matter Production of Sugarcane Hybrids and Relatives in the Kanto Region of Japan
• Dry Matter Productivity of High Biomass Sugarcane in Upland and Paddy Fields in the Kanto Region of Japan

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