Summary
A field trial was set up to examine the effect of green manuring, blue-green algae, and neem-cake-coated urea on a rice crop. Summer green manuring using Sesbania aculeata increased the crop yield. Inoculation of blue-green algae increased the rice grain yield when 60 kg N ha-1 was applied as prilled urea, but the increase in grain yield was greater when 60 kg N ha-1 was applied as neem-cake-coated urea. The results of the present study show that applications of green manure, neem-cake-coated urea, and blue-green algae are complementary and that the three treatments can be used together in the rice ecosystem. The green manure and the fertilizer treatments had no effect on the algal flora of the soil.
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Singh, S., Prasad, R., Singh, B.V. et al. Effect of green manuring, blue-green algae and neem-cake-coated urea on wetland rice (Oryza sativa L.). Biol Fertil Soils 9, 235–238 (1990). https://doi.org/10.1007/BF00336232
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DOI: https://doi.org/10.1007/BF00336232