Analysis of soil nutrients in cucumber cultivating greenhouses in Nishimikawa district [Aichi, Japan]
1999
Seki, M. (Aichi-ken. Agricultural Research Center, Nagakute (Japan)) | Yamada, R. | Kinoshita, T.
In order to analyze the soil nutrients in cucumber cultivating greenhouses in Nishimikawa district, enqute of soil managements and investigation of soil nutrients were carried out. The pH, total carbon content and base balance of soils were within optimum range generally. On the other hand, in the case of water-soluble nitrate nitrogen, exchangeable bases and available phosphoric acid, over half the number reached each excess accumulation range. Multiple regression analysis showed that the contribution of total carbon content to cation exchange capacity have been 81.4% and its of available phosphoric acid could not be disregarded. Farmer's ratio of above 3t/10a of organic materials was 67.5%. But no difference was recognized in relation to application amount of organic materials and accumulation of total carbon. Anion accumulation of water-soluble nitrate nitrogen, sulphate and chlorine increased by application of large amount of cattle feces compost only. After culture farmer's ratio of submerging treatment including every other year was 72.7%. But in spite of the treatment the runoff of accumulated soil nutrients did not observed
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