Effect of compost and topdressing of organic liquid fertilizer on yield and quality of tomato [Lycopersicon esculentum]
2007
Nakano, A.(National Inst. of Vegetable and Tea Science, Taketoyo, Aichi (Japan)) | Uehara, Y.
Increase of manure application (2.1t/10a to 16.8t/10a) and top dressing by CSL (Corn steep liquor) increased the nitrate concentration in leaves, but did not increase the total yields of tomato. CSL top dressing decreased Brix sugar content by 0.4% compared to only manure applications. In contrast, CSL top dressing increased nitrogen and amino acid contents compared to only manure applications. From the estimation by a two source model using deltasup(15)N value, 55 to 84% of the nitrogen of fruits was easily taken up from CSL, and increased nitrogen and amino acid contents of tomato fruits. However, high dose application of manure was not able to increase the fruit nitrogen content to ordinal chemical fertilizer application level (20mg/g) ; CSL top dressing was able to reach the same level of nitrogen (amino acid) content in fruits from chemical fertilizer applications.
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