Forcing culture of 'Black beauty'-type eggplant [Solanum melongena] 'Kurowashi' under near-ultraviolet radiation absorbing vinyl film
2006
Hshimoto, I.(Kochi-ken. Agricultural Research Center, Nankoku (Japan))
In a forcing culture of the 'Black Beauty'- type eggplant 'Kurowashi' (Solanum melongena var. esculentum (L.) Nees), comparisons were made in respect to growth and yield under near-ultraviolet radiation-100% absorbing vinyl film (UV100 film), and those under standard greenhouse vinyl film (standard film). Investigations were also made on the influence of the number of shoots and planting density. 1. Under UV100 film, shoot growth was the same as under standard film. The total number of flowers was somewhat increased, but the rate of harvested fruit decreased, and the yield of marketable fruit was less. On the other hand, there was little difference in the color of leaves or fruit skins; however, the green color of the shoots was lighter. 2. Under the UV100 film, when the planting system used a 180cm ridge width and a single row, the yield of marketable fruit with 2 shoots training (1,389 stocks/10a) was more than 4 shoots training (694 stocks/10a), when the numbers of shoots per unit area were the same. Moreover, with the2 shoots training, the yield of marketable fruit for the 35cm intra-row spacing (1,587 stocks/10a) was more than the 40cm intra-row spacing (1,389 stocks/10a).
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