Container planting cultivation of Japanese persimmon (Diospyros kaki Thunb. (part 3)--the improvement of the fruit quality by fertilization and irrigation

摘要

We examined the influence of nitrogen fertilization and irrigation on fruit quantity in container planting cultivation of the Japanese persimmon maekawajirou. The highest quality fruits of maekawajirou cultivated in containers were obtained by irrigating 3.0～5.0 liter/day/container of water and by applying 10g/year/container of nitrogen fertilizer. Use of nitrgen fertilizer until August of produced the highest quality fruits of maekawajirou in containers, Use of IB and NK compound fertilizer and organic fertilizer (Hanagokoro) produced the second-highest quality fruits of maekawajirou in containers.