Effect of Training, Growing Season and Plant Density on Yields and Fruit Quality of Sweet Pepper ''Lustro'' (Capsicum annuum L.)

• Main Authors: Te-Lu Ou, 歐德濾
• Other Authors: 李文汕 博士
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/48117623855236141141

碩士 === 中興大學 === 園藝學系所 === 99 === The objective of this study was to compare the effect of training method, growing season and plant density on yields and fruit quality of sweet pepper‘Lustro’(Capsicum annuum L.). Sweet pepper plants were grown in peat-moss based soil bags in the plastic greenhouse for two seasons, the Autumn-Winter season and the Spring-Summer season, separately in Pu-Li. Yields and fruit quality of the plants were evaluated in both two seasons in the first trial under different training methods, single-stem pruning, twin-stem pruning, and non- pruning, respectively. And were evaluated in the second trial conducted also in the Autumn-Winter season in four treatments, single-stem pruning with 1.7 plants/m2 and 2.5 plants/m2 , twin-stem pruning with 1.7 plants/m2 , and 2.5 plants/m2 , respectively. The total fruit number was greatest in non-pruned plants in both seasons, and was greater in twin-stem than in single-stem pruned plants in the Autumn-Winter season, but there was no difference between twin-stem and single-stem pruned plants in the Spring-Summer season. The total fruit weight was greatest in non-pruned plants in both seasons, but there was no difference between twin-stem and single-stem pruned plants in both seasons. Both of the marketable fruit number and fruit weight were greatest in non-pruned plants in both seasons, but there was no difference between twin-stem and single-stem pruned plants in both seasons. Both of the medium-to-large fruit number and fruit weight were greatest in pruned plants in the Autumn-Winter season, but there was no difference between twin-stem and single-stem pruned plants. And there was no difference among non, twin-stem and single-stem pruned plants in the Spring-Summer season. Both of the small fruit number and weight were greatest in non-pruned plants in both seasons. And were greater in twin-stem than in single-stem pruned plants in the Autumn-Winter season. There was no difference between twin-stem and single-stem pruned plants in the Spring-Summer season. The average fruit weight was greatest in single-stem in both seasons. And was greater in twin-stem than in non pruned plants in the Autumn-Winter season. But there was no difference between twin-stem and non pruned plants in the Spring-Summer season. The training methods did not affect the fruit quality characteristics like hardness, thickness, total soluable solids content, Vitamin C content, seed number and seed weight of the fruit. The total fruit yields, marketable fruit yields, and small fruit yields per square meter were grater in plant density 2.5 plants/m2 than in 1.7 plants/m2 . But there was no difference in medium-to-large fruit yield and average fruit weight between them. The plant density did not affect the fruit quality characteristics like hardness, thickness, total soluable solids content, Vitamin C content, seed number and seed weight of the fruit. In summary, the total fruit yields and small fruit yields of sweet pepper were greatest in non-pruned plants. The medium-to-large fruit yields were greater in pruned plants than in non-pruned plants, but there was no difference in pruned plants between single-stem and twin-stem pruned plants. The average fruit weight was greatest in single-stem pruned plants. The total fruit yields, marketable fruit yields, and small fruit yields per square meter will increase when plant density was from 1.7 plants/m2 to 2.5 plants/m2 . But there was no difference in medium-to-large fruit yields and average fruit weight between them. The training methods and plant density did not affect the fruit quality. The yields and fruit quality was greater in Autumn-Winter season than in Spring-Summer season.