Articles
Effects of planting distances on the growth and yield of Lactuca indica L. ‘Seonhyang’
Article number
1129_19
Pages
127 – 130
Language
English
Abstract
Lactuca indica L., a perennial belonging to Compositae, grows in the wild in Korea.
It is used as vegetable for wrapped rice or meat, cooked greens, kimchi and pickle.
In Korean medicine, it is used for strengthening the stomach, sedation, urination, sweating amongst other uses.
It has a bright future as a health food.
Therefore, we researched the effect of different planting distances of Lactuca indica L. ‘Seonhyang’ on its growth and yield.
Seeds were sown in 105 cells tray-pot on March 4, 2013 in greenhouse and raised for 45 days.
Seedlings were planted at 9 planting densities (10×10, 10×15, 20×15, 20×20, 20×25, 30×25, 30×30 and 30×40 cm) on May 2 in the field, which had been prepared with 2 t of compost and N:P:K=14:10:9 kg 1000 m-2. We harvested stems when leaves were about 1 cm in diameter and 25 cm in length.
The first harvest was June 20, the second was July 20 and the third was August 19. The growth and yield plant-1 were greatest in the first harvest at a planting density of 30×25 cm (leaf length 27.8 cm, leaf width 8.6 cm, stem width 14.8 mm, chlorophyll 47.4 SPAD, yield 236.1 g plant-1) and total yield was estimated to be 3,833 kg 10 a-1. At a spacing of 10×10 cm, leaf length was 26.7 cm, leaf width was 6.6 cm, stem width was 9.3 mm, chlorophyll was 34.7 SPAD and yield was the lowest per plant at 66.6 g.
However, the total yield of 7,910 kg 1000 m-2 was twice that for a spacing of 30×25 cm.
Plants grown at a spacing of 10×10 cm were very suitable for making pickle and kimchi because the stems were slim.
The yields decreased according to harvesting time (4,662 kg 1000 m-2 in the 1st, 2,520 kg 1000 m-2 in the 2nd and, 728 kg 1000 m-2 in the 3rd harvest).
It is used as vegetable for wrapped rice or meat, cooked greens, kimchi and pickle.
In Korean medicine, it is used for strengthening the stomach, sedation, urination, sweating amongst other uses.
It has a bright future as a health food.
Therefore, we researched the effect of different planting distances of Lactuca indica L. ‘Seonhyang’ on its growth and yield.
Seeds were sown in 105 cells tray-pot on March 4, 2013 in greenhouse and raised for 45 days.
Seedlings were planted at 9 planting densities (10×10, 10×15, 20×15, 20×20, 20×25, 30×25, 30×30 and 30×40 cm) on May 2 in the field, which had been prepared with 2 t of compost and N:P:K=14:10:9 kg 1000 m-2. We harvested stems when leaves were about 1 cm in diameter and 25 cm in length.
The first harvest was June 20, the second was July 20 and the third was August 19. The growth and yield plant-1 were greatest in the first harvest at a planting density of 30×25 cm (leaf length 27.8 cm, leaf width 8.6 cm, stem width 14.8 mm, chlorophyll 47.4 SPAD, yield 236.1 g plant-1) and total yield was estimated to be 3,833 kg 10 a-1. At a spacing of 10×10 cm, leaf length was 26.7 cm, leaf width was 6.6 cm, stem width was 9.3 mm, chlorophyll was 34.7 SPAD and yield was the lowest per plant at 66.6 g.
However, the total yield of 7,910 kg 1000 m-2 was twice that for a spacing of 30×25 cm.
Plants grown at a spacing of 10×10 cm were very suitable for making pickle and kimchi because the stems were slim.
The yields decreased according to harvesting time (4,662 kg 1000 m-2 in the 1st, 2,520 kg 1000 m-2 in the 2nd and, 728 kg 1000 m-2 in the 3rd harvest).
Authors
H. Noh, J. Kim, S. Kim, I. Kim, S. Choi
Keywords
powdery mildew, harvesting time, planting distance, labour cost
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