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Effect of Spacing and Harvesting Interval on the Growth and Yield of Indian Spinach

A.K.M. Matiar Rahman
Bangladesh Agricultural Research Institute, Joydebpur, Gazipur

S.M. Monowar Hossain
Bangladesh Agricultural Research Institute, Joydebpur, Gazipur

M. Mozammal Haque
Bangladesh Agricultural Research Institute, Joydebpur, Gazipur

M. Monjur Hamid
Bangladesh Agricultural Research Institute, Joydebpur, Gazipur

Abstract/ Executive Summary:

An experiment was conducted at the Bangladesh Agricultural Research Institute during summer. 1985 to study the effect of spacings (30 x 45,30 x 75 and 60 x 60 cm)and harvesting intervals (8. 12 and 16 days from lst cutting) on the growth and yield of Indian spinach. The result revealed that the number and size of leaf. length and weight of cuttings increased both in wider plant spacing and longer harvesting interval. The closest spacing with shortest harvesting interval produced the maximum yield (58.82 t/ha) while the lowest yield (14.82 t/ha) was recorded in widest spacing and longest harvesting interval.

Keywords: Spacing, Harvesting interval, Growth and yield, Indian Spinach

Location: Central Research Station, BARI

Start Date: 00-00-1985

End Date: 00-00-1985

Program Area: Crop-Soil-Water Management

Commodity: Indian spinach

Objectives:

To determine optimum plant spacing and stages of harvesting to maximize production per unit area and time.

Methodology:

The experiment was conducted at the Central Research Station, BARI With a local variety (green) of Indian spinach during the kharif season of 1985. Three plant spacings (30 x 45, 30 x 75 and 60 x 60 cm) combined with three intervals of harvesting (8, 12 and 16 days) were used. The experiment was set up in the randomized complete block design with four replications. Seeds (3/pit) were directly sown in pits in each unit plot (3 x 3.6 m) on April 9. One healthy seedling/pit was allowed to grow. The crop was fertilized with cowdung, TSP, MP and urea at the rate of 14000, 100, 100, and 200 kg/ha respectively. The total amount of cowdung and TSP were applied during final land preparation and 115 urea and MP were top dressed in 4 equal installments at an interval of 15 days from the date of first fertilization. Irrigation and other cultural operations were done as and when necessary. The tip of each plant was pruned above 10^th leaf. Harvesting of cutting was started 40 days after sowing and continued at an interval of 8, 12 and 16 days. Number of cutting, leaf size. number of leaves/cutting and cutting weight/plant were recorded from 10 randomly selected plants in each plot. Data were then statistically analyzed as per standard procedures

Source of Information: Bangladesh Agron. J. 1990, 3(1 & 2): 31-33

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The highest yield (39.44 t/ha) was obtained in the closest spacing while at wider spacing the yield progressively decreased. The widest plant spacing produced the maximum number of leaves, cutting length and weight but reduced yields by 21.75% and 53.29% compared to medium and closest spacing respectively. The maximum number of cutting and weight/plant were obtained from harvesting at 8 days interval followed by 12 and 16 days interval. Higher frequency of harvesting promoted rapid emergence of more harvestable shoots/plant which ultimately contributed toward high yield (43.08 t/ha) from shortest harvest interval.Higher frequency of harvesting promoted rapid emergence of more harvestable shoots/plant which ultimately contributed toward high yield (43.08 t/ha) from shortest harvest interval. The closest spacing coupled with shortest harvesting interval gave the highest yield (58.82 t/ha). It may be concluded from this experiment that closest spacing (30 x 45 cm) with shortest harvesting interval (8 days) may be recommended for maximum yield of Indian spinach grown without support.

Knowledge Management: Journal