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Yield Contributing Characters, Yield and Runner Production of Strawberry as Influenced by Different Planting Time and Defoliation

S.M.L. Rahman
Citrus Research Station, Bangladesh Agricultural Research Institute, Jaintapur, Sylhet

M.M. Hossain
Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

M.M. Rahman
Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

M.A.K. Mian
Department of Genetics and Plant Breeding Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur 1706, Bangladesh

T. Hossain
Department of Crop Botany, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur

Abstract/ Executive Summary:

An experiment was conducted to study the effect of different planting time and defoliation on yield contributing characters, yield and runner production of strawberry at the research field Laboratory of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during November 2008 to April 2009. There were three planting dates (P₁= 15 October, P₂= 1 November and P₃= 15 November) and three defoliation (D₁= 25% defoliation, D2= 50% defoliation and D₃= No defoliation). Remarkable variabilities were recorded among the treatments in respect of number of fruits per plant, weight of fruits per plant, yield per hectare and fruit TSS (%). Individual fruit weight (g), number of fruits per plant, weight of fruits per plant (g) and fruit yield per hectare (t) were found highest (26.67 g, 22.08, 587.96 g and 17.64 t, respectively) in 1st November planting having no defoliation. On the other hand, number of runners per plant, number of plantlets per runner and number of plantlets per plant (8.92, 4.42 and 39.29 respectively) were found highest in P₃D₂ planting (15 Nov planting x 50% defoliation). Fruit TSS% was recorded maximum (11.08) and minimum (9.33) under 15 October planting with 25% defoliation and 15 November planting with 25% defoliation.

Keywords: Fragaria ananassa, Fragaria virginiana, Fragaria chiloensis, Runner

Location: The research field and Laboratory of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur

Start Date: 00-11-2008

End Date: 00-04-2009

Program Area: Crop-Soil-Water Management

Commodity: Strawberry

Objectives:

To study the effect of different planting time and defoliation on yield contributing characters, yield and runner production of strawberry.

Methodology:

Source of planting materials:One accession FA002 of strawberry used in this study was selected from the previous study. Six accessions of strawberry viz. FA001, FA002, FA003, FA004, FA005 and FA006 were used for that study. The accession FA002 was came out with largest fruit size, maximum fruit TSS% and highest fruit yielding potential. Out of the six accessions, FA002 and FA003 were collected from Rajshahi University and Bangladesh Agricultural University, respectively. Rests of four were collected from different reputed nurseries of the country. Experimental site and land preparation: The experiment was conducted at the Horticulture Research Farm, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur during the period from November 2008 to April 2009. The land was deep ploughed with tractor followed by harrowing and laddering up to a good tilth. All weeds and stubbles were removed. Well decomposed cow dung and Di Ammonium Phosphate (DAP), Murat of Potash(MP) were applied @ 37 tons, 640 kg and 333 kg per hectare in general. Full dose of cow dung and DAP and half of MP were applied at final land preparation and rest of MP in two installments. Immediately after manuring and fertilizing and preparing the field for planting, mulching was done by laying clear plastic polyethylene on moist soil so that heat was trapped under the plastic, raising the soil temperature, killing or debilitating pests. This solarization took about six weeks and after that mulch was removed before planting of strawberry saplings. Design and layout: The experiment was laid out in Split-plot Design with four replications. The experimental plot was divided into four blocks, representing four replications. Each block was further sub-divided into 03 unit plots. Each unit plot then subdivided into 03 sub-plots. Planting of saplings and intercultural operations: First, second and third transplanting were done on 15 October, 1 November and 15 November 2008, respectively. Saplings were planted with the row and plant spacing of 60.96 cm x 30.48 cm . Intercultural operatione were done as when necessary. Plant protection, data collection and statistical analysis: The crop was protected from the attack of leaf roler, spittle bug by applying Sumithion 60 EC @ 1ml/l. Phytophthora crown rot was controlled by spraying Ridomil gold @ 2 g/l. Leaf spot was caused by the fungus Micosphaella fragariae which was controlled by spraying robral @ 2 g/l. Strawberries were harvested by hand picking when it was firm and well-colored and early in the day at an interval of 3 to 4 days. After harvest, fruits were cooled under shade. Five plants were selected t-west directions), days to flower initiation, flower trusses per plant, number of flowers per truss, number of flowers per plant, flower diameter, flower disk diameter, individual fruit weight, fruit length, fruit diameter, number of fruits per plant, weight of fruits per plant, fruit TSS (%) and fruit yield per hectare. The recorded data on different parameters were compiled and statistically analyzed using MSTATC computer program and the treatment means were compared by DMRT.

Source of Information: Int. J. Sustain. Crop Prod. 9(2):22-28, 2014

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

01 November planting with no defoliation was the best for yield and quality of strawberry. On the other hand, 15 November planting with 50% defoliation was found best for runner production.

Knowledge Management: Journal