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Growth and Yield Performance of Potato Varieties Under Different Planting Dates

B. Ahmed*
Plant Physiology Division, BARI, Gazipur

M. Sultana
Tuber crop Research Sub-Center, BARI, Seujgari, Bogra

M. A. H. Chowdhury
Upazila Agriculture Officer (LR), Department of Agricultural Extension Khamarbari, Dhaka-1215

S. Akhter
Agronomy Division, BARI, Joydebpur, Gazipur

M. J. Alam
Soil Science Division, BARI, Gazipur

Abstract/ Executive Summary:

An experiment was conducted during 20 November 2015 through March 20I6 to assess the effect of planting dates on growth and yield performance of three potential varieties of potato at Plant Physiology research field, Bangladesh Agricultural Research Institute, Gazipur. Three planting dates (November 20, December 5 and December 29) and three varieties (var. BARI Alu-35, BARI Alu-40 and BARI Alu-41) were the treatment variables. The experiment was laid out in a randomized complete block design with three replications. Maximum plant height (42.3 cm) was observed in 5 December sowing in var. BARI Alu-40. Highest number of tuber/plant (13) was recorded from December 5 sowing in var. BARI Alu-41. The highest leaf area was found in December 5 sowing of BARI Alu-40 while the lowest leaf area in November 20 sowing in var. BARI Alu-35. The highest tuber weight/plant (97.25 g) was observed in var. BARI Alu-5 at December 5 sowing and the lowest tuber weight/plant (25.58 g) in var. BARI Alu-35 at November 20 sowing. The maximum potato yield (42.12 t/ha) was obtained at December 5 sowing of BARI Alu-35 followed by same date of var. BAR IAlu- 41. From the experiment it was revealed that the first decade of December is the optimum date for planting of potato due to the physiological maturity and tuber yield.

Keywords: Growth, Phonological, Sowing date, Variety

Location: Plant Physiology research field, BARI, Joydebpur, Gazipur

Start Date: 00-11-2015

End Date: 00-04-2016

Program Area: Crop-Soil-Water Management

Commodity: Potato

Objectives:

To analyze the growth, development indices of different potato varieties and yield of potato in relation to planting date.

Methodology:

The experiment was conducted at Plant Physiology research field, BARI, Joydebpur, Gazipur during rabi season of 2015-16. The soil was silty clay loam in texture belonging Chhiata series under AEZ-28 having low organic matter (0.97%) and deficient in total nitrogen (0.056%), available phosphorus (12 ppm),exchangeable potassium (0.17 meq/100 g soil) and available sulpher (10 ppm). Three planting date (November 20, December 5 and December 29) and three varieties (var. BARI Alu-35, BARI Alu-40 and BARI Alu-41) were studied and laid out in randomized complete block design with three replications. The plot size was 3.6 m x 5.4 m.

The fertilizer dose was N23, P18 and K20 Kg/ha and were applied in the form of urea, triple super phosphate (TSP) and muriate of potash (MoP), and Gypsum, respectively. One third of total fertilizers were applied as basal and two times urea fertilizer were applied as top dressed. A light irrigation was given before sowing of seeds for uniform germination. The seeds were sown with spacing of 30 cm x 60 cm in the depth of 5 cm in furrow followed by earthing up. The plots were weeded by hand during the early growth stage and irrigated by three times including germination. Ten plants were collected from each plot at vegetative and flowering stage for leaf area measurement. The emergence and physiological maturity were taken when 70% of plants emerged and leaves of plants turned yellow, from observations at 23-days intervals. For tuber formation, four plants in each replication two or three times a week from about two weeks after emergence were dug up and were analyzed as in Kawakami et al. (2003). The yield components data were taken from 10 randomly selected plants prior to harvest from each plot. The dry weights (DW) of tuber and leaf were measured after oven drying at 70^oC for more than 72 hrs, and the leaf area index (LAI) was calculated as the product of the measured leaf area and leaf dry weight ratio and the total leaf dry weight. The marketable (heavier than 20 g) tuber fresh and dry weights were recorded after physiological maturity for 12 plants of each cultivar and tuber type in each replication. Harvesting was done at maturity stage. At harvest, the yield attributes and tuber yield was analysed as per MSTAT-C software.

Source of Information: Bangladesh Agron. J. 2017, 20 (1): 25-29

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It can be concluded from the findings on different parameters of yield of potato var. BARI Alu- 35 and BARI Alu-41 that sowing time at December (first decade) is the optimum for obtaining better yield of potato but reasonable yield could be possible upto December 20.

Knowledge Management: Journal