Ashraful Kabir
Office of the Controller of Examinations, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh.
Arfan Ali
Department of Horticulture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh.
M.H. Waliullah
Fruit Research Station, BARI, Rajshahi, Bangladesh.
Mehdee Mohay Men-Ur Rahman
Department of Biochemistry, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh.
Abdur Rashid
Department of Agribusiness and Marketing, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh.
Carrot, Growth, Root length, Root weight, Dry matter
Horticulture Farm of the Sher-e-Bangla Agricultural University, Dhaka
Crop-Soil-Water Management
The experiment was conducted at the Horticulture Farm of the Sher-e-Bangla Agricultural University, Dhaka during November 2005 to April 2006. Laboratory works were done both at Horticulture Laboratory and Soil Science Laboratory in Sher-e-Bangla Agricultural University, Dhaka-1207. The experiment area was belonged to the Modhupur Tract and AEZ 28. The soil was sandy loam with a pHvalue 6.6. Soil samples were collected randomly from a depth up to 30 cm of the experimental plot and analysis were done and showed nitrogen 0.075%, phosphorus 13 ppm, exchangeable potassium 0.20 me/100g soil and organic carbon 0.82%. New Caroda, variety of carrot, was used for the experiment. The seeds of this variety were collected from "Hamid Seed Store", Siddique Bazar, Dhaka. The experiment was conducted to study the effect of four levels of sowing times and three levels of spacing. Different levels of two factors were as follows: Sowing time: Carrot seeds were sown at four different times denoted as T1, T2, T3 and T4, T1 = 1st sowing, November 28, 2005, T2 = 2nd sowing, December 08, 2005, T3 = 3rd sowing, December 18, 2005, T4 = 4th sowing, December 28, 2005,
Spacing: Three different spacing were used denoted as S1, S2 and S3
S1= 20 cm x 10 cm, S2= 25 cm x 15 cm, S3= 30 cm x 20 cm
The two factors experiment was laid out in a RCB Design with three replications. The whole experimental area was 24.5m x 8.0m, which was divided into three blocks. Each block was again divided into 12 plots and hence there were 36 (12x3) unit plots. The treatments were assigned randomly in each block separately. The size of unit plot was 2.0m x 15m. The distance between two adjacent blocks and plots were 1.0 m and 0.5 m respectively. Land preparation, manuring and intercultural operations were done properly. Growth parameters were recorded at 15 days interval after 40 days of sowing and continued to harvest. Ten plants in each plot were used to count number of leaves per plant. Percentage of dry matter was calculated as follows.
Percentage of dry matter = [Fresh weight of root (g)/Dry weight of root (g)] × 100
The recorded data on different growth and yield parameters were calculated for statistical analysis. Analysis of variances (ANOVA) for most of the characters under consideration were performed with the help of MSTAT program. Treatment means were separated by Duncane's Multiple Range Test (DMRT) at 5% level of significance for interpretation of the results.
International Journal of Sustainable Agriculture 5 (1): 29-36, 2013
ISSN 2079-2107
Journal