H. M. Zakir
Department of Agricultural ChemistryBangladesh Agricultural University, Mymensingh
M. N. Sultana
Department of Agricultural ChemistryBangladesh Agricultural University, Mymensingh
K. C. Saha
Department of Agricultural ChemistryBangladesh Agricultural University, Mymensingh
Carrot, Organic fertilizer (Biomeal), Organic matter, Quality, Yield
Horticulture Farm, Bangladesh Agricultural University (BAU), Mymensingh
Crop-Soil-Water Management
The experiment was carried out at the Horticulture Farm, Bangladesh Agricultural University (BAU), Mymensingh, during the period from November 2009 to February 2010. The organic fertilizer, Biomeal was collected from the local market (marketed by the Corbel International Limited, Dhaka, Bangladesh, Batch # 00906). Total concentrations of major nutrients in Biomeal are presented in Table 1. The experimental site was silt loam soil. Previously T. aman rice was cultivated in the field before laying out of present experiment. The experiment was conducted on well prepared plots according to randomized complete block design (RCBD) with three replications. The size of each unit plot was 4 m × 2.5 m and the total numbers of plots were 24 by considering eight treatments. The treatments werecontrol (T0), recommended dose of inorganic fertilizers (RDIF) (197.6, 148.2, 148.2 and 98.8 kg ha-1 urea, TSP, MOP and gypsum, respectively) (T1), recommended dose of Biomeal (RDB) (6 t ha-1) (T2), ½ RDIF + ½ RDB (T3), RDIF + ½ RDB (T4), ¼ RDIF + RDB (T5), ½ RDIF + RDB (T6) and RDIF + RDB (T7). The test crop was carrot (Daucuscarota L.) cv. New Kuroda. Total amount of TSP, gypsum and Biomeal were applied to the individual plots during final land preparation according to the treatments used. Urea and MOP were applied in three equal splits: first split was applied at final land preparation, second one was at 15 days after seed sowing and the third split was applied at 35 days after seed sowing. Intercultural operation was done as per necessary. Thinning was carried out after complete germination so as to have uniform plant distance. Data were recorded on plant height, shoot and root lengths, diameter of root, fresh weight of shoot and root, shoot and root dry weights, percent branched and cracked roots, and gross and marketable yield of carrot. The chemical analyses of soil were accomplished in the laboratory of the Department of Agricultural Chemistry, Bangladesh Agricultural University (BAU). Chemical properties and nutrient contents (Organic carbon, N, P, K, Ca, Mg and S) in soil samples were determined. Carotene, vitamin C, reducing sugar and total sugar content in carrot were determined at the Post Harvest Technology section, Horticulture Research Centre, Bangladesh Agricultural Research Institute (BARI), Gazipur based on the methods as described by AOAC. Nutirents content (N, P, K, S, Ca and Mg) in carrot samples were determined in the laboratory of the Department of Agricultural Chemistry, BAU. Analysis of variance was done with the help of computer package MSTAT. The test LSD was used to get the significant difference among the treatments means.
J. Environ. Sci. & Natural Resources, 5(1): 39 - 45, 2012; ISSN 1999-7361
Journal