M. K. Alam
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh.
N. C. Shil
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh
A.T. M. A. I. Mondol
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh
N. Salahin
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh
M. J. Alam
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh.
M. A. Hossain
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh
Barind tract, Bed planting, Chickpea, Conventional tillage, Moisture content, Strip tillage
Godagari upazila, Rajshahi district, Bangladesh
Farming System
Vermicompost and vermiculture, Cropping pattern
A field experiment on Chickpea- Irrigated rice-T.aman rice cropping system were conducted in High Barind Tract soil (under AEZ-26) of Godagari upazila, Rajshahi. The physical properties of experimental soil are presented.The region is characterized by low annual rainfall (1370 ± 323 mm) with uneven rainfall distribution and wide variation from year to year and high temperature range (maximum 43°C in June 2014 and minimum 6.2°C in January, 2017). The texture class of the experimental soil was silty clay (160 g kg-1 sand, 663 g kg-1 silt and 177 g kg-1 clay) and the bulk density ranged from 1.48 g cm-3 at 0-10 cm depth to 1.51 g cm-3 at 10-20 cm depth. The clay minerals of the soils are mostly mica, kaolinite, interstratified mica-vermiculite-smectite and kaolinite-smectite (Moslehuddin et al., 1999). The soil was slightly acidic (6.30) and classed as Grey terrace soils (Aeric Eutrochrept). Geographically, the experiment was located at 24°31′ N latitude, 88°22′ E longitude. The land was 40 m above the seas level. Soil tract is High Barind, while the Subgroup (USDA) is Aeric Albaquept, soil series is Amnura. Physiographic unit is Barind Tract. Parent material is Madhupur Clay type. The organic carbon and total N of the initial soil was 0.74% and 0.86%, respectively. The available P, K and S were 12, 79 and 13 µg g-1, respectively. The field site was highly drainable as it was located above the flood level (BARC, 2005). Chickpea was the first crop in this season. The tillage operations such as strip tillage and bed plantingwere employed with VMP (versatile multi-crop planter) and conventional tillage with power tiller. As this was the opening season, the residue retention practice was not applied.Thus 3 treatment combinations were arranged in split plot design with three replications. The plot size was 6 M × 5 M. The tested variety was BARI Chola 8. The crops were fertilized with soil test based (STB) fertilizer dose as per FRG-2012 (BARC, 2012). The fertilizer dose of was N20 P25 K30 S20 Zn1 B0.5 kg ha-1.Seven days before sowing, the field was treated with Glyphosate @ 900 g ae ha-1. The chickpea seed was sown on 14 November, 2017 and harvested on 18 March, 2018. All phosphorus, potassium, gypsum, Zinc sulphate, boric acidwere applied during final land preparation. For N demand, Rhizobium inoculum @ 50 g kg-1 seed was applied. Weeds in strip plots were controlled partially by spraying a post-emergence selective herbicide, Affinity (Carfentrazone ethyl + Isoproturon), @ 2.5 g L-1 water at 20 DAS and only one hand weeding was done at 28 DAS for full elimination of weeds.All intercultural operations were done as per requirement of the crop. The temperature of Digram the experimental area over the season of chickpea.
The collected soil samples were dried at room temperature mixed thoroughly, grinded, sieved with a 2 mm sieve and preserved in plastic containers for subsequent laboratory analysis. Soil samples were then analyzed for SOM, total N and available P, K and S. The pH was determined through glass electrode pH meter method (Jackson, 1962). The SOM was determined by wet oxidation (Rayment and Higginson, 1992), total N by a modified Kjeldahl method (O’Neill and Webb, 1970) and available P by using the SnCl2 reduction method (Black, 1965). The K and S were determined through NH4OAC method (Hanlon and Johnson, 1984) and turbidimetric method (Sperber, 1984), respectively. Micronutrients were analyzed using atomic absorption spectrophotometer. Particle size distribution of the initial soil was analysed by the hydrometer method (Bouyoucos, 1962) and the textural class was determined using the USDA texture triangle. The BD of the soil samples were determined by core sampler method (Black and Hartge, 1986). Soil water content (SWC) was determined by using a MPM-160 Moisture Probe Meter, made by ICT International Pty Ltd (Salahin, 2017). Field capacity was done though pressure plate apparatus method.The growth parameters and yield data were recorded from three quadrates placed immediately after sowing.All relevant data were collected and were analyzed statistically following Statistics 10 program.
Annual Research Report 2017-2018, Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh
Report/Proceedings