M. Moniruzzaman
R. Khatun
N. Ara
Bush bean, Nirogen levels, Growth, Yield
Plant Physiology Research Field of HRC, BARI, Gazipur
Crop-Soil-Water Management
Bush bean, Fertilizer
The experiment was conducted at the Plant Physiology Research Field of HRC, BARI, Gazipur during winter (rabi) season of 2013-2014. The soil was clay loam with pH 5.9, and contained 0.55% organic carbon, 0.95% organic matter, 0.08% total N, 9.0 µg/g available phosphorus and 0.18 meq/100 g soil exchangeable potassium, 9.0 µg/g available sulphur, 0.10 µg/g available boron and 0.40 meq/100 g soil exchangeable magnesium. The treatments comprising two varieties (BARI bush bean-1 and BARI bush bean-2) and five levels of nitrogen (0, 75, 100, 125 and 150 kg/ha) were replicated thrice in 2 x 5 RCB factorial design. The size of each plot was 3.0 × 1.0 m. The plant spacing was 25 x 10 cm. Seeds were sown by hand on November 26, 2013 at the rate of two seeds/hill. Before sowing seeds were treated with Bavistin @ 2.5 g/kg seed. After 15 days of sowing (DAS) thinning was done keeping one healthy seedling/hill. Two hand weedings were done at 15 and 50 DAS. A uniform dose of P (40kg/ha), K (75 kg/ha), S (10 kg/ha), Zn (2 kg/ha), B (1.4 kg/ha), Mg (2 kg/ha) and cowdung (5 t/ha) was used in this experiment. The full dose of phosphorous, potassium, sulphur, zinc, boron, magnesium and cowdung, and one-third of nitrogen as per treatment was applied during final land preparation and the rest half of nitrogen was applied at 20 and 35 days after sowing. The nitrogen was top dressed between the rows in appropriate moist condition. The source of N, P, K, S, Zn, B and Mg were urea, TSP, MoP, Gypsum, zinc sulphate, boric acid (medicated) and magnesium sulphate. In addition to pre-sowing irrigation, four additional irrigations were given to the crop. Tender green pods were picked out at regular intervals for recording plot wise yield and a total of five pickings were made. The harvesting of pods of BARI Jharsheem-1 started from January 25, 2014 and continued upto February 19, 2014 whereas harvesting of pods of BARI Jharsheem-2 started from February 02, 2014 and continued upto February 26, 2014. Five plants were sampled randomly in each treatments and averaged for recording the changes in dry weight in aerial parts (leaf, stem and pod), at 15 days interval starting from 25 DAE (days after emergence) to 100 DAE. The samples were first sun dried and thereafter in oven at 72oC till a constant weight was recorded. From these observations the component dry matter per square meter was calculated. The growth parameters comprising TDM (total dry matter), LAI (Leaf Area Index), CGR (Crop Growth Rate), RGR (Relative Growth Rate) and NAR (Net Assimilation Rate) were determined according to Gardener et al., 1985).
Research Report on Horticultural Crops 2013-2014 (Olericulture) HRC, BARI, Gazipur
Report/Proceedings