scholarly journals Evaluation of indigenous rhizobacterial strains with reduced dose of chemical fertilizer towards growth and yield of mustard ( Brassica campestris ) under old alluvial soil zone of West Bengal, India

2017 ◽  
Vol 15 (4) ◽  
pp. 447-452 ◽  
Author(s):  
Shampa Dutta ◽  
Jayanta Kumar Datta ◽  
Narayan C. Mandal
Author(s):  
S. Das ◽  
F. H. Rahman ◽  
S. Mukherjee ◽  
K. Nag

The experiment was carried out at Horticulture Research Station, Mondouri, BCKV, Mohanpur, Nadia, West Bengal during the years 2014-15 and 2015-16. The cloves were planted during middle of the October in 2.0 x1.5 m plot at 20 x15 cm spacing in with three replications. Two nitrogen fixing biofertilizers (Azospirillum lipoferum and Azotobacter chrococcum), two phosphatic biofertilizers (Vesicular arbuscular mycorrhiza - Glomus fasciculatum) and phosphate solubilising bacteria (Bacillus polymixa) and one potassic solubilizer (Fraturia aurantea) were included. Biofertilizers were applied @ 6 g per plot with 250 g well rotten Farm yard manure. Three levels of recommended dose of NPK i.e., 100%, 75% and 50% were included. Two way combinations of both nitrogenous and phosphatic biofertilizers were followed in Total 12 treatments along with control. Quantitative attributes like plot yield (2.85 kg/3 m2) and projected yield (7.12 t/ha) were noticed in NPK (100%) + Azospirillium + PSB +K solubilizer. Looking to economics of various treatments, maximum net return (Rs 165,043) and B:C ratio (1.55) was obtained from NPK (100%) + Azospirillium + PSB + K solubilizer. Whereas, minimum B:C ratio (0.60) was recorded under NPK (50%) +Azotobacter + VAM + K solubilizer. These results suggested that the optimum production of garlic can be obtained with combined application of 100% NPK and biofertilizers (Azotobacter @ 5 kg/ha +PSB @ 5 kg/ha). The results also indicate the scope of reduction of 25% of inorganic fertilizer through inoculations of biofertilizers.


2014 ◽  
Vol 43 (1) ◽  
pp. 53-58 ◽  
Author(s):  
Biswajit Pramanick ◽  
Koushik Brahmachari ◽  
Arup Ghosh ◽  
ST Zodape

On summer rice, foliar spray was applied thrice at different concentrations (0, 2.5, 5.0, 7.5, 10.0 and 15.0%, v/v) of seaweed extracts (namely, Kappaphycus sp. and Gracilaria sp.) along with the recommended dose of fertilizer (RDF). The highest grain yield was recorded with the applications of 15% Kappaphykus sap + RDF, followed by 15% Gracilaria sap + RDF extract resulting in 41.47 and 34.99% increases, respectively compared to the control. The maximum straw yield was also achieved with 15% seaweed extract application. Improved nutrient uptake (N, P and K) was also observed with seaweed extract applications. DOI: http://dx.doi.org/10.3329/bjb.v43i1.19746 Bangladesh J. Bot. 43(1): 53-58, 2014 (June)


Author(s):  
Champak Kumar Kundu ◽  
Purnendu Sekhar Bera ◽  
Arundhati Giri ◽  
Shyamali Das ◽  
Madhab Kumar Datta ◽  
...  

An experiment was conducted during the rabi season of 2012-13 and 2013-14 at Instructional Farm, Jaguli, Nadia, West Bengal to find out the different doses of nitrogen and potassium on growth and yield of potato. The experiment was designed in RBD with 10 treatments replicated thrice in potato cultivated variety Kufri Jyoti. Different doses of nitrogen and potassium were considered as treatments. For all the treatments P2O5 dose was 150 kg ha-1. The size of the experimental plots were 12 square meter and seed tubers were planted with 50 cm X 20 cm spacing. In this experiment, it was observed that the growth attributes like plant height, leaf area index, dry matter accumulation of tubers at 80 DAP, crop growth rate at 60-80 DAP were highest with the application of 250 kg ha-1 N, 200 kg K2O (T9) and statistically at par with 300 kg ha-1 N, 150 kg ha-1  K2O (T10). Again among the yield parameters, T9 recorded the highest tuber number per square meter and tuber yield which was closely followed by T10. Highest B:C ratio was also observed in T9.This result proves that T9 can be recommended to get better growth and economic yield of potato than T10  (farmer practice does) in the new alluvial soil of West Bengal.


Author(s):  
Kousik Atta ◽  
Jahnavi Sen ◽  
Pravachan Chettri ◽  
Anjan Kumar Pal

Background: Salinity and drought are the major abiotic stresses and both can cause osmotic imbalances. Drought stress directly results in osmotic stress whereas salinity problem firstly disrupts the water balance and eventually induces ion toxicity which results in cyto-toxicity, metabolic impairment, nutrient imbalance and finally poor crop growth and yield. The co-ordinated up-regulation or constitutive expression of antioxidative system in plants is the main defense in plant against these stresses and thus the present experiment was undertaken to study the antioxidant responses under drought and salinity stress at seedling stage in ricebean (Bidhan 1). Methods: For studying the effect of iso-osmotic potential of salinity and drought stress solutions of NaCl and PEG 6000 with -0.2 MPa (50mM NaCl and 10% PEG), -0.4 MPa (100 mM NaCl and 12% PEG) and -0.8 MPa (200mM NaCl and 18% PEG) osmotic potential were used. The experiment was done in the laboratory of Department Plant Physiology, Bidhan Chandra Krishi Viswavidyalaya (BCKV), Mohanpur, Nadia and West Bengal in the year 2017-18 and 2018-19. Result: Under moderate to high intensity of osmotic stresses the leaf proline content decreased. The mild and medium stress treatments induced much higher activity of GPOX and APX in the leaf which then decreased somewhat as the intensity of stress increased. The experiment showed that drought stress was found to produce more drastic effects on seedling growth in ricebean as compared to the salinity stress at iso-osmotic potentials.


Author(s):  
Shinta Lestari Santosa ◽  
I Nyoman Rai ◽  
Wayan Diara

Vegetable cultivation is livelihoods for side Lake Batur communities, Kintamani, Bangli. Hilly natural conditions with a soil texture influenced by the eruption of Mount Batur, 900 m above sea level, and 900-3500 mm high rainfall, causing this region is very suitable for the cultivation of various vegetables, including shallot. One effort to meet the high demand for shallots is that efforts are made to improve cultivation techniques, including fertilizing to improve yields. In modern agriculture, the use of fertilizer is absolutely essential to trigger the level of crop production. The aims is to analyze the combination effect of using of inorganic fertilizer (ZA fertilizer) and organic fertilizer (compost fertilizer) on shallot vegetable cultivation systems on the content of pollutants, N nutrients and onion crop yields on the shores of Lake Batur, Kintamani District, Bangli Regency. The study using RBD with two factors where factor I: provision of organic fertilizer is leaf compost made aerobically (O), consisted of 3 levels, namely: O0 = 0*, O1 = 5* and O2 = 10*and factor II: the application of inorganic fertilizer namely ZA (S) fertilizer, consisted of 3 levels, namely: S0 = 0**, S1 = 50** and S2  = 100**, each repeated 3 times. The parameters observed were the growth and yield of shallots as well as the content of Pb, Zn, Cu and N nutrients in the soil. The nutrient content (N) in the soil, when using chemical fertilizer ZA and compost organic is not significantly different, as well as the results of onion plants, while the content of Pb, Zn and Cu on the use of chemical fertilizer ZA and organic compost, very real different. The highest soil Pb content in S2O1 treatment is 30.07***, the highest soil Zn content in the S2O1 treatment was 28.24***, and the highest soil Cu content in the S1O2 treatment is 17.22***. *= tons/ha **= kg/ha ***= mg/kg Keywords: compost; contents Pb; Zn; Cu of soil; shallot; ZA.


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