Effect of Phosphate Solubilizing Bacteria on Yield of  Transplanted Rice under Lateritic Belt of West Bengal, India

The field experiment was conducted at Uttar Banga Krishi Viswavidyalaya, West Bengal, India during rabi 2007-08 to 2008-09 to study the growth and productivity of yellow sarson under different nutrient managementi practices and pre-sowing seed soaking. The highest value of LAI (4.00), apart from the maximum plant height (129.97cm), dry matter accumulation (481.93g m-2) at 90 days, crop growth rate (12.29 g m-2 day-1) in between 45 to 60 days, root dry weight (1.645 g plant-1) with the highest average root diameter (0.932 mm) were observed in treatments receiving 75% recommended dose of chemical fertilizer with farm yard manure, Azotobacter and phosphate solubilizing bacteria as non-chemical source. Similarly at 45 days of crop age, significantly higher stomatal conductance (701.68 m mol m-2 s-1) and transpiration rate (4.55 m mol m-2 s-1) were reflected by the same treatment combination. These were attributed to the production of maximum seed yield (1374 kg ha-1), which was 39.91% higher than the recommended dose of chemical fertilizer application. On an average, seeds soaked with water before sowing reflected 9% lesser yield (1103 kg ha-1) against chemical soaking. Yellow sarson crop grown with integrated nutrient management practice consisting 75% of the recommended dose of chemical fertilizer along with farm yard manure (5t ha-1), Azotobacter (5kg ha-1) and phosphate solubilizing bacteria (5kg ha-1) coupled with seed soaking in 100ppm KH2PO4 confirms to be the best treatment combination from the treatment schedule considered during the study for the sub-Himalayan plains of West Bengal, India in terms of crop growth and productivity.

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KEBERADAAN BAKTERI PELARUT FOSFAT DAN AKTIVITAS ENZIM FOSFATASE TANAH DAERAH PERAKARAN TANAMAN OBAT DARI KEBUN RAYA CIBODAS

Jurnal Rekayasa Lingkungan ◽

10.29122/jrl.v6i3.1943 ◽

2018 ◽

Vol 6 (3) ◽

Author(s):

Suliasih Suliasih

Keyword(s):

Alkaline Phosphatase ◽

Soil Sample ◽

Rhizosphere Soil ◽

Botanical Garden ◽

Soil Enzyme ◽

Soil Samples ◽

Phosphate Solubilizing Bacteria ◽

Bacillus Sp ◽

Phosphate Solubilizing ◽

Serratia Rubidaea

A study was undertaken to investigate to occurance of phosphate solubilizing bacteria from rhizosphere soil samples of medicine plants in Cibodas Botanical Garden. 13 soil samples of medicine plants are collected randomly The result shows that 71 isolates of phosphate solubilizing bacteria were isolated, and 10 species of these organism was identified as Azotobacter sp, Bacillus sp, Chromobacterium sp, C.violaceum, Citrobacter sp. , Enterobacter sp., E. liquefaciens. Nitrosomonas sp., Serratia rubidaea, Sphaerotillus natans. Azotobacter sp. And Bacillus sp. Are found in all of soil tested. Conversely, Serratia rubidaea is only in the sample from rhizosphere of Plantago mayor The activity of acid alkaline phosphatase in soil tested ranged from 0.78 â€“ 60,18 ugp nitrophenole/g/h, with the higest values being recorded in soil sample from rhizosphere of â€œLavenderâ€.Keywords : phosphate solubilizing bacteria, soil enzyme phosphatase

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