EFFECT OF LOCAL BIOFERTILIZER PRODUCED FROM Bacillus megaterium, Bacillus subtilis AND Bacillus mucilaginosus AND IMPORTED BIOFERTILIZER ON GROWTH AND YIELD OF POTATO Solanum tuberosum L.
IRAQI JOURNAL OF DESERT STUDIES,
2018, Volume 8, Issue 2, Pages 53-65
AbstractThe Field experiment was conducted at the research station – college of Agriculture – university of Baghdad / Al Jadria in 2016 -2017 using Randomized complete block design. The experiment consist of 12 treatments with three replicates , field experiment include the following factors , the first factor was biofertilization ) local and imported) , the second factor was the addation of 2 Level of chemical fertilizer (75% and 50%) of the recommended level , while the third factor include using of two type of carriers ( peatmoss or broth media ) , in addation to four control treatments (75% , 50% and 100 %) of recommended chemical fertilizer and control treatment of without bio or chemical fertilizer . Results showed the effect of the triple interaction of biofertilizer + mineral fertilizer + carriers . So the treatment local biofertilizer + 75% recommended mineral fertilizer + peat moss carrier gave the highest value for percentage of dry matter of vegatitive part 42.2% and also the same treatment was superior for plant height , percentage of tuber matter , mean tuber weight , tuber starch content , protein content of tubers , total yield of crop and the availability of nitrogen and phosphorus in soil after harvesting with the values 71.93 cm , 23.93 % , 890 gm , 17.32 % , 12.93% , 66.37 mega gm ha-1 , 41.00 mg kg-1 soil ,10.98 mg kg-1 soil respectively while the treatment imported biofertilizer + 75% recommended mineral fertilizer + peatmoss carrier gave the beast availability for potassium 186.75 mega gm ha-1, and this treatment of triple interaction was Superior over the control treatments including 100% mineral fertilizer recommendation.
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