Shehana R S creator Alice Abraham (Guide) text xx Vellayani Department of Soil Science and Agricultural Chemistry, College of Agriculture 1997 9999 monographic und

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The efficiency of phosphobacterin culture in increasing the availability of phosphorus from MRP and the resultant effect on the growth and yield or banana, cv. Nendran was evaluated by conducting laboratory incubation and field studies at FSRS, Kottarakkara during 1993-96. Representative soil samples from the field at FSRS, Kottarakkara were mixed with MRP, PS, FYM and lime in different combinations and incubated at 60% WHC for 90 days. There was only a slight variation in the pH of soil upto 20 days due to the effect of different inputs. After 20 days, the soil showed a tendency to become slightly acidic reaching a mean value of only 5.6 from the initial pH of 5.7. The P solubilising effect was maximum with a combination of PB, FYM and MRP. At the end of 90 days incubation, out of the 100 ppm P applied as MRP, a maximum of 19.31 ppm P became available in this treatment. P solubilised in the unamended soil was only 3.90 ppm and in the other treatments receiving FYM, lime and MRP either alone or in different other combinations, the values ranged from 9.2] to 16.73 ppm. ,-. The application of 3/4 level of the recommended P along with PB, FYM and mulch has produced a significant positive effect on growth and yield characters compared to all the other treatments including the treatment as per package of practices recommendation of the KAU. The highest bunch yield of 10.68 kg plant-1, which was significantly superior to the yield in all the other treatments was recorded by plants supplied with 3/4 level of recommended P as MRP, 10 kg FYM and PB inoculated with proper mulching. The increase in yield in this treatment was 7.55% higher than the yield from plants given fertilizers as per the POP recommendations of the KAU. The second highest bunch weight of 9.93 kg plant-1 was recorded by the plants which received the full recommended level of P along with N and K (POP recommendation). This yield was on par with the yield obtained in the treatment where only 1/2 the recommended level of P was used along with PB, FYM and mulch. The use of FYM and mulching was round to be an essential practice to obtain the maximum benefit from the use of PB. It may be concluded from the results of the study that for increasing the efficiency of utilization of applied P to banana in the acidic laterite soils, a combined application of MRP and PB along with FYM and mulch is essential. This package was found to be very effective in increasing the available- P status or soil, promoting plant growth and increasing the yield of banana with a lower level of P than what is recommended at present. For achieving a higher net return from banana cultivation along with other inputs like FYM and mulch, the use of 3/4 level of P and PB inoculation may be considered as a viable alternative to the present POP recommendation. " .. PhD 631.4 SHE/IN https://krishikosh.egranth.ac.in/handle/1/5810099452 https://krishikosh.egranth.ac.in/displaybitstream?handle=1/5810099452&fileid=be2f144e-dc06-44f2-b120-d6c96f986c11 https://krishikosh.egranth.ac.in/handle/1/5810099452 https://krishikosh.egranth.ac.in/displaybitstream?handle=1/5810099452&fileid=be2f144e-dc06-44f2-b120-d6c96f986c11 140128 20220217142230.0