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Effect of Phosphorus Solubilizing Bacteria and Integrated Use of Organic and Inorganic P-Fertilizers on Wheat

Thesis Info

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External Link

Author

Islam, Muhammad

Program

PhD

Institute

The University of Agriculture

City

Peshawar

Province

KPK

Country

Pakistan

Thesis Completing Year

2019

Thesis Completion Status

Completed

Subject

Agricultural Technology

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/12342/1/Muhammad%20Islam%20PHD%20Thesis%2c%20Final%20Print.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676725985483

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The impact of integrated phosphorus (P) management and phosphorus solubilizing bacteria (PSB) on wheat crop was assessed in field experiments at Agronomy Research Farm, The University of Agriculture, Peshawar-Pakistan, for two consecutive years (2015-16 and 2016-17). Two factorial randomized complete block design (RCBD) with 4 replications was used in the experiments. Phosphorus solubilizing bacteria (with and without) and integration of mineral and organic P sources i.e. single superphosphate (SSP), poultry manure (PM) and farmyard manure (FYM) were tested in the experiments. The rate of phosphorus (75 kg ha-1) was maintained in all plots. Sole application of SSP produced maximum tillers m-2 (345) with earlier heading (110 days) and maturity (140 days) stage. More organic matter (1.19%), N (0.083%), P (4.30 mg kg-1), K (128.9 mg kg-1) and lower pH (7.64) of the soil were detected in plots treated with 100% P from FYM. Among P management ratios, 50% P from SSP + 50% P from PM or FYM had better impact on wheat crop than other ratios as well as sole application of FYM, PM and SSP. Significantly taller plants (98.8 cm) with maximum crop growth rate (17.1 g m-2 day-1), leaf area tiller-1 (118.5 cm2), leaf area index (3.98), spikes m-2 (297), grains spike-1 (48.9), thousand grains weight (42.98 g), biological yield (12391 kg ha-1), grain yield (4367 kg ha-1), harvest index (35.2%), grain N concentration (2.05%), straw N concentration (0.38%), crude protein (12.82 %), straw P concentration (0.17%), grain P concentration (0.38%), straw P uptake (13.7 kg ha-1), grain P uptake (16.5 kg ha-1), total P uptake (30.2 kg ha-1) and phosphorus use efficiency (25.3%) was recorded in wheat crop by the application of 50% P from PM + 50% from SSP. Enhanced leaves, stem, spikes and total dry weight (106.0, 419.8, 111.5 and 637.3 g m-2 respectively at heading stage and 78.8, 521.6, 643.8 and 1244.2 g m-2 respectively at physiological maturity stage) was maintained by wheat plants at 50% P from PM + 50% from SSP. Phosphorus solubilizing bacteria (PSB) significantly improved plant height (95.8 cm), leaf area tiller-1 (110.5 cm2), leaf area index (3.65), crop growth rate (16.3 g m-2 day-1), total tillers m-2 (328), spikes m-2 (276), grains spike-1 (46.7), thousand grains weight (41.47 g), grain yield (4014 kg ha-1), biological yield (11754 kg ha-1), harvest index (34.1%), grain N concentration (1.78 %), crude protein (11.15 %), straw P concentration (0.16 %), grain P concentration (0.36%), straw P uptake (12.5 kg ha-1), grain P uptake (14.6 kg ha-1), total P uptake (27.1 kg ha-1), phosphorus use efficiency (22.0 %), soil organic matter (1.04 %) and soil total P (3.69 mg kg-1). PSB application maintained higher leaves, stem, spike and total dry weight (103.7, 406.6, 109.2 and 619.5 g m-2 respectively) at heading stage and leaves, stem, spike and total dry weight (75.5, 495.8, 618.2 and 1189.5 g m-2 respectively) at physiological maturity stage. Delayed heading (114 days) and physiological maturity (144 days) with high soil pH (7.66) was recorded in plots not sown with PSB treated seeds. It is concluded that PSB in combination with 50% P from SSP + 50% from PM or FYM performed better as far as growth, yield characteristics and yield of wheat and in this manner prescribed for higher productivity of wheat crop in the agro climatic state of Peshawar-Pakistan.
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