International Scholarly Research Notices / 2012 / Article / Tab 2

Research Article

Effects of Organic and Inorganic Materials on Soil Acidity and Phosphorus Availability in a Soil Incubation Study

Table 2

The experimental treatments.

TreatmentP sourceP rate (kg ha−1)
From organics From inorganicsTotal P

(1) Control 0 0 0
(2) Tithonia (60 kg P ha−1)Tithonia 60 0 60
(3) FYM (60 kg P ha−1)FYM 60 0 60
(4) MPR (60 kg P ha−1)MPR 0 60 60
(5) TSP (60 kg P ha−1)TSP 0 60 60
(6) BPR (60 kg P ha−1)BPR 0 60 60
(7) Tithonia (20 kg P ha−1) + MPR (40 kg P ha−1)Tithonia and MPR 20 40 60
(8) Tithonia (20 kg P ha−1) + (TSP 40 kg P ha−1)Tithonia and TSP 20 40 60
(9) Tithonia (20 kg P ha−1) + BPR (40 kg P ha−1)Tithonia and BPR 20 40 60
(10) FYM (20 kg P ha−1) + MPR (40 kg P ha−1)FYM and MPR 20 40 60
(11) FYM (20 kg P ha−1) + TSP (40 kg P ha−1)FYM and TSP 20 40 60
(12) FYM (20 kg P ha−1) + BPR (40 kg P ha−1)FYM and BPR 20 40 60
(13) Tithonia (20 kg P ha−1)Tithonia 20 0 20
(14) FYM (20 kg P ha−1)FYM 20 0 20
(15) MPR (40 kg P ha−1)MPR 0 40 40
(16) TSP (40 kg P ha−1)TSP 0 40 40
(17) BPR (40 kg P ha−1)BPR 0 40 40

FYM: farmyard manure; TSP: triple superphosphate; MPR: Minjingu phosphate rock; BPR: Busumbu phosphate rock.

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