The role of organic materials and partial acidulation in improving effectiveness of phosphate rock in gypsiferous soils | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 12, Issue 3, September 2012, Pages 163-171 | ||
| Author | ||
| N. M. Muhawish and E. E. Mohammed | ||
| Abstract | ||
| A pot experiment was conducted to determine the role of organic materials (plant & animal) applied with phpsphate rock (PR) and partial acidulation of PR (through mixing with water soluble phosphate fertilizer{TSP} in different ratios 50:50 and 60:40 TSP:PR in PR effectiveness (dry weight, P uptake, and available NaHCO3 extractable P). Wheat (Triticum aestivum )was used as a test crop in two gypsiferous soils(Tikrit and Dour). Results showed that the two treatments ( TSP50+PR50) and (TSP60+PR40) did not differ significantly (p<0.05) with TSP in plant weight, P conc. in plant and NaHCO3 extractable P (Olsen P). The treatment TSP60+PR40 was superior above TSP in plant height and P conc. in plant. Treatments of partial acidulation did not differ significantly in most of the studied characters. Organic materials treatments did not differ significantly in plant height, P conc. in plant and available P. The two soils did not differ significantly in plant height and available P in soil, while Tikrit soil was superior in dry weight, P conc. in plant and P uptake. The higher value for interaction in Tikrit soil for plant height character was for the treatment TSP60+PR40 which did not differ significantly with TSP and TSP50+PR50, while for dry weight character, P conc. in plant and available P the interaction treatment for Tikrit soil with TSP was superior but did not differ significantly with TSP60+PR40 and TSP50+PR50. The highest value for interaction for the two soils was TSP60+PR40 in Dour soil for plant height and available P in soil P. The performance of organic treatments did not differ for the interaction treatments significantly with partial acidulation treatments especially TSP50+PR50 for all of the studied characters. Phosphate rock alone gave the lowest values for all of the characters although it did not differ significantly with organic treatments or TSP50+PR50. We conclude from these results that we can compensate for 40 – 50 % of TSP applied to gypsiferous soils by application of PR, or application of PR plus organic wastes especially animal wastes. | ||
| Keywords | ||
| Organic; Partial; gypsiferous | ||
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