Phosphorus Adsorption and Phosphorus Use Efficiency in Calcareous Alkaline Soils Influenced by Humic Acid
Journal Title: International Journal of Plant & Soil Science - Year 2016, Vol 12, Issue 1
Abstract
The effect of lignitic coal derived humic acid (HA) was evaluated on phosphorus adsorption and desorption capacity in calcareous alkaline soils collected from Research Farm of the University of Agriculture, Peshawar, Pakistan. The P adsorption capacity was determined by adding 0, 10, 20, 40, 60, 120, 240 and 360 mg P L-1 (initially P applied, IPA) to 5 g soil with absence (alone P) or presences of 0.15% HA (P+HA) solution in duplicate. The mixture was shaken on horizontal shaker for 30 h continuously followed by 5 min centrifugation at 2500 rpm to collect the aliquot/supernatant. The soils were then added 45 mL distilled water followed by same shaking and centrifugation for desorption studies. The P+HA treatments yielded significantly higher EPC (equilibrium phosphorus concentration) and lower P adsorption (x/m) at each level of IPA than alone P rendering that HA reduced the P adsorption. The P adsorbed (x/m) expressed in percent of IPA (Xad) and the ratio of x/m to ECP (Kd) simply decreased with each increments of IPA in case of alone P but first increased and then decreased in case of P+HA indicating different behavior of P in presences of HA solution. The higher Xad and Kd in case of alone P revealed its comparatively higher affinity and more adsorption of P at any levels of IPA than the soil which received HA treatments. Similarly, the P+HA treated soils produced comparatively higher desorption of P at any IPA than the alone P treated soils suggesting that HA not only reduces the adsorption but can also increase their release from the soil surfaces into solution. The alone P was best fit to Langmuir modified two surface model whereas the P+HA was best fit to Freundlich isotherm models. These results indicated that humic acid application can improve the P use efficiency in field condition through changings in dynamics of P sorption and hence should be applied for better crop nutrient management.
Authors and Affiliations
Muhammad Numan Khan, Dost Muhammad, Sajjad Raza, Abdul Haseeb, Mubasher Nasir, Asad Shah, Farmanullah Khan, Tanveer Ali
Keywords
Related Articles
- EP ID EP351425
- DOI 10.9734/IJPSS/2016/25805
- Views 102
- Downloads 0
Effect of Variety and Spacing on Growth and Yield of Maize (Zea mays L.) in Bauchi State, Nigeria
A field experiment was conducted at the Abubakar Tafawa Balewa University teaching and research farm Bauchi state of Nigeria, during the 2013 rainy season, to investigate the effect of variety and intra-row spacing on gr...
Preliminary Studies on Fruit Lignification Time Interval and Phenological Traits of Selected Okra (Abelmoschus esculentus L Moench) Genotypes Grown in Southern Nigeria
Aims: To determine the time interval between fruit formation and lignification (hardening of fruits) and phonological traits in three short, early maturing and three tall, late maturing genotypes of Okra (Abelmoschus esc...
Assessment of Some Tropical Plants for Use in the Phytoremediation of Petroleum Contaminated Soil: Effects of Remediation on Soil Physical and Chemical Properties
Field experiment was conducted in the Teaching and Research Farm of Enugu State University of Science and Technology in 2015 cropping season to evaluate the effectiveness of phytoremediation as a tool for cleaning up soi...
A Peptide Extract of Hydrolyzed Amaranth Globulin Induces Growth and Immunological Response in Tomato and Maize Plants
Aims: Evaluate the effect in growth and defense activation of a peptide extract from hydrolyzed globulin of Amaranth in tomato and maize plants. Study Design: Using different concentration of peptides we evaluated the p...
Genetic Diversity and Variability among Papaya (Carica papaya L.) Genotypes Using Multivariate Analysis
Multivariate analysis was used to group and study the pattern of genetic variability and relationship among ten papaya genotypes in Benin City, Nigeria. The experiment was conducted at the Teaching and Research Farm of t...