Evaluation of various concentrations of ammonium acetate in potassium extraction and its critical levels determination in some of paddy soils
Journal Title: International Journal of Farming and Allied Sciences - Year 2018, Vol 7, Issue 1
Abstract
An investigation was undertaken to evaluate different concentrations of extractant ammonium acetate (NH4OAc) for available potassium and critical levels of potassium for wetland rice soils of Guilan province in north of Iran. Some 35 soils from 0-30 cm depth were collected from different location paddy soils. Potassium in the soils was extracted with normal ammonium acetate. Based on soils were grouped in low, medium and high potassium. Finally, 19 soil samples were selected for micro plot experiment. Micro plot experiment with 2 treatment (0 and 250 mg K kg-1 of soil) and 3 replicates was performed. In this experiment, concentrations 0.1, 0.25, 0.5 and 1M extractant ammonium acetate were used for extraction potassium. Results showed that in most soils K application increased grain and straw yield and K uptake in rice plant. High correlation were observed between different concentrations of extractant ammonium acetate (NH4OAc) with K uptake and concentration in rice plant and provided useful indicators for evaluating K. The critical level of soil K was determined graphical method (Cate and Nelson). For rice, the values of critical limit were 120,119,109 and 105 mg kg-1 for concentrations 1, 0.5, 0.25 and 0.1 M extractant ammonium acetate respectively.
Authors and Affiliations
Hassan Shokri Vahed
Keywords
Related Articles
- EP ID EP32906
- DOI -
- Views 350
- Downloads 0
Effective factors that influence agricultural sustainability-A case study of the Greater Dezful rural system in Iran
Agricultural sustainability is emerging as one of the pre-requisites for socio-economic and rural regeneration. This is to ensure crop production while taking appropriate measures to protect the environmental integrity...
ROS in Plant Cell: a Review
Oxidative stress is induced by a wide range of environmental factors including UV, Pathogen, Herbicide action and Oxygen shortage. Oxygen deprivation stress in plant cell is distinguished by the three physiologically d...
Fine Mapping of Quantitative Trait Loci for Grain Weight in Rice (Oryza sativaL.): a review
Rice is staple food for more than half of the world’s population . Along with improvements in the standard of living, the demand for superior grain quality with high grain yield is increasingly becoming a priority issu...
Comparative analysis of the aroma chemicals of Mentha piperita L. using hydrodistillation and CombiPAL system techniques
Aerial parts of Mentha piperita L. (Peppermint) were subjected to headspace and hydrodistillation techniques after drying, then headspace volatiles and the essential oil were analyzed by GC/MS. 50 and 40 constituents we...
The effect of osmo-priming on morphological, physiological characteristics and biochemical changes of Ocimum basilicum under drought stress
Seed priming technique has been known as a challenge to improve germination and seedling emergence under different environmental stresses. One of the effects of reducing water content on soil is reduction of growth and...