+44 3308180992 Research Article
Determination of Potassium Adsorption Isotherm and Its External and Internal Requirements for Optimum Yield of Wheat (Triticum aestivum L.) on Soils of Central Highlands, Ethiopia
Author(s): Getahun Alemayehu*, Asmare Melese and Wondwosen Tena
Low soil fertility is a major constraint that limits wheat production in Ethiopia. Application of Potassium (K)fertilizer in the area is limited. This study aimed to assess K status, adsorption capacity of soils andto determine K requirements for wheat. Eight Kebeles from the district were selected. Soil analysisshowed that pH of soils were ranged from neutral to strongly acidic; clayey in texture; low to moderate% OM and total N; moderate to high CEC; medium to very high Ca and Mg and medium to high contentsof K were recorded. The pot experiment laid out was in Complete Randomized Design (CRD) with threereplications using Danda’a wheat variety as a test crop. K was determined from filtrate of 2.5 g of soil in25 mL solutions of 0, 25, 50, 75, 100, 125, 150, 175, 200, 225 and 250 mg/L K. Soils of the experimentalsites showed different K adsorption characteristics and their adsorp.. View More»
DOI:
10.14303/2251-0044.2023.31