Effect of Potassium Humate Application on Yield and Nutrient Uptake of Maize Grown In a Calcareous Soil

Abstract

Potassium humate (K-humate) is a promising natural resource to improve yield and nutrient uptake by crops. A field experiment was conducted to assess the efficacy of Khumate application in combination with chemical fertilizers on enhancing yield and nutrient uptake of maize grown in a calcareous soil, western of Nile Delta, Egypt in two successive summer seasons (2015 and 2016). The Khumate was applied at a rate of 15 kg ha -1 along with an increasing rate of chemical N, P and K fertilizers, varying from 0 to 125% of the recommended dose. The results indicated that grain yield of maize significantly responded to application of K-humate. The results also indicated that the computed optimum grain yield of 7463 kg ha -1 without application of K-humate can be obtained by applying 98% of the recommended dose of chemical fertilizers. However, in the presence of K-humate, the optimum yield of 8310 kg ha -1 can be obtained by applying about 73% of the recommended dose of fertilizers. Nutrients uptake responded linearly to the increasing rates of chemical fertilizers, without or with K-humate application. However, the rate of increase in the presence of K-humate was substantially higher than that recorded at its absence. The difference in the increase of nutrients uptake was the highest for P, then N and K in the presence of K-humate. This study suggests that K-humate has the potential to increase crop yield, nutrient uptake and reduce the amounts of applied chemical fertilizers in calcareous soils.

Studying the Effect of Magnetized Fulvate and Humate Solutions on Phosphorus Availability in Sandy Soil Cultivated by Faba Bean (Vicia Faba L.)

“…Different application rates of K-humate solution (0.5%, 1.0%, 0.4% (4 g L -1 )) were found to increase yield and yield components and plant growth parameters (Quilty &Cattle, 2011 andThakur et al, 2018). Additionally, K-humate improves soil physical, chemical properties and nutrient movements and reduces hard effects of salt stress Ali, 2018 andSherif &Hedia, 2015). Humate in sandy soil showed positive effect on available N, P, K nutrient, soil chemical properties and fertility (El-Etr and Hassan, 2017).…”

Improving of Hayany Date Palm Production by Using K-Humate as Soil Application and Magnetic Water Irrigation at South Sinai Governorate Egypt

“…On other hand, there was a positive relation with highly significant between RY% and OM%. In addition, K humate causes increased of growth and yield response due to effects of increased water holding capacity, nutrient availability, hormonal activity or microbial growth, and an increased organic matter mineralization as reported by Kumar and Singh (2017), Ibrahim and Ali (2018) and Abdeen (2020).…”

Influence of Integrated Nano-Calcium and K-Humate Foliar Spray on Growth, Yield and Fiber Quality of Cotton Grown in Alluvial Non-Saline Soil

“…Humic substances are natural organic substances derived from various sources that potentially impact their use in improving the physical, chemical and biological properties of soils, therefore increasing nutrients uptake and plant yield (Abd-All et al, 2017;Ibrahim and Ali, 2018;Tan, 2003 andNardi et al, 2002;Jones et al, 2007). Humic substances enhance cell membrane permeability and regulate carbon cycle, protein synthesis and activates biomass production (Eshwaret al, 2017 andUlukan, 2008).…”