The Effects of Inorganic Fertilizer and Mineral Leucite Residues on K Uptake and Maize Yields (Zea mays L.) in Oxisols

Abstract

<p>The purpose of this study was to determine the effect of inorganic fertilizer and leucite mineral residues on K uptake and maize yields. This research had been conducted from October 2016 to September 2017 in the experimental field of Neglasari, Dramaga, Bogor. The soil was analyzed in the Soil Chemistry and Fertility Laboratory of Sebelas Maret University, Surakarta. The study was arranged in a completely randomized block design using 11 treatments with three replications. The result showed that the NPK 150 kg ha<sup>-1</sup> residues gave a better effect on corn yields whereas there was no significant effect of employing the standard NPK with RAE value of 123%. The study found that the residual treatment of inorganic fertilizers and leucite minerals had a significant impact on maize yields but not on K uptake.</p>

A Study the Relationship of Soil Quality with Land Suitability for Coconut (Cocos nucifera L.) Development in Kebonagung Sub-district, Pacitan District

“…N ranged from 0.16 -0.21%, classified as moderate to high. P-available went from 6.93 -18.02 ppm, [7] explained that P in the soil could be sourced from P-inorganic and organic P, the availability of P is closely related to soil use, fertilization, and organic. Affairs.…”

“…[12] explains that the maximum availability of P is found in the pH range between 5.5 -7. The availability of P decreases at a soil pH lower than 5.5 or higher than 7 due to P fixation by acidic or basic cations, at low pH, the availability of P is lower this is because P in the soil is in a fixed form in the form of Al-P, Fe-P, Ca-P, and P-bound [7,13,14] The availability of K is affected by the saturation of Ca + and Al 3+ , in the acid soil reaction, the soil colloid will be saturated with acidic cations (Al 3+ ), while in the alkaline soil reaction, the colloidal soil will be saturated with cations (Ca + ). Thus, K can be adsorbed by Ca + and Al 3+ so that the available K becomes limited.…”

Study the Relationship of Soil Fertility with Land Suitability For Arabica Coffee (Coffea arabica L.) Development in Bandar Sub-district, Pacitan District

“…CEC is strongly influenced by parent material, soil texture and soil pH. The addition of materials can increase the cation exchange capacity (CEC) because the decomposition of organic matter will release organic acids containing reactive functional groups, functional groups act as a negative source of soil [13]. Base saturation (BS) is closely related to soil pH, at an acidic pH, the colloid adsorption complex is filled with acidic cations (Al 3+ and H + ) at a specific concentration, AL 3+ can cause toxicity to plants, at an alkaline pH, the colloid adsorption complex is filled with basic cations (Ca 2+ , Mg 2+ , K + , and Na + ), showed an analysis which showed that the base saturation ranged from 30.87 to 52.04.…”

The Influence of Soil Nutrients Availability on Banana Bunchy Top Disease Incidence in Banyumas Regency, Central Java Province, Indonesia

“…Also, K is a constituent of plant structures and has regulatory functions in several biochemical processes associated with protein synthesis, carbohydrate metabolism and enzyme activation (Hasanuzzaman et al, 2018). Potassium plays a prominent role in enhancing the quality of crops by improving the physical performance, disease resistance, and post-harvest performance of fruits and vegetables for human consumption (Prajapati and Modi, 2012;Wang et al, 2013;Hartati et al, 2018). Potassium is particularly important in photosynthesis, translocation of photosynthates, regulation of stomata movement, phloem transport, yield, quality and stress resistance of crops (Hou et al, 2019).…”