Evolution of Nutrients and Soil Chemical Properties of Seven Organic Fertilizers in Two Contrasting Soils Under Controlled Conditions

Abstract

Organic food production has increased the demand for organic supplies in agriculture. Organic fertilizers are known to have an effect on crop and soil properties, but this effect has been little studied. This research evaluated the effect of seven nitrogen fertilizers allowed for use in organic production and one conventional fertilization treatment adjusted to a similar dose of total nitrogen (N), on chemical properties of two soils of contrasting physicochemical properties (sandy loam Mollisol and silty loam Andisol) incubated under aerobic conditions and controlled 6 times over 112 d. Treatments were: Compost (CO), Fertil (F), Purely Grow (PG), Purely Lysine (PL), Blood meal (BM), Lupine meal (LM), Sodium nitrate (SN), conventional fertilization (CF), and a control without fertilization (CT). The experiment was conducted in a split-plot design for each soil. The results showed that the fertilizers affected soil pH, salinity (electrical conductivity, EC), and the concentrations of phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg) and sulfur (S). In general, the highest values of pH, available P, and exchangeable K, Ca and Mg were obtained using CO in both soils, whereas PL reported the lowest values for most parameters evaluated. The evolution of each parameter over time showed interactions with the fertilization treatment, with a steady decrease in pH and an increase in EC in both soils. Differences in the average values of chemical properties during incubation with respect to their initial values were related to the physicochemical and organic characteristics of each soil.

Effects of Complex Fertilizers on the Properties of Grey Forest Heavy Loamy Soil

“…The global processes of organic matter decomposition in soils and the vital activity of microorganisms cause the annual release of 220 billion tons of carbon dioxide into the atmosphere [ 21 ].…”

“…Studies by many scientists [ 19 , 30 – 33 ] showed a similar relationship between the chemical and physical properties of soils and quantitative yield assessment under the influence of complex fertilizers. Experiments by Maltas et al [ 34 ] (Switzerland) and Hirzel et al [ 21 ] conducted under controlled conditions in a Chile laboratory indicate that the application of organic fertilizers had different effects on soil pH, soil salinity, and concentrations of phosphorus, potassium, calcium, magnesium, and sulfur in loamy and sandy loam soils. When using complex fertilizers, the level of CO 2 release and the increase in soil acidity were the highest compared to simple biofertilizers.…”

Synergistic effect of arbuscular mycorrhizal fungi and poultry manure to significantly increase proximal structure and physiological parameters of Cucurbita maxima and Telfairia occidentalis under soil salinity

“…), maintain the balance of soil nutrient, improve nutrient absorption, increase root vitality, increase fertilizer retention, enhance yields, and participate in the addition of organic matter to organically-deficient soils (Mufwanzala and Dikinya 2010;Revell et al 2012;Awad 2016;Pandian et al 2016;Sikder et al 2019;Sistani et al 2019;Solaiman et al 2020;Zhang et al 2020;Sallam et al 2021). Hirzel et al (2018) showed that the highest values of available P and exchangeable K, S, Ca and Mg were obtained using poultry manure in saline soil, whereas pH and salinity (electrical conductivity) reported the lowest values. Adeleye et al (2010) documented that poultry manure application enhanced soil physicochemical properties by decreasing soil bulk density and temperature, and increasing exchangeable Ca, Mg, K, total porosity, soil moisture retention capacity, total N, soil organic matter, available P and lowered exchange acidity under salinity conditions.…”

The Influence of Fertilisation on the Yield and Antioxidant Capacity of Common and Tartary Buckwheat

“…Organic fertiliser positively impacts soil structure and contains all macro and micronutrients. However, the main disadvantages of organic fertilisers are their lack of nutrients and the slow decomposition of organic materials (Hirzel et al, 2018;Yürürdurmaz, 2022). On the other hand, mineral fertilisers are available to plants and contain significant concentrations of macronutrients, allowing for excellent yields.…”