<b>Application of lime, phosphogypsum and fertilization rates affect soil fertility and common bean development in no-tillage system in a Cerrado Oxisol

Abstract

There is a lack of information about the effects of interactions among lime, phosphogypsum (PG) and fertilization on soil fertility and their effects on common bean yields in the tropics. This study aimed to determine the effects of annual application of PG and limestone and rates of fertilization on the chemical attributes of soil, fertilization efficiency, yield components and the grain yield of the common bean. The study was performed for three growing seasons in an acidic Oxisol. The experimental design was randomized blocks in a 4x4 factorial scheme. The treatments consisted of lime, lime + PG, PG, and control (without corrective application) with four fertilization rates. In an acidic and low-fertility Cerrado soil, limestone or limestone + PG applied annually at 1/3 of the total rate in a no tillage system increased the common bean yield and the efficiency of the fertilization, although the improvement of the soil acidity indicators did not reach the desired levels. The application of soluble fertilizers to provide adequate and balanced amounts of nutrients provided greater yield gains and improved soil fertility compared to surface liming without fertilization, but the combination of the two practices resulted in the greatest benefits to both plant and soil fertility.

Nitrogen Fertilization Management with Blends of Controlled-Release and Conventional Urea Affects Common Bean Growth and Yield during Mild Winters in Brazil

“…These factors probably contributed to accelerating the decomposition and mineralization of soil organic matter [46] and increasing the plant N uptake, dry matter accumulation and yield in 2019. Limestone also improved common bean yield during three growing seasons in the Cerrado region in Brazil [47]. Ammonia volatilization reached 11 kg ha −1 under the broadcast-applied 30%PSCU + 70%U treatment, which was 3 kg ha −1 more than that under 70%PSCU + 30%U, and ammonia volatilization increased after the first precipitation event in the growing season (4 mm, in 2018).…”

Low-Carbon Sustainable Composites from Waste Phosphogypsum and Their Environmental Impacts

“…The addition of PG can mitigate the acidity of the soil by declining the Al 3+ and increase the Ca 2+ content. Another study demonstrates that the application of PG mixing with lime is beneficial to neutralize the acidity of the soils and enrich the root development due to the enrichment of Ca content in the deep soils [78]. Similar to the sodic soils, the application rate of the PG is also a critical factor that determines the effect of the modification.…”

Response of Common Bean Cultivars and Lines to Aluminum Toxicity

“…Aluminum (Al) toxicity is one of the most limiting factors to plant development, especially in acid soils [5]. Approximately one-third of the common bean-producing areas in Brazil are located in regions with sandy soil, low fertility, and high acidity and Al concentration, negatively affecting the plant development and causing yield losses [6][7][8][9].…”