Surface Application of Lime on a Guava Orchard in Production

Abstract

Several complications can arise, either directly or indirectly, from implementation of measures to correct soil acidity in established fruit orchards, such as impaired roots, lower root volume, risk of plant infection, propagation of diseases, promotion of pest development (especially nematodes), and soil disaggregation and compaction. These factors can have a negative effect on crop yield. Therefore, it becomes critical to implement an effective method of neutralizing soil acidity, especially at the level of the tree roots. To assess the effect that the rates and forms of limestone applied on the soil surface have on soil fertility and on nutrition and yield of guava, an experiment was conducted in a commercial orchard. A randomized block experimental design was implemented with three replicates consisting of two forms of limestone [common limestone with relative neutralizing value (RNV) = 80 % and calcined limestone with RNV = 131 %], which were applied at five different rates (0, 0.5, 1, 1.5, and 2 times the recommended rate to raise the V value to 70 %), without incorporation. Liming with common or calcined limestone caused a drop in soil acidity in the 0.00-0.10 m layer at 6, 12, and 24 months after application. Soil acidity decreased in the 0.10-0.20 m layer at 6 and 12 months after use of calcined limestone, and at 24 months after liming with the common form of limestone. The chemical composition (N, P, K, Ca, Mg, S, B, Cu, Fe, Mn, Zn) of leaves was not affected at 14 months after surface liming treatments, nor the chemical composition of fruit at 20 months after the treatments. Guava yield was not affected by surface liming.

Root-Associated Microbiota Response to Ecological Factors: Role of Soil Acidity in Enhancing Citrus Tolerance to Huanglongbing

“…These environmental factors can have a positive correlation with the infection risk, propagation, and development of plant diseases caused by poor plant vigor (Larkin, 2015). Previous studies have shown the application of limestone can improve soil nutrient status, reduce soil acidification and neutralize toxic aluminum in both annual and perennial planting systems (Natale et al, 2012;Corrêa et al, 2018;Li et al, 2019;Lauricella et al, 2021). Combined with our research results, we believe that amending soil acidification can help optimize the soil nutrient status of citrus orchards and mitigate HLB disease progress.…”

Incubação De Calcário Finamente Moído E Características Químicas Do Solo Sob Cultivo De Soja E Milho

“…Estes valores, se comparados ao valor teórico, que poderiam ser obtido pela recomendação [NC=(V2-V1)*T/PRNT)], são menores. Para o calcítico, o valor obtido é ~7% menor que o calculado para a maior dose e, para o dolomítico é cerca de 20% menor, demonstrando que o V% estimado normalmente não é atingido, mesmo em condições controladas e com calcário extremamente fino, de alta reação, o que já foi apontado em outros estudos (GUARÇONI;SOBREIRA, 2017;CORRÊA et al 2018;LANGE et al, 2021).…”

“…Fonseca (2000) observaram aumento da concentração de Mg nas folhas de soja para o uso de doses de calcário dolomítico em plantio direto e ausência de efeito para o Ca no tecido, explicado pelo alto teor de Ca no solo. Corrêa et al (2018), não verificaram alterações na concentração de nutrientes nas folhas ou frutos de goiabeira, testando doses e granulometrias de calcário, atribuindo este efeito ao tempo decorrido da aplicação e a espécie em questão, já que o solo dos autores também respondeu as doses dos corretivos.…”

Forms of lime application and use of phosphogypsum in low acid soil in southern Brazil: soybean-wheat yield and soil chemical properties

“…In the areas where the lime was applied on the surface and without incorporation, the reaction was slower because it concentrated the entire dose on the surface and because the lime solubility is low (0.014 g L -1 ). The reaction of the lime applied on the surface without incorporation can take from 15 to 36 months (Oliveira et al, 1997); however, it depends on variables such as rainfall, soil texture and porosity, particle size, and lime reactivity, as well as on the plant material present in the soil or on its surface (Corrêa et al, 2018).…”

“…In our study, prior to experiment implementation, the pH was 5.25 in the 0.00-0.20 m layer, which might have contributed to the increase in soil pH up to 0.30 m depth. The efficiency of SL in subsurface layers depends on several factors, such as rainfall, soil texture, porosity, particle size, lime reactivity, presence of plant residues, and time (Corrêa et al, 2018). Under tropical conditions in Brazil, Tiritan et al (2016) monitored the chemical properties of soil at 6, 12, and 18 months after liming and observed that SL exerted similar effects to IL, increasing pH levels in 0.00-0.30 m soil layer, as observed in our study.…”