Phosphorus and potassium fertilization increase common bean grain yield in Mozambique

Abstract

There is little information about common bean fertilization in African Savannas. The objectives of this study were as follows: i) to evaluate the common bean yield potential in the environmental conditions of Lichinga, Niassa, Mozambique, and ii) to determine the common bean response to phosphorus and potassium fertilization applied together in order to verify whether the interpretation of soil analysis for the Brazilian Cerrado could be adopted for Savanna soils in Mozambique. The experimental design was a randomized block design in a 5 x 4 x 2 factorial arrangement. Treatments consisted of a combination of phosphorus doses (0, 35, 70, 140 and 280 kg ha-1 of P2O5), potassium doses (0, 50 100 and 200 kg ha-1 of K2O), and different growing seasons (2012/2013 and 2013/2014). The field rainfed experiments were conducted in Lichinga city, province of Niassa. Common bean crops presented high productivity potential in rainfed systems in the environmental conditions of Lichinga, Niassa, Mozambique, reaching grain yields of up to 3,600 kg ha-1 depending on the rates of fertilization with phosphorus and potassium. Common beans responded to phosphorus and potassium fertilization despite high contents of these nutrients in the soil, according to the interpretation of soil analysis for the Brazilian Cerrado. Maximum grain yield in the average of two growing seasons was estimated to occur for 239 kg ha-1 of P2O5 and 141 kg ha-1 of K2O, indicating that further calibration studies for P and K are required for this specific region of Mozambique.

Agronomic Practices to Increase the Yield and Quality of Common Bean (Phaseolus vulgaris L.): A Systematic Review

“…Abebe et al [142] recommended a combined P plus N amendment comprising 67 kg P 2 O 2 ha −1 and 27 kg N ha −1 = as an optimum fertigation scheme for high common bean yields under good soil moisture conditions, where better utilization of the fertilizer is achieved. Carvalho et al [143] concluded that the ideal P:K ratio requires more detailed investigation. Additionally, Bildirici et al [144] recorded a positive correlation between P inputs and crude protein content of grains.…”

Desempenho do feijoeiro cv. Pérola submetido a doses e épocas de aplicação de potássio foliar

“…Resultados semelhantes na produtividade foram encontrados por Nascente et al (2012) que testaram 19 cultivares de feijão de diferentes grupos (preto, carioca e especial), Research, Society andDevelopment, v. 9, n. 9, e363997298, 2020 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v9i9.7298 adubadas com diferentes doses de nitrogênio combinada com K. As maiores produtividades encontradas pelos autores foram com adubação nitrogenada seguida de adubação com K (60 kg ha -1 ) em cobertura, atingido produtividade de 3.130 kg ha -1 . Carvalho et al (2018) constataram em seus estudos que a produtividade de feijão aumenta com adubação potássica, atingindo rendimento máximo de grãos de 3.616 kg ha -1 com aplicação de 43 kg de K2O ha -1 . Em complemento, os estudos de Nascente et al (2012) mostraram que adubação de K, quando feita em cobertura, também resulta em incrementos na produtividade.…”

Dynamics of Macronutrient Uptake and Removal by Modern Peanut Cultivars

“…Another aspect is that peanuts manage to use the residual fertilizer from the previous crop, being excellent for crop rotations [28]. However, it is noteworthy that it is necessary to replace at minimum the nutrients exported with the grains, through the management of fertilization, for the maintenance of soil fertility [29] and sustainability of agricultural systems [30]. According to [9], the peanut cultivation system has been improved in the past few years, especially due to cultivars being more responsive to fertilizers and changes in management with crop rotation with sugarcane, favoring the potential of the crop production.…”