Coffee Yield and Phosphate Nutrition Provided to Plants by Various Phosphorus Sources and Levels

Abstract

Phosphorus (P) is considered one of the nutrients that most limits crop yields, especially in soils with an advanced degree of weathering. To evaluate P dynamics and availability in soil resulting from various P doses and sources and to assess the resulting P content of coffee leaves and the final coffee yield, an experiment was conducted in the municipality of Três Pontas, MG, Brazil, in a Red Argisol (Ultisol) area. Fertilization, except for P fertilization, was performed based on the soil analysis results. The annual P doses tested were 0, 75, 150, 300, 450 and 600 kg ha-1 P2O5. Two P sources, simple superphosphate and magnesium thermal phosphate, were evaluated and compared in the study. A physicochemical analysis of the soil and an analysis of leaf dry matter were performed. The available P content in the soil increased as a result of the applications of the two sources. The leaf P levels stabilized at approximately 1.8 and 1.9 g kg-1 for simple superphosphate and magnesium thermal phosphate, respectively, as a result of the application of approximately 300 kg ha-1 P2O5. The coffee responded to P fertilization in the production phase. Averaged over three harvests, the yield per harvest showed gains of 45.3% and 40.3% for simple superphosphate and magnesium thermal phosphate, respectively, with the application of the highest studied dose, 600 kg ha-1 P2O5.

Alguns modelos para a estimação do tamanho de parcelas em experimentos

“…These results are more consistent with commonly used plot sizes, such as by Firmino et al (2012) who used nine plants; Santinato et al (2014) and Dias et al (2015), plots formed by eight coffee seedlings, and by Pereira et al (2017) with seven plants. The results of plot sizes (PS) obtained by the different methods also do not differ from those found in other crops or experiments, such as Henriques Neto et al (2009), in the estimation of PS for irrigated wheat production, Paranaíba et al (2009), in the proposition of the CV model and Brito et al (2012), in the estimation of PS for plant height in papaya.…”

Korelasi Antara Ketinggian Tempat, Sifat Kimia Tanah, dan Mutu Fisik Biji Kopi Arabika di Dataran Tinggi Garut

“…Unsur P sangat diperlukan pada awal perkembangan tanaman dan menentukan produktivitas tanaman kopi (Silva & Lima, 2014;Dias, Neto, Guimarães, Reis, & de Oliveira, 2015). Keberadaannya dalam jaringan tanaman mempengaruhi penyerapan unsur penting lain yang menentukan dalam proses pertumbuhan dan perkembangan tanaman kopi selanjutnya (Silva, Lima, & Bottega, 2013).…”

Efecto de bacterias solubilizadoras de fosfatos sobre el desarrollo de plántulas de café.

“…El contenido de P en las hojas de los almácigos de café en cada tratamiento se consideró apropiado y superó los resultados de P foliar reportados por otros autores (Mills y Jones, 1996;Malavolta et al, 1997;Guimarães et al, 1999;Martínez, 2004;Silva y Lima, 2014;De Lima et al, 2015;Dias et al, 2015).…”