Organomineral Phosphorus Fertilization in the Production of Corn, Soybean and Bean Cultivated in Succession

Abstract

The use of organic waste in agriculture has been used aiming at greater productivity, decrease in the cost of production and sustainable use of resources. The present study aimed at evaluating the effect of phosphate fertilization with the maintenance of organomineral fertilizers, combining poultry manure and soluble or reactive phosphate, in the production of grains in corn culture and the residual effect for subsequent crops of beans and soybeans. The experiment was conducted in Sete Lagoas, MG, in 2015, using three fertilizers with sources of different phosphorus sources (triple super phosphate-STP, organomineral with STP and organomineral with Bayovar phosphate) applied at the doses of 65, 130, 195 and 260 kg•ha −1 of P 2 O 5 total, and compared to the control without phosphate fertilization. We evaluated the contents of foliar P, P accumulation in the grains, yields of corn grains, beans and soy, accumulated productivity and export of accumulated P of the three cultures. The three cultures assessed presented higher productivity when compared to the average of the factorial treatments that received phosphate fertilization relative to the control. Organomineral fertilizers increased grain production, obtaining average productivity equal to or greater than those obtained with the exclusive use of STP.

Response of the Bacterial Communities Associated With Maize Rhizosphere to Poultry Litter as an Organomineral Fertilizer

“…We observed a positive effect on phytase activity when 260 kg STP with PL was used, at both sampled time-periods (i.e., 60 and 90 days after sowing). This higher phytase activity (shown in Figures 5A,B) may have contributed to the increased productivity reported by Martins et al (2017). However, no clear differences were observed among the different fertilizer regimes in terms of phosphatase activity at either pH 6.5 or 11 ( Figures 5C-F).…”

“…Concomitantly to the current study, Martins et al (2017) determined the effects of added fertilizer on different plant parameters, such as plant height, stem diameter and number of grains per row in the same experimental area. That study FIGURE 5 | (A) Phytase activity, measured 60 days after sowing maize; (B) Phytase activity, measured 90 days after sowing maize; (C) Phosphatase activity in pH 6.5, measured 60 days after sowing maize; (D) Phosphatase activity in pH 6.5, measured 90 days after sowing maize; (E) Phosphatase activity in pH 11.0, measured 60 days after sowing maize; and (F) Phosphatase activity in pH 11, measured 90 days after sowing maize.…”

“…N and/or K fertilizer was applied manually using 300 kg/ha of an NPK formula (20-00-20). Details of the experimental set-up have been described previously (Martins et al, 2017).…”

“…An alternative way to improve the physical and biological properties of soil and consequently to increase crop yields is to use organic fertilizers (alone or in combination with mineral fertilizers), such as animal litter, green manure or compost (Melkamu, 2012). The efficacy of organic fertilizers for improving maize growth, grain and dry matter yields, and/or harvest index has previously been demonstrated (Ademba et al, 2014(Ademba et al, , 2015Kidinda et al, 2015;Martins et al, 2017;Baghdadi et al, 2018).…”

Tópicos em Agroecologia - Volume 2

“…O processo de adsorção de P pelos oxidróxidos de ferro e alumínio é um dos principais fatores envolvidos na insolubilização desse nutriente, transformando o P lábil em não lábil nos solos tropicais (NOVAIS et al, 2007;RAIJ, 2011). Nestas condições, o solo atua como dreno e não como fonte de P para as plantas (NOVAIS et al, 2007), sendo necessária a aplicação de quantidades de fertilizantes fosfatados acima da exigência das culturas (MENEZES-BLACKBURN et al, 2016).…”