Fertigação do algodoeiro utilizando efluente doméstico tratado

Neto, O.N. Sousa; Filho, Jerônimo Andrade; Dias, Nildo da Silva; Rebouças, J. R. L.; Oliveira, Francisco Ronaldo Alves de; Diniz, Adriana Araújo

doi:10.1590/s1415-43662012000200011

Cited by 10 publications

(5 citation statements)

References 8 publications

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“…This result indicates that only irrigation with 100% ETC caused an accumulation of nutrients with no need for mineral supplementation under the studied conditions. Similar results have also been found by [17] and [15], who observed that irrigation with wastewaters can replace mineral fertilization, because they provide sufficient amounts of nutrients for plants.…”

Section: Accumulation Of Dry Masssupporting

confidence: 87%

“…The increase in SDM caused by the factor irrigation depth (L) may result from the accumulation of nutrients present in the treated domestic wastewater such as N, P and K (mean concentrations of 126.0, 13.7 and 43.6 mg L -1 , respectively) and of photoassimilates during photosynthesis [17,19]. As observed, greater water availability increases stomatal opening, favoring the entry of CO2 in the mesophyll, thus enhancing photosynthesis [18].…”

Section: Accumulation Of Dry Massmentioning

confidence: 99%

“…In cotton, studies on the use of treated domestic wastewater have allowed the saving of nutrients applied through mineral fertilization and led to higher growth and biomass accumulation in this species [17,15].…”

Section: Introductionmentioning

confidence: 99%

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Agronomic performance of colored cotton influenced by irrigation with treated domestic sewage and potassium fertilization in semi-arid region of Brazil

Lima

Silva

Bezerra

et al. 2019

DYNA

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This study evaluated the contribution of potassium (K) nutrition and application of wastewater depths to the agronomic performance of colored cotton. Treatments consisted of five irrigation depths (50, 75, 100, 125 and 150% of crop evapotranspiration -ETC) and five K doses (0, 50, 100, 150 and 200% of the recommendation for the crop) and an absolute control irrigated with 100% ETCwater depth and fertilized with 100% N-P-K recommendation. Each treatment and the control had four replicates. Plant height, stem diameter, leaf area and shoot dry matter accumulation of cotton were evaluated at 130 days after emergence (DAE), whereas seed cotton weight was evaluated at 135 DAE. Our findings indicate that the use of treated domestic sewage for 100% ETCreplacement promotes greater gains of weight and growth in colored cotton without the need for K fertilization, evidencing the potential of wastewater for colored cotton for sustainable agriculture.

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Section: Accumulation Of Dry Masssupporting

confidence: 87%

Section: Accumulation Of Dry Massmentioning

confidence: 99%

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Agronomic performance of colored cotton influenced by irrigation with treated domestic sewage and potassium fertilization in semi-arid region of Brazil

Lima

Silva

Bezerra

et al. 2019

DYNA

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“…For the number of pods per plant, the renewable system with no fertiliser (S2A0) proved to be the same as the conventional system with mineral fertiliser (S1A1), which suggests that the nutritional contribution of the wastewater can completely replace mineral fertiliser in the cowpea crop. Sousa Neto et al [38] found that treated domestic effluent completely replaced mineral fertiliser when growing cotton. Freitas et al [13], growing cowpea (Vigna unguiculata (L.) Walp.)…”

Section: Source Of Variationmentioning

confidence: 99%

Production Indicators in Cowpea as a Function of the Water–Fertiliser Nexus

et al. 2019

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The bean is an important crop in feeding the global population. In the northeast of Brazil, it is of particular importance, since it is a staple food, which also generates employment and income. The low productivity of the northeast in recent years due to the water crisis combined with the cost of energy has compromised technical and economic viability. This study aimed to evaluate production parameters of cowpea (Vigna unguiculata (L.) Walp.) under different alternative production systems in the northeast of Brazil. The study was carried out in the experimental area of the sewage treatment plant (STP) in the district of Tianguá, Ceará. The experiment comprised six production systems (treatments) divided into split plots distributed in a completely randomised design with fifteen replications. The systems irrigated with wastewater and amended with different of fertilisers were no fertiliser (S2A0), mineral fertiliser (S2A1) and organic fertiliser (S2A2), as well as systems irrigated with drinking (S1A0, S1A1 and S1A2). It was found that under the systems irrigated with wastewater, the average productivity was 1468.8 kg ha−1, whereas under the systems irrigated with drinking water, it was 984.1 kg ha−1. The production systems that used wastewater (S2A0, S2A1 and S2A2) resulted in greater productivity compared to the production models irrigated with drinking water with organic fertiliser (S1A2) and with no fertiliser (S1A0). All the production models irrigated with wastewater yielded similar results to the conventional system with mineral fertiliser, showing that treated wastewater contains sufficient nutrients to potentially replace mineral fertilisers in cowpea production in the northeast of Brazil. The use of treated domestic effluent increases the productivity of irrigated crops.

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“…So much so, that it has increasingly being used in irrigated cultivations. Studies have already shown that the use of treated effluents in agriculture can increase agricultural productivity up to 60%, because of its considerable N (both organic and mineral), Ca, Mg and P contents (Almeida et al, 2012;Ludwig et al, 2012;Sousa Neto et al, 2012;Blum et al, 2013).…”

Section: Introductionmentioning

confidence: 99%