Nara Cristina de Lima Silva (original) (raw)
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Instituto Federal de Educação, Ciência e Tecnologia do Triângulo Mineiro - IFTM
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Papers by Nara Cristina de Lima Silva
Revista Agrogeoambiental
Pig breeding generates waste that, if not handled correctly, can cause serious environmental prob... more Pig breeding generates waste that, if not handled correctly, can cause serious environmental problems. The application of these residues in the soil appears as a sustainable alternative, since the manure, being rich in organic matter and mineral nutrients, promotes the improvement of the physical, chemical and biological quality of the soil avoiding the contamination of natural resources if it is released in the water or directly on the ground without proper treatment. The objective of this study was to evaluate the development of banana seedlings fertigated with pig slurry (PS) analyzing its efficiency compared to conventional treatment (chemical). The experiment was carried out in a completely randomized design with six treatments and six replications (3 seedlings per repetition), the doses being defined based on the fertilizer recommendation for the production of banana seedlings and the nutrient in greater concentration in the manure, which, in this case, was nitrogen, consider...
Bioscience Journal
In Brazil’s food industry, dairy production is one of the most important sectors, whose most rele... more In Brazil’s food industry, dairy production is one of the most important sectors, whose most relevant byproduct is whey. Due to the difficulties of reuse and environmental impacts caused when discarded as effluent in water bodies, an alternative for its final destination would be the application of this residue in the soil. The purpose of this study was to determine chemical changes and mobility and distribution of solutes in the soil after applications of whey rates, as well as to analyze the leachate collected after each application. The test was carried out in a laboratory, in PVC columns filled with soil. The treatments consisted of 2 x 2 samples of a typical dystrophic Red-Yellow Oxisol (Oxisol) and a typical dystrophic fluvic Inceptisol (Inceptisol), sampled in the layers 0- 20 and 20-40 cm. Each experimental unit consisted of 11 PVC rings (diameter of 6.6 cm, height of 7 cm). The columns were arranged in a randomized complete block design with five replications. Four whey r...
A center pivot system can irrigate an entire field. By observing the operation of a conventional ... more A center pivot system can irrigate an entire field. By observing the operation of a conventional center pivot irrigating an adult coffee crop, it is possible to identify accumulation of water at the ends of plant canopies rather than the central region between the lines. We determined the influence of coffee plant interception on the irrigation depth from a conventional center pivot system. We refer to this as the “shadow effect.” In addition, the study aimed to provide the economy of water resources and energy due to the “shadow effect”. The experiment was conducted in an area of 115.33ha planted with two varieties of Arabica coffee (Cofeea arabica) which was collected by center pivot spraying water under the plant canopy and the lines. The resulting data were analyzed by descriptive analysis and variance analysis using the Action tool. The results showed that the irrigation depth intercepted
by the coffee canopy was 30.4% greater than the actual depth from the irrigation system confirming the “shadow effect” and therefore the possibility of water resources and power saving.
Palavras-chave: Irrigação. Manejo sustentável. Economia. Cafeicultura.
Revista Agrogeoambiental
Pig breeding generates waste that, if not handled correctly, can cause serious environmental prob... more Pig breeding generates waste that, if not handled correctly, can cause serious environmental problems. The application of these residues in the soil appears as a sustainable alternative, since the manure, being rich in organic matter and mineral nutrients, promotes the improvement of the physical, chemical and biological quality of the soil avoiding the contamination of natural resources if it is released in the water or directly on the ground without proper treatment. The objective of this study was to evaluate the development of banana seedlings fertigated with pig slurry (PS) analyzing its efficiency compared to conventional treatment (chemical). The experiment was carried out in a completely randomized design with six treatments and six replications (3 seedlings per repetition), the doses being defined based on the fertilizer recommendation for the production of banana seedlings and the nutrient in greater concentration in the manure, which, in this case, was nitrogen, consider...
Bioscience Journal
In Brazil’s food industry, dairy production is one of the most important sectors, whose most rele... more In Brazil’s food industry, dairy production is one of the most important sectors, whose most relevant byproduct is whey. Due to the difficulties of reuse and environmental impacts caused when discarded as effluent in water bodies, an alternative for its final destination would be the application of this residue in the soil. The purpose of this study was to determine chemical changes and mobility and distribution of solutes in the soil after applications of whey rates, as well as to analyze the leachate collected after each application. The test was carried out in a laboratory, in PVC columns filled with soil. The treatments consisted of 2 x 2 samples of a typical dystrophic Red-Yellow Oxisol (Oxisol) and a typical dystrophic fluvic Inceptisol (Inceptisol), sampled in the layers 0- 20 and 20-40 cm. Each experimental unit consisted of 11 PVC rings (diameter of 6.6 cm, height of 7 cm). The columns were arranged in a randomized complete block design with five replications. Four whey r...
A center pivot system can irrigate an entire field. By observing the operation of a conventional ... more A center pivot system can irrigate an entire field. By observing the operation of a conventional center pivot irrigating an adult coffee crop, it is possible to identify accumulation of water at the ends of plant canopies rather than the central region between the lines. We determined the influence of coffee plant interception on the irrigation depth from a conventional center pivot system. We refer to this as the “shadow effect.” In addition, the study aimed to provide the economy of water resources and energy due to the “shadow effect”. The experiment was conducted in an area of 115.33ha planted with two varieties of Arabica coffee (Cofeea arabica) which was collected by center pivot spraying water under the plant canopy and the lines. The resulting data were analyzed by descriptive analysis and variance analysis using the Action tool. The results showed that the irrigation depth intercepted
by the coffee canopy was 30.4% greater than the actual depth from the irrigation system confirming the “shadow effect” and therefore the possibility of water resources and power saving.
Palavras-chave: Irrigação. Manejo sustentável. Economia. Cafeicultura.