NDLI: Efeito da fertirrigação com fontes de nitrogênio em um sistema de irrigação localizada por gotejamento

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Efeito da fertirrigação com fontes de nitrogênio em um sistema de irrigação localizada por gotejamento

Content Provider	Semantic Scholar
Author	Silva, Iata Oliver Fernandes Santos, L. N. S. Cunha, Fernando Nobre Moraes, G. S. Cunha, E. S. Alves, D. K. M.
Copyright Year	2017
Abstract	The objective of this study was to evaluate the influence of fertirrigation with nitrogen sources in a drip irrigation system. The experiment was realized in a greenhouse located in the experimental area of the IFGoiano Rio Verde Campus. The greenhouse consists of roof of film plastic transparent polyethylene, of 150 microns and closed sides, with screen with 30% interception. The experimental design used in randomized block, analyzed in a factorial scheme 5 x 6, with three replications. The treatments consisted of five sources of N (potassium nitrate, ammonium sulfate, calcium nitrate, ammonium nitrate and urea) and six operating times (100, 200, 300, 400, 500 and 600 h). Used a drip tube model with nominal flow of 2 L h, nominal diameter 16 mm, internal diameter 13 mm, operating pressure 100 to 350 kpa and spacing between emitters of 0.7 m. The procedure to realization of flow reading consisted in pressurizing the system, stabilization of the pressure at 150 kPa (+/5 kPa) at the beginning of the line, positioning the collectors under the respective drippers with three seconds of lag and removing the collectors with the same sequence and lag of time after 5 min of collection. After of tabulated the data, were determined the flow and the relative flow. The relative flow is higher than 90% only when is used in fertirrigation the urea.
File Format	PDF HTM / HTML
DOI	10.7127/iv-inovagri-meeting-2017-res1070362
Alternate Webpage(s)	http://www.inovagri.org/anais/TC1070362.pdf
Alternate Webpage(s)	https://doi.org/10.7127/iv-inovagri-meeting-2017-res1070362
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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