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Spectral reflectance for growth and yield assessment of irrigated cotton. Author(s): BRANDAO, Z. N.; SOFIATTI, V.; BEZERRA, J. R. C.; FERREIRA, G. B.; MEDEIROS, J. C. The canopy reflectance using ground-based sensors has the potential to provide information on crop nitrogen content. The objective of this study was to determine relationships between canopy spectral... ... Repository: BDPA Publication year: 2015
Review of two decades of progress in the development of successful drip irrigation for onions. Author(s): SHOCK, C. C.; FEIBERT, E. B. G.; PINTO, J. M. The irrigation needs of long day onion (Allium cepa) have been extensively studied at Ontario, Oregon, over the past 22 years. Drip irrigation has compared favorably with furrow and sprinkler irrigati... ... Repository: BDPA Publication year: 2013
Two-dimensional spatial distribution modeling of sprinkler irrigation. Author(s): BORGES JÚNIOR, J. C. F.; ANDRADE, C. de L. T. de Irrigation can provide significant agronomic and financial returns on agricultural activity. The maximization of the benefits obtained from irrigation depends, among other factors, on the water use ef... ... Repository: BDPA Publication year: 2021
Evaluation of hydrocyclone as pre-filter in irrigation system. Author(s): SOCCOL, O. J.; RODRIGUES, L. N.; BOTREL, T. A.; ULLMANN, M. N. The objective of this work was to evaluate the efficiency of a hydrocyclone to separate sand in irrigation water. To do this, it an experiment was conducted where the hydrocyclone was operated with pr... ... Repository: BDPA Publication year: 2007
Nitrate concentration in the soil solution as affected by irrigation water concentration in fertirrigation. Author(s): ANDRADE NETO, T. M. de; COELHO, E. F.; SANTANA, J. A. do V.; SANTANA JUNIOR, E. B.; ALVES, M. da S. The use of fertirrigation provides larger fertilizer application efficiency, reduction on labor and increases in the benefit-cost relationship to farmers. The inadequate use of fertilizer in fertirrig... ... Repository: BDPA Publication year: 2008
Infrared thermometry to schedule irrigation of common bean. Author(s): LOBO, F. A.; OLIVA, M. A.; RESENDE, M.; LOPES, N. F.; MAESTRI, M. ABSTRACT- The objective of this work was to determine the critical irrigation time for common bean (Phaseolus vulgaris L. cv. Carioca) using infrared thermometry. Five treatments were analyzed. Canopy... ... Repository: BDPA Publication year: 2004
Irrigation water requirement for grapevines using two reference evapotranspitarion methods. Author(s): CONCEIÇÃO, M. A. F. The Northwest of São Paulo State, Brazil, is an important table grape producing area. There is a low rainfall period (April to October) in the region which coincides with the crop production cycle, ma... ... Repository: BDPA Publication year: 2009
Capacitive probe calibration in eutroferric red nitosol cultivated with irrigated forages. Author(s): SANCHES, A. C.; SOUZA, D. P. de; JESUS, F. L. F. de; MAFFEI, R. G.; MENDONÇA, F. C.; PEZZOPANE, J. R. M. Knowledge of soil water content is important for proper irrigation management because it allows estimating the required amount of water to be applied at the correct time. Capacitance sensors are an al... ... Repository: BDPA Publication year: 2017
Five methods to interpret field measurements of energy fluxes over a micro-sprinkler-irrigated mango orchard. Author(s): TEIXEIRA, A. H. de C.; BASTIAANSSEN, W. G. M. Energy balance measurements were carried out in a mango orchard during two growing seasons in the semi-arid region of Brazil. The actual evapotranspiration (ET) was acquired by eddy correlation (EC) a... ... Repository: BDPA Publication year: 2012
Melon productivity under different soil coverings and irrigation system in Petrolina - PE. Author(s): POSSÍDIO, C. E. F.; ALMEIDA, A. D. A. de; SOUSA, J. S. C.; SIMOES, W. L. The objective of this work was to evaluate the influence of irrigation system and soil cover on yield of yellow melon in Petrolina / PE. The experiment was carried out in the period from April 09, 201... ... Repository: BDPA Publication year: 2017

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