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Utilization of nitrogen (15N) from urea and green manures by rice as affected by nitrogen fertilizer rate. Author(s): CONTRERAS ESPINAL, F. S.; SILVA, E. C. da; MURAOKA, T.; FRANZINI, V. I.; TRIVELIN, P. C. O.; TEIXEIRA, M. B.; SAKADEVAN, K. The use of green manures (GMs) in combination with nitrogen (N) fertilizer application is a promising practice to improve N fertilizer management in agricultural production systems. The main objective... ... Repository: BDPA Publication year: 2016
Morphogenetic and structural traits of Ipyporã grass subjected to nitrogen fertilization rates under intermittent grazing. Author(s): CAMARGO, F. C.; DIFANTE, G. dos S.; MONTAGNER, D. B.; EUCLIDES, V. P. B.; TAIRA, C. de A. Q.; GURGEL, A. L. C.; SOUZA, D. L. de ABSTRACT- This study examined the effects of annual nitrogen (N) rates of 100 and 200 kg ha-¹ on the morphogenetic and structural traits of Ipyporã grass (Brachiaria brizantha × Brachiaria ruziziensis... ... Repository: BDPA Publication year: 2022
Nitrate reductase activity and spad readings in leaf tissues of guinea grass submitted to nitrogen and potassium rates. Author(s): LAVRES JUNIOR, J.; SANTOS JUNIOR, J. de D. G. dos; MONTEIRO, F. A. Nitrogen and K deficiency are among the most yield limiting factors in Brazilian pastures. The lack of these nutrients can hamper the chlorophyll biosynthesis and N content in plant tissues. A greenho... ... Repository: BDPA Publication year: 2010
Yield performance of upland rice cultivars at different rates and times of nitrogen Application. Author(s): BARRETO, J. H. B.; SOARES, I.; PEREIRA, J. A.; BEZERRA, A. M. E.; DEUS, J. A. L. de Nitrogen is the most important nutrient for rice (Oryza sativa L) yields. This study aimed to evaluate the response of upland rice cultivars to N rate and application times in a randomized block desig... ... Repository: BDPA Publication year: 2012
Yield and nitrogen uptake of sunflower as influenced by nitrogen sources and rates. Author(s): MORAES, L. A. C.; MOREIRA, A. A greenhouse experiment was conducted to evaluate the shoot dry weight the shoot dry weight (SDW) and achene yield, and nitrogen (N) concentration in leaves and achene as influenced by N sources. The... ... Repository: BDPA Publication year: 2015
Soybean growth affected by seeding rate and mineral nitrogen. Author(s): WERNER, F.; BALBINOT JUNIOR, A. A.; FERREIRA, A. S.; SILVA, M. A. de A. e; DEBIASI, H.; FRANCHINI, J. C. ABSTRACT: This study aimed to evaluate the effect of seeding rates and nitrogen (N) fertilization on plant growth in soybean cultivar with indeterminate growth habit. Two experiments were conducted in... ... Repository: BDPA Publication year: 2016
Severity of wheat blast on heads at different rates of nitrogen fertilization in Paraná State, Brazil. Author(s): CUSTODIO, A.; SILVA, S. R.; FOLONI, J. S. S.; BETIOLI-JUNIOR, E.; OLIVEIRA-JUNIOR, A.; BASSOI, M. C. Repository: BDPA Publication year: 2018
Optical crop sensor for variable-rate nitrogen fertilization in corn: II - Indices of fertilizer efficiency and corn yield. Author(s): BRAGAGNOLO, J.; AMADO, T. J. C.; NICOLOSO, R. da S.; SANTI, A. L.; FIORIN, J. E.; TABALDI, F. Repository: BDPA Publication year: 2013
Optical crop sensor for variable-rate nitrogen fertilization in corn: I - Plant nutrition and dry matter production. Author(s): BRAGAGNOLO, J.; AMADO, T. J. C.; NICOLOSO, R. da S.; JASPER, J.; KUNZ, J.; TEIXEIRA, T. de G. Repository: BDPA Publication year: 2013
Simulated yield and return of a maize crop fertilized with different sources and rates of nitrogen. Author(s): ANDRADE, C. de L. T. de; AMARAL, T. A.; DUARTE, J. de O.; GARCIA, J. C.; SILVA, D. de F.; MARTINS, P. C. The goal of this study was to evaluate yield and net return of a maize crop fertilized with different rates of conventional mineral fertilizer and cattle manure. The CSM-CERES-Maize model was used to... ... Repository: BDPA Publication year: 2012

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