SciELO - Scientific Electronic Library Online

 
vol.85 número205A geometrical robust design using the Taguchi method: application to a fatigue analysis of a right angle bracketEffects of cutting parameters on surface roughness and hardness in milling of AISI 304 steel índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Não possue artigos similaresSimilares em SciELO
  • Em processo de indexaçãoSimilares em Google

Compartilhar


DYNA

versão impressa ISSN 0012-7353

Resumo

GONZALEZ-BETANCOURT, Mauricio  e  MAYORGA-RUIZ, Zaira Liceth. Normalized difference vegetation index for rice management in El Espinal, Colombia. Dyna rev.fac.nac.minas [online]. 2018, vol.85, n.205, pp.47-56. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v85n205.69516.

Aerial images and the Normalized Difference Vegetation Index (NDVI) of the stage after panicle initiation were evaluated as tools that help large-scale rice monitoring and decision-making that favors crop profitability. NDVI was used to identify problems in the development and growth of FEDEARROZ-2000. FEDEARROZ-2000 is a variety of rice, which is resistant to the “hoja blanca” virus and direct “sogata” damage that affect fields in tropical America. The temporal dynamics of the NDVI for FEDEARROZ-2000 were estimated. An NDVI lower than 0.8 in the Stage of Rice Panicle Development (SRPD) was related to areas with levelling problems, differences in the vegetative stage, water stress, and spacing between plants. The NDVI for the SRPD had a significant positive correlation with yield, 1,000 grain weight and the number of panicles (Pearson's R≥0.86; probability value P ≤0.04). NDVI mapping at milky stage helped to identify production environments and to schedule the harvest areas.

Palavras-chave : NDVI; rice; unmanned aerial vehicle.

        · resumo em Espanhol     · texto em Inglês     · Inglês ( pdf )