TY  - JA
AU  - Chen,S.C.
AU  - Da Fonseca,L.B.
TI  - Corn yield model for Ribeirao Preto, Sao Paulo State, Brazil
U1  - 81-652161 
PY  - 1980///
KW  - Brazil
KW  - Maize
KW  - AGROVOC
KW  - Mathematical and statistical methods
KW  - Meteorology and climatology
KW  - Plant production
KW  - Zea mays
N1  - 15 ref.; Summary (En)
N2  - The effects of weather and technology on corn (Zea mays L.) yield in the district of Ribeirao Preto were studied by a correlation analysis. The most important monthly meteorological factor affecting corn yield is total evaporation, which has significant correlation coefficients in five of the six study months. All meteorological factors used for analysis are significant in December, indicating that this is the critical month for corn production. Technology improvements during the period 1957 to 1975 also play a significant role in corn yield and explain more than 45 per cent of yield variation. The best yield-weather-technology (YWT) model for corn
T2  - Agricultural Meteorology
ER  -