TY  - JA
AU  - Shah,P.
AU  - Haider,S.
AU  - Taj,F.H.
TI  - Temperature, heat indices and photoperiod based mathematical model for emergence of wheat
SN  - 1016-4383
U1  - 97-146243 
PY  - 1995///
KW  - Asia
KW  - Crop management
KW  - AGROVOC
KW  - Developmental stages
KW  - Environmental factors
KW  - Gramineae
KW  - Light regimes
KW  - Lighting
KW  - Mathematical and statistical methods
KW  - Models
KW  - Plant developmental stages
KW  - Plant physiology Growth and development
KW  - Soil chemicophysical properties
KW  - South Asia
KW  - Temperature
KW  - Timing
KW  - Triticum
N1  - 5 ills., 3 tables, 10 ref. Summary (En)
N2  - To develop a weather-based model for emergence of wheat in Peshawar, wheat was planted on five dates from 25th October to 25th December. Dates on which wheat seedlings emerged were recorded. Days to seedling emergence and rate of seedling emergence were calculated. From the weather data and photoperiods for the wheat growing season, various indices were calculated for wheat planted on the five dates. Based on coefficient of variation, product of average temperature and photoperiod was found to be the most appropriate index for predicting emergence of wheat as coefficient of determination for cumulative values of this index for the emergence periods of the five dates of sowing was the lowest
T2  - Sarhad Journal of Agriculture (Pakistan). (Aug 1995). v. 11(4) p. 429-439
ER  -