Abstract:
Grain sorghum is the main staple food for human and animal consumption in the
Sudan .it is mainly cultivated in the rain fed mechanized farming system in Gadaref
area and southern Blue Nile areas. For food security planning purposes it is
essential to predict early in the season (at planting time) crop yield and to develop
methods to improve and sustain crop productivity. To achieve these objectives this
study is directed to employ rainbow, ETo and crop budget software in order to
estimate crop yield and optimum sowing dates of sorghum crop under different
.scenarios of rainfall levels and distribution
Although the records of available yield data is not fully complete and vary in
accuracy the applied models are found to be capable to fairly predicting crop yield
at various levels of soil moisture . it is found that yield improvements can be
achieved by adopting early crop sowing in the first decade of July after the onset
.the early 100mm rainfall and disappearance of cracles
As a measure against the spatial and temporal distribution of rainfall the study
.estimated the designed capacity for farm pond
.The needed policy and future research are explored and explained in the thesis
