Relationship between yield, evapotranspiration and norm of irrigation by grain corn, midle late maturity
2001
Matev, A. (Institut po Melioratsii i Mekhanizatsiya, Sofia (Bulgaria))
The experiment has been carry out sins 1998-2000 period in the vicinity of Sofia with midle late maturity grain corn hybrid KN-509. The purpose of the experiment was establishment of the relationship "Yield-Norm of irrigation" and "Yield- Evapo-transpiration" by FAO's formula; Davidov's formula and Jensen's formula. The results show that greatest influence about the yield gives the quantity of evapotranspiration during first phase (Fig. 2-6). Formula (3) may use successfully about establishment of the relationship "Additional yield-Norm off irrigation" (Fig.1).
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