The research aimed to estimate the total cost, medium and marginal
cost, volumes and economic optimization production of rain feed lentil in the
first zone of Aleppo governorate using econometric models. Linear regression
analysis of a single equa
tion was applied to explain the relationship between
amount of production as an independent variable and the value of production
costs as the dependent variable.
A study was carried out in the 2nd agro-ecological zone at the General Commission
for Scientific Agricultural Research/Sirbaya Research Station/Aleppo during the growing
season 2011-2012. The study aimed at evaluating the response of different vari
eties of
lentil to supplemental irrigation. The experiment adopted a split plot design with three
replicates. Two water treatments, supplemental irrigation (R) and rain feed (Ro) were
applied to three varieties of lentil: IDLEB1 (D1), IDLEB1 (D2), and IDLEB1 (D3). The
results showed that R was more significant than Ro at a confidence level 5% for grain, hay
yield, and 100-grain weight. The differences were significant between the varieties that
applied Ro; the most significant of which was D3 for grain and hay yield, and D2 for 100-
grain weight. As for R, the differences were significant for grain yield (the most significant
was D3) and 100-grain weight (the most significant was D2), while there was no
significant difference for hay yield. There was no interaction between water treatment and
the variety in terms of grain yield and 100-grain weight, while it was observed for hay
yield.
Methodsof soils cultivating and organic fertilizer are considered as
the most important operations that change the soil; and prepare it
to receive multiplications units of the crops that we want to plant
and to provide the suitable conditions for feeding the plant later,
and to increase the production and to improve the quality along
with keeping the various properties of the agriculture soil.
