I. ABSTRACT
Two field experiments were conducted at EL-Gemmeiza
Agricultural Research Station farm, El-Gharbia Governorate during
2016/17 and 2017/18 winter seasons to study the effect of three sowing
dates of faba bean and six intercropping systems of sugar beet (Beta
vulgares L.) cv. Halawa Kws with faba bean (Vicia faba L.) cv. Giza
843. The field experiment was designed in a split plot design with three
replicates, where the three sowing dates were allocated in the main plots
and cropping systems i.e. IS= Inter cropping system In all intercropping
systems (IS) sugar beet was35000 plants/fad (sugar beet sown in the two
sides of bed 120cm width with 1 plant/hill and 20cm hill space),
IS1=70000 faba bean plant/fad (sown one row on the top of sugar beet
ridges with two plants/hill and 10cm hill space), IS2=70000 faba bean
plant/fad (sown two rows on the top of sugar beet ridges with one
plant/hill and 10cm hill space), IS3=35000 faba bean plant/fad (sown one
row on the top of sugar beet ridges with two plants/hill and 20 cm hill
space), IS4=35000 faba bean plant/fad (sown two rows on the top of
sugar beet ridges with one plant/hill and 20cm hill space), IS5=17500
faba bean plant/fad (sown one row on the top of sugar beet ridges with
two plants/hill and 40 cm hill space) and IS6 =17500 faba bean plant/fad
(sown two rows on the top of sugar beet ridges with one plant/hill and
40cm hill space) were randomly distributed in the sub-plots. Sugar beet
considered as main crop (35000 plants/fad) and faba bean was treated as
secondary crop. The following traits of sugar beet were estimated i.ei,
number of leaves/plant, root length, root diameter, root weight, top < br />weight/plant, biological yield/plant, root yield/fad, top weight/fad. and
biological yield/fad. results indicated that, the effect of sowing dates
were highly for all studied traits, except for top weight/plant where it was
not significant. The late sowing date (15th Nov.) had the highest values
for all studied traits, followed by the mid-sowing date (1st Nov.). The
Egypt. J. of Appl. Sci., 36 (3) 2021 84-106
intercropping system IS6 where faba bean sown two rows on the top of
sugar beet ridges with one plant/hill and 40 cm hill space (17500
plants/fad.) had highest values for all studied traits. sugar beet traits were
significantly affected by the interactions of sowing dates and
intercropping systems, except for top weight/plant and the content of
Alpha amino. However, the interactions between the late sowing date and
the intercropping system IS6 had the highest values for all studied traits.