| dc.description.abstract | A field experiment was carried out in the Agroforestry and Environment Research Farm
under the department of Agroforestry and Environment, Hajee Mohammad Danesh
Science and Technology University, Dinajpur, during November 2014 to March 2015 to
observe the varietal performance of potato under litchi based Agroforestry system along
with sole cropping. The experiment was laid out with two factors Randomized Complete
Block Design (RCBD) following three replications. The treatments were, factor A: two
production systems viz. S1 (litchi + potato) and S2 (Potato sole cropping); factor B: Eight
potato varieties viz. V1 (Diamond), V2 (Cardinal), V3 (Asterix), V4 (Carage), V5 (Lady
Rosette), V6 (Granula), V7 (Raza) and V8 (4.26 R). So, the treatments combinations were
S1V1, S1V2, S1V3, S1V4, S1V5 ,S1V6, S1V7, S1V8, S2V1, S2V2, S2V3, S2V4, S2V5, S2V6,
S2V7and S2V8. The total number of experimental plot was 48 and the size of each plot
was 2mx2m=4m2
. The result of the experiment revealed that there was a significant effect
of plant height, leaf length, leaf breadth, no. of leaf shoot-1
, no. of shoot hill-1
, no. of tuber
hill-1
, weight of tuber hill-1
, yield plot-1
, dry weight, tuber grade hill-1
. In case of main
effects of variety, the highest tuber yield (18.88 tha-1
) was recorded in the variety of Lady
Rosette and the lowest tuber yield (12.29 tha-1
) was recorded in the variety of Diamond.
In case of main effect of production system, the highest tuber yield per hectare (21.94tha1
) was recorded in sole cropping of potato and the lowest tuber yield (8.43tha-1
) was
found in Litchi+potato based Agroforestry system. From the economic analysis, it was
observed that the higher BCR (3.50) was recorded in Litchi + Potato based Agroforestry
system. On the other hand, the lower BCR (2.52) was recorded from the sole cropping of
Potato. In case of interaction effect of the potato variety and production system, it was
found that yield of potato varieties was lower when it was grown under litchi based
Agroforestry systems, where as the yield was higher in sole cropping of potato.
Moreover, among the eight potato varieties, Lady Rosette gave the better yield both in the
litchi based Agroforestry systems as well as in sole cropping whereas the lowest yield
was found in Diamond potato variety when grown in litchi based Agroforestry systems as
well as in sole cropping. However, the suitability of the cultivation of different potato
variety under litchi based Agroforestry systems may be ranked as Lady Rosette> Granula
> Asterix > Carage> Raza > 4.26 R > Cardinal > Diamond.. Finally it may be concluded
that out of the eightpotato varieties, Lady Rosette would be the best variety to be grown
under litchi based Agroforestry systems considering the additional returns as per
investment in terms of money and time. | en_US |
