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@ARTICLE{Karbout:902938,
author = {Karbout, Nissaf and Mlih, Rawan and Latifa, Dhaouidi and
Bol, Roland and Moussa, Mohamed and Brahim, Nadhem and
Bousnina, Habib},
title = {{F}arm manure and bentonite clay amendments enhance the
date palm morphology and yield},
journal = {Arabian journal of geosciences},
volume = {14},
number = {9},
issn = {1866-7511},
address = {Heidelberg},
publisher = {Springer},
reportid = {FZJ-2021-04691},
pages = {818},
year = {2021},
abstract = {Date palm production contributes significantly to
socio-economic development and food security in the dryland
areas of Southern Tunisia. Soil degradation and nutrient
depletion have dramatically increased in recent years. This
is leading to a decline in date palm yields in these
oases-based production systems. Locally derived bentonite
clay has been identified as a new soil amendment to improve
date morphological characteristics and date production. In
this study, a 3-year field experimental study was carried
out on 3-year-old Deglet Nour date palms growing in sandy
soil of a Tunisian oasis (Fatnassa, Southern Tunisia). The
study’s aim was to compare the effect of two amendment
types: (i) sand (S) mixed with farm manure (M) and bentonite
clay (B) (=BSM) and (ii) sand mixed with farm manure (SM) on
the soil characteristics and morphological features of date
palm. The results indicated that soil macro- and
micronutrient contents were enhanced under BSM. Soil water
retention in BSM also increased to 290 ± 0.3 mm m−1
compared to 70 ± 0.2 and 50 ± 0.5 mm m−1 for an
untreated (no amendment) and SM treatment, respectively. The
amelioration of morphological characteristics was observed
for the canopy diameter reaching 226 ± 0.6 cm in BSM
treatment compared to 172 ± 0.6 cm in untreated palm trees.
The height of the palms increased by 69 ± 0.8 cm from 29 ±
0.1cm in the control treatment, and leaf number increased
from 40 leaves palm−1 in BS to 60 leaves palm−1 in BSM
treatment. The leaf mineral content was significantly been
improved in the third year, and the leaf NPK contents were
220 ± 0.6 mg kg−1, 17 ± 0.1 mg kg−1, and 200 ± 0.04
mg kg−1, respectively, in BSM treatments. The effect of
the farm manure and bentonite clay was noticeable for the
yield production, and the SM and BSM treatments offered
yields of 70 ± 0.9 kg palm−1 and 80 ± 0.5 kg palm−1,
respectively. It could partly ameliorate the alternate year
bearing phenomenon of the Deglet Nour date variety. We
conclude that the joint application of farm manure and
bentonite clay does represent a viable option to further
improve the production and resilience of date palms in
dryland areas.},
cin = {IBG-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {2173 - Agro-biogeosystems: controls, feedbacks and impact
(POF4-217)},
pid = {G:(DE-HGF)POF4-2173},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000691857600002},
doi = {10.1007/s12517-021-07160-w},
url = {https://juser.fz-juelich.de/record/902938},
}