TY  - JOUR
AV  - restricted
UR  - http://dx.doi.org/10.1007/BF00009138 
IS  - 1
PB  - Kluwer
TI  - Role of Scutellonema clathricaudatum in etiology of groundnut growth variability in Niger
A1  - Sharma, S B
A1  - Waliyar, F
A1  - Subrahmanyam, P
A1  - Ndunguru, B J
SN  - 0032-079X
VL  - 143
N2  - Variation in crop growth is an important limiting factor for groundnut production in Niger. Populations
of Aphelenchoides sp., Ditylenchus sp., Helicotylenchus sp., Hoplolaimus pararobustus, Macroposthonia
curvata, Paralongidorus bullatus, ScuteUonema clathricaudatum, Telotylenchus indicus and
Xiphinema parasetariae have been associated with groundnut crop growth variability. S. clathricaudatum,
X. parasetariae and T. indicus were widespread and S. clathricaudatum was most abundant
nematode. Population densities of S. clathricaudatum was always higher in the roots of poorly growing,
chlorotic and stunted plants than in the roots of apparently healthy plants. A preplant population
density of 1.3 S. clathricaudatum cm -3 soil caused (p = 0.05) reduction in plant growth of groundnut
cv. 55-437. S. clathricaudatum was mainly confined to 0-15 cm soil depth at the time of planting in June
and was not found below 45 cm depth at any time during the crop growth period. Soil application of
carbofuran (10kg a.i ha -1) reduced the nematode population densities and resulted in vigorous and
uniform crop growth. Higher AI and H-ion concentrations (0.50 meq 100 g-~ soil) also was associated
with poorly growing chlorotic seedlings. Symptoms of nematode-caused variable growth were evident 3
to 4 weeks after seedling emergence.
SP  - 133
Y1  - 1992///
EP  - 139
ID  - icrisat4618
KW  - aluminium toxicity
KW  -  Arach& hypogaea
KW  -  crop growth variability
KW  -  groundnut
KW  -  peanut
KW  - 
pesticide
KW  -  plant-parasitic nematodes
KW  -  Niger
KW  -  Sahel
KW  -  Scutellonema clathricaudatum
KW  -  soil pH
JF  - Plant and Soil
ER  -