Abstract:
Afield experiment was conducted for two consecutive years in the sandy
loam soil of the Agronomic Research Station, Chalakudy to study the effect of
different irrigation schedules (0.3, 0.6 and 09 IW/CPE ratios) on the growth and
yield of cassava under pure and mixed stands (cassava (M 4) alone and cassava
intercropped with groundnut (TMV 2), cowpea (V 16), greengram (ML 26), and
blackgram (T 9). It was revealed that under shallow water table conditions
cassava requires irrigation only at IW/CPE ratio of 0.3 (approximately once in 37
days in the dry period) both under pure and mixed stands. It was also observed
that cultivation of intercrops viz., greengram, cowpea, blackgram and groundnut
gave additional income from the same piece of land without adversely affecting
the yield of cassava.
