Tk. Mondal et Ss. Mondal, INTEGRATED NUTRIENT MANAGEMENT FOR RICE (ORYZA SATIVA)-BASED CROPPINGSYSTEM, Indian Journal of Agricultural Sciences, 66(12), 1996, pp. 694-698
A field experiment was conducted during July 1991-October 1993 to stud
y the productivity, fertility build-out, net production value and nutr
ient uptake in 2 rice (Oryza saliva L.)-bascd cropping systems. The pr
oductivity of rice was maximum in rice (rainy season)-fodder oat (Aven
a saliva L.)-rice (winter season)-green-manure sweet clover or senji [
Melilotus alba (L.) All.; syn M. parviflora Desf.]-rice (winter season
)-fodder sorghum [Sorghum bicolor (L.) Moench], where rice was green-m
anured in situ with cowpea and senji during rainy and winter seasons w
ith application farmyard manure @ 10 tonnes/ha along with 50% N60P40K4
0 and N80P60K60 to both rice respectively. The maximum net production
was recorded in rice (rainy season)sweet clover (fodder)-rice (winter
season)-cowpea (fodder) sequence, where rice was fertilized with farmy
ard manure @ 10 tonnes/ha along with N30P20K20 and K40P30K30 to rainy
and winter-season rice respectively. The maximum total uptake of nutri
ents (N, P, K and S) per annum was recorded in rice-oat (fodder)-rice
cowpea (green-manure) sequence, where rice during both the seasons was
fertilized with N30P20K20 and N40P30K30 along with farmyard manure @
10 tonnes/ha.