full issue - Association of Biotechnology and Pharmacy

Current Trends in Biotechnology and Pharmacy
Vol. 5 (3) 1346 -1352 July 2011, ISSN 0973-8916 (Print), 2230-7303 (Online)
1350
Table 3. Fresh and weights of roots grown under different nitrogen regimes. N = Replicates, M
= Mean, SE = Standard error
30 days 90 days 150 days
Treatment N M-SE M+SE M-SE M+SE M-SE M+SE
T1 Fresh weight of root 3 58 59.33 120 121.33 267 267.67
Dry weight of root 3 3.73 3.8 8.2 8.27 26.8 27.27
T2 Fresh weight of root 3 83 84.33 340 340.67 490 490.67
Dry weight of root 3 7.44 7.96 16.6 17.4 47.67 48.13
T3 Fresh weight of root 3 149 150.33 468 468.67 600 601.33
Dry weight of root 3 9.24 10.03 18.85 19.09 60 60.67
T4 Fresh weight of root 3 100 100.67 374.33 375 510 510.67
Dry weight of root 3 6.29 6.84 16.79 17.08 55 55.67
T5 Fresh weight of root 3 69 69.67 160 160.67 309.33 310
Dry weight of root 3 4.59 5.01 11.79 12.14 29.49 29.97
T6 Fresh weight of root 3 73 73.67 190 190.67 385 385.67
Dry weight of root 3 5.1 5.23 14.85 15.09 44 44.67
T1 = control; T2 = 100% NPK; T3 = 50% NPK + 10 tonnes of farm yard manure;
T4 = 50% NPK + 5 tonnes of vermicompost; T5 = 20 tonnes of farm yard manure;
T6 = 10 tonnes of vermicompost.
100 kg ha -1 P2O5 and 20 tonnes FYM ha -1
increased the fresh weight of rhizomes in Acorus
calamus (7). Sheu et al. (12) also observed higher
yield (23 tonnes ha -1 ) in Dioscorea doryophora
with organic and inorganic fertilizer
amendments. In treatment number 3, maximum
fresh weights were recorded (Table 3 and Fig.
4.). In Aswagandha (Withania somnifera), dry
weight of roots (1.297 g plant -1 ) were obtained
with 15 kg N ha -1 (Maryada et al., 2001). In
Catharanthus roseus, 100 kg N, 40 kg P 2
O 5
and
50 kg K 2
O) ha -1 gave maximum root yields
(Hegde, 1988). Highest root yield of aswagandha
was obtained with the application of 20 kg N
and 40 kg P 2
O 5
ha -1 (11). In aswagandha,
application of 40 kg N ha -1 and 60 kg P 2
O 5
ha -1
and 20 kg K 2
O ha -1 gave the highest dry root
yields of 770.37 kg ha -1 (13).
Root characters like number of roots per
plant and length of roots increased in
Chlorophytum borivallianum, along with the
number of tubers, fresh and dry weights of tuber
yield and steroidal content with the application
of vermicompost of 5 tonnes ha -1 . The steroidal
content was the highest with vermicompost
application (2). Maheshwari et al. (1988) also
observed increase in the root yield in Rauwolfia
serpentaina with the application of N (30 kg N
ha -1 ). Application of NPK at 30:30:0 kg ha -1
recorded the highest dry root yields of
Aswagandha but further increasing the levels of
Effect of NPK and farm yard manure on the accumulation of forskolin