International Journal of Horticulture, 2017, Vol.7, No. 31, 288-298
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Ca on K is a well established fact (Wilkinson et al., 1999). Lack of antagonism on 110R could be due to strong
affinity of its root for K (Kalbhor et al., 2017).
N
Soil EC (dSm
-1
)
S
Soil EC (dSm
-1
)
Fe
Soil EC (dSm
-1
)
Mn
Soil EC (dSm
-1
)
Zn
Soil EC (dSm
-1
)
Figure 3 Relationship of soil EC with nutrient absorption index
Calcium absorption decreased marginally with increasing levels of CaCO3 up to 6.75 per cent on dog Ridge and
12.5 per cent on 100R. It increased steadily thereafter on Dog Ridge but marginally on 110R. Ca absorption
increased sharply from 8.0 to 17.4 per cent CaCO3 (Table 3). Own root were more sensitive to CaCO3 levels in
Ca absorption with a threshold level of 8.0 per cent. Rootstocks were more efficient than own root at CaCO3
levels < 10 per cent, while the later were more efficient between 10-20 per cent. Dog Ridge continued to be more
efficient even beyond 20 per cent (Figure 4). Non significant relationship of Ca absorption with CaCO3 on own
root and 110 R indicates that, these roots have more affinity for those cations which are antagonistic to Ca.
