November 9, 2010
I planted six lemon seedlings from the IARI last August. The one that grew the slowest started flowering first. However, gradually it lost all the leaves and started drying up. Eventually the buds also dried up. Now even the new shoots dry up soon after emergence. What could be wrong? Out of the other five, the one that grew the fastest now has lots of buds and seems to be doing well. None of the others has any buds till now. What causes so much difference in the growth and fruiting cycle of these trees. I also have an old citrus tree in the house. This is some kind of a cross between lemon and orange! Whatever be its genes, it is again blooming profusely like it does each year. Touch wood because we all love the flavour of its fruit in nimbu paani! I would be grateful for any help regarding the following issues:
1. Like for vegetables, do I have to reduce the ratio of 'N' in the fertilizer used after the flower-buds start appearing. I ask this because along with the buds the plants also produce a lot of new leaves which obviously would increase the requirement of nitrogen. I am simply confused.
2. On some plants there are some kind of aphids. I washed them off with a teepol solution but they seem to be reappearing. Do I have to do something else?
3. What could be the reason for one of the plants gradually drying up even though new shoots seem to be appearing?
4. I have used farmyard manure, NPK, zinc sulphate and magnesium sulphate. Do I need to add some other nutrients?
Thanks in advance for any advice particularly from people who have had similar problems!!
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