Hamad Ahmed Kisana wrote:i sowed 10 seeds of amranthus on 18-06-13 for experiment...6 in situ and 4 in pot. luckily they all sprouted. recent situation is this that 3 in situ died due to rains and 1 died in pot ..others are growing well..
plants in ground..
plants in ground are lanky and unhealthy but pot plants are healthy.
I don't like your soil conditions. Its clayee.....should add something to make it drain better. It has a tough crust..seems to be like that since long. Plants need to breathe more.....fungus on top crust, again sign of frequent watering..poor drainage, poor media and lack of hoeing. I agree that in summers we need not to hoe very often but considering your soil conditions i recommend to do that atleast with a interval of a week.
Don't mind if i am being tough(apno kay saath hi tough hota hai insaaan ).....and lastly remove weeds. Beds free of weeds mean less disease and more nutrients available to your plants.
This is the very reason your datura died. Clay and fungus.