i think i did confuse u all the more..
ok.. really didnt mean to do that.
soil PH is a in depth and technical topic, lets keep it for some other day.
i specified that dont get into depth, just find whats the difference b/w red and black soil.
see..these are the very basics.. black soil has more water holding capacity, is sticky, forms lumps, where as red is totally opposite. this affects the root development, helpful growth of cultures etc. which in turn results in better crop quality.
ok lets not get into details.
next is about murum, 100% red soil is goooood.. but it isint economical when you have to buy it.
so to make up volume in the plantation media, one can add murum.
red soil has less water holding capacity, so you'll have to water your plants regularly.
so a mixture is the best. there are a lot other ingredients, but we are only discussing soil and murum.
everything u'll see is inter-related and one needs to balance it.
i am very particular about how much i want to invest, what is the best i can do with my limited resources, and the returns i get against my investment.