The answer to Your query depends greatly on the way we look the issue, if you mean the superiority of this method to the conventional tillage (CT) , the general answer would be negative. Normally, the CT, accompanies by making the field more vulnerable to water and wind which is mostly tied by a number of mechanical operations that do always fairly costly.

In the rotational systems, it has been found that greater gross return would be obtained in a conventional tillage in comparison to no-till farming.

Instead, zero tillage farming which itself means planting on the plow free soil, reduces machinery costs, labor force and diminishes the soil erosion. It also improves the soil structure and offers water savings in the early stages of our cultivation because with no-till (NT) system the land attitudes to hold more waters. At any case, the herbicides play an important role in no-till systems. The yield and profit obtained through conventional system is found to be much more in a short term planning; however, the NT system has potential yield benefits with a duration of more than 4 years than to CT. SO, if we put aside the net return goal or short-term yield potential, we might consider no-till system in order to obtain potential long term benefits.

Dear Peiman Zandi

I am also working with aerobic rice since from 6 years. What i have observed is where intercultivation was not given there the crop failed severely from weeds as well aass due to Soil compaction. From this i am asking whether is it fesiable.

Dear Sunil

From my field level experience I feel Zero tillage is more suitable for wheat ... etc cultivation. In case of aerobic rice application of System of Rice Intensification methodology is more successful. In case of aerobic rice application of zero tillage leads to stunted growth and number of tillers, panicles, panicle length ...etc are also reduced which is ultimately reflected in case of productivity. Rice root growth is badly effected and crop weed competition becomes severe.

I feel SRI is not also a permanent  long term solution for sustainable paddy cultivation.In this system for first few years plants produces more absorbing huge amount of nutrients from the soil and ultimately it becomes difficult to maintain nutrient recycling system. As a result soil fertility status drastically reduces (if SRI system is practiced in the same field for  consecutive  4-5 ... years), ultimately which is reflected in case of productivity.