These two papers may be helpful for you:

Maltchik, L., C. Stenert and D. P. Batzer (2017). "Can rice field management practices contribute to the conservation of species from natural wetlands? Lessons from Brazil." Basic and Applied Ecology 18: 50-56.

Tellez-Rio, A., A. Vallejo, S. Garcia-Marco, D. Martin-Lammerding, J. L. Tenorio, R. M. Rees and G. Guardia (2017). "Conservation Agriculture practices reduce the global warming potential of rainfed low N input semi-arid agriculture." European Journal of Agronomy 84: 95-104.

There are several parts to this question: (i) what is agricultural sustainability and how to measure it; (ii) at what spatial scale (farm level, regional or national) should sustainability be measured; (iii) how to combine the different dimensions of sustainality into one statistic, (iv) how to apply such an evaluation tool in practice.

Indicators used for agricultural sustainability should be location and time specific. They should be constructed within the context of the comtemporary and socio-economic and ecological situation.  The assessment then involves identifying meaningful sustainability attributes and finding weights that would allow combining them into an aggregate sustainability measure. See Sydorovych and Wossink (2008).

A pragmatic approach towards quantifying sustainability then would be to start from the three dimensions of sustainability (economic, social, and ecological) and work towards an integrated measure. This can be applied at the farm or higher spatial level. See Pacini et al (2003).

Conference Paper An Application of Conjoint Analysis in Agricultural Sustaina...

Data Pacini et al. Agric, Ecosys.Envir 2003

Dear Lambrianidis,

Truely speaking you raised very relevant but the most difficult question to answer I ever encountered in researchgate so far. Fortunately Professor Ada Wossink provided the best answer  to this question. Sustainable agriculture is emerging science due to the fact that the modern agriculture when started and until recently didn't recognize even didn't know sustainability. Because of this fact a lot of damage to occurred the environment, biodiversity and traditional sustainable agricultural production practice. However, recently people around the world began to be concerned on the sustainability of our earth system and started to search means and technologies that will help protect our environment, biodiversity and that makes agricultural production sustainable. Thus, as far as I am concerned I can't tell you the best combination crop production practices which sustainable. However, practices that combine conservation agriculture, inter cropping of cereals with legumes, combined application of organic and inorganic fertilizer, soil and water conservation technologies and crop rotation ares examples of sustainable crop production practices.

I agree Dr.Wassie , question is very difficult to answer because  best agricultural management practices vary from region to region . For me average production +conservation = sustainability . 

Yes, agri-management practices vary from region to region. I agree with Dr.Wassie and Dr. J.C. Tewari sir.

Its not say very easily that one method or 2 method is helpful because Indicators used for agricultural sustainability should be location and time specific. So I agree with Dr.Wassie and Dr. J.C. Tewari.

First of all, select the crops and crop rotations on the following ground.

Suitability of the crops with respect to the soil and climatic factors, marketing scope, farm resource availability such as irrigation, labour, machinery etc and even socio-economic parameters has to be earmarked and shortlisted. The choice of crops has to be made. Then look at sustainability issue that it is not going to damage the balance of natural factors.  

For each crop, various alternative methods of production and practices should be examined in the similar fashion which would lead you to infer on this issue.