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The objectives of this study are (1) to determine the availability of food, income and food purchasing power of the residents of the City of Mataram and (2) To estimate the availability and area of minimum agricultural land for food in the City of Mataram. The research was conducted by survey method, and primary data collection was carried out by structured interviews using a list of questions, while secondary data collection was carried out by recording or copying from secondary sources at the relevant agencies. Data analysis was performed using functional equations with income constraints aided by SPSS software. The results showed that there was enough available food in the city of Mataram sourced from local production and sourced from food supply outside the city of Mataram, respectively. Amounted to 44% and 56% of the total rice food needs of 45,375 tons/year in 2013. Rice food expenditure is relatively small, which is between around 1.67% of the total income per capita of the population of Mataram City of Rp 5,880,000 / capita/year, so that in terms of access to rice food is relatively easy and inexpensive. The land for food continues to decrease due to land conversion from agriculture to non-agriculture use with a range of 4% per year. Without controlling the land conversion, it is projected that Mataram city is going to be rare in land for food within 25 years. To support regional food security in the city of Mataram city needs at least 453 to 569 hectares to produce the food sustainably, assuming a constant population.

No-till farming is farming technics that could better conserve the fertility of the farmland than till farming. Technically, it is greatly linked with the global sustainable agriculture framework. However, it needs to be economically sound for adoption by farmers. Scientific analysis of this aspect is rarely reported in the literature, accessible to the authors. This paper attempts to fill the gap by taking as a case study: the efficiency of tobacco Virginia farms in East Lombok (Indonesia), involving 15 no-till farming farmers and 15 till farming farmers as the sample. This sample was randomly selected from the population of Virginia farmers in purposively selected two villages in the research areas. Data collection was carried out during 2018 planting session using an individual structural interview technique. Farm efficiency was measured as Return to Cost (R/C) ratio. The significance of the efficiency difference between no-till and till farming was analyzed using a t-test. The analysis found that the R/C ratio of Virginia tobacco farms using no-till farming system (mean = 2.21) was significantly lower at 95% degree of confidence than the R/C ratio of virginal tobacco farms using till farming system (mean=3.47). In spite of this significant difference, the value of the R/C ratio was larger than one, indicating each of the systems was financially feasible. This explained the adoption of no-till farming by some of the Virginia tobacco farmers in the study areas. However, the wider adoption of the no-till farming system needed some improvements to reduce farm cost and increase revenue.