Arguments...

1) The improvement of technology has only helped to intensify food crops but not the distribution of it to places which really needs it.

For example, although food production has increased, government may choose to sell the food produce for economic purposes instead of saving it for its people. For example, in Uganda, grains were largely exported instead of consumed by its own people who needs to feed on them.

2) The technology is not without negative impacts and such negative impacts would have to be negated or minimized or reduced to ensure the food intensification process is sustainable.

Many debates and controversies have arisen due to fact that the food produced which are enhanced through technology has doubtful health effects. And the technology that is used to produce food crops may make the crops resistant to certain chemicals and stronger chemicals have to be produced each time to allow new crops to grow. Therefore, it is argued that such food crops may not have sustainable growth. Another hot controversy is that the food crops grown are consuming too much energy which contributes to the growing demand for energy sources. It is argued that energy demand and food crops demand are co-related positively.

3) Although there is increase in food production, the population of the earth is growing exponentially and at a faster rate than the food production rate. 

At the rate that the earth's population is growing, many geographers are speculating that eventually, the number of people on earth will outstrip the earth's supply of food and natural sources and the best way to prevent this from happening in the first place is to control the population growth rates.