Sentences with phrase «grain harvest since»

One key to the threefold expansion in the world grain harvest since 1950 was the rapid adoption in some developing countries of high - yielding wheats and rices (originally developed in Japan) and hybrid corn (from the United States).

Indeed, the tripling in the world grain harvest since 1950 is due in part to impressive increases in multiple cropping in Asia.

Not exact matches

Producing enough grain to make it to the next harvest has tested farmers ever since agriculture began, but the challenge is deepening as new trends — falling water tables, plateauing grain yields, and rising temperatures — make it difficult to expand production fast enough.

Since the mid-twentieth century, the world grain harvest has nearly quadrupled, with most of this growth coming from the tripling of the grain yield per acre.

One of the drawbacks Martinez - and many professionals - questions is corn biodiesel, since the amount of energy required to plant, fertilize, harvest and process the grains until their final fuel form is almost the same or less than the energy obtained in biodiesel.

Since it takes 1,000 tons of water to produce one ton of grain, the shortfall in the Hai basin of nearly 40 billion tons of water per year (1 ton equals 1 cubic meter) means that when the aquifer is depleted, the grain harvest will drop by 40 million tons — enough to feed 120 million Chinese.

Since expanding irrigation helped triple the world grain harvest from 1950 to 2000, it comes as no surprise that water losses can shrink harvests.

Since cork is harvested from the bark of its host tree, the patterns of the grain are very lively and arguably provide some of the most interesting grain patterns in wood.