Maize is one of the world's most widely cultivated crops, valuable not only for human and animal consumption, but also for ethanol production [ 26].
If their fields are irrigated at all, they are flooded wastefully, with water flowing down furrows on either side of the crop, taking valuable nitrogen with it.
Biofuel crops may also find themselves competing with food crops for valuable land.
Furthermore, a metabolomic approach might be useful in the breeding of crops, since valuable plant traits such as taste and yield are closely related to metabolic conditions.
Other important crops include cotton (the second most valuable crop, after wheat), rice, tobacco, temperate and tropical fruits, corn (maize), sorghum, oilseeds, and a host of other items reflecting the expansive latitudinal range of farming operations.
Therefore, further research using P-NMR is needed globally on a wider range of crops to fully understand the dynamics in soil of this valuable crop nutrient.
He mentions almonds, the state's second most valuable crop.
Apples are the fourth most valuable crop in the state, generating $138 million in 1999.
Grain is the leading agricultural product, with raw cotton the second most valuable crop.
Opium poppy is the third most valuable crop in the world, with every square kilometre worth an average of $6m.
