Editing Sustainable agriculture (section)

===Water===
[[Water efficiency]] can be improved by reducing the need for [[irrigation]] and using alternative methods. Such methods include: researching on [[drought]] resistant crops, monitoring plant [[transpiration]] and reducing soil [[evaporation]].<ref>{{Cite journal|last1=MEI|first1=Xu-rong|last2=ZHONG|first2=Xiu-li|last3=Vincent|first3=Vadez|last4=LIU|first4=Xiao-ying|date=2013-07-01|title=Improving Water Use Efficiency of Wheat Crop Varieties in the North China Plain: Review and Analysis|journal=Journal of Integrative Agriculture|volume=12|issue=7|pages=1243–1250|doi=10.1016/S2095-3119(13)60437-2|url=http://oar.icrisat.org/6896/1/JIA_12_7_1243-1250_2013.pdf|doi-access=free|bibcode=2013JIAgr..12.1243M }}</ref>

Drought resistant crops have been researched extensively as a means to overcome the issue of [[Water scarcity|water shortage]]. They are [[Genetic engineering|modified genetically]] so they can adapt in an environment with little water. This is beneficial as it reduces the need for irrigation and helps conserve water. Although they have been extensively researched, significant results have not been achieved as most of the successful species will have no overall impact on water conservation. However, some grains like [[rice]], for example, have been successfully genetically modified to be drought resistant.<ref>{{Cite journal|last1=Hu|first1=Honghong|last2=Xiong|first2=Lizhong|date=2014-01-01|title=Genetic Engineering and Breeding of Drought-Resistant Crops|journal=Annual Review of Plant Biology|volume=65|issue=1|pages=715–41|doi=10.1146/annurev-arplant-050213-040000|pmid=24313844|bibcode=2014AnRPB..65..715H }}</ref>