As a result, the study in China found that the cotton plants could also help protect nearby crops against damage by the insects.

VOA: special.2010.05.25

The biodiversity has shrunk for various reasons of profitability and as a consequence of that things like corn crops, and the orange crops in Florida are particularly susceptible to certain environmental conditions, certain pests, and certain types of blight.

生物多样性的减少源自利益的驱动,和玉米一样,佛罗里达的柑橘作物很容易受到,一定环境条件的影响,还有虫害和枯萎病

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Well, now one of the things farmers in history discovered is that it's very hard to do well as a farmer if all you do is grow the crops, because people normally don't use what you grow in the form in which you grow it.

关于农民我们在历史上能够得知的一件事是,当好农民很困难,特别是只种农作物的农民,因为人们一般不会将,你从地里种出来的东西留作种子

耶鲁公开课 - 古希腊历史简介课程节选

Scientists created high-yielding crops that produced bigger harvests in what became known as the Green Revolution.

VOA: special.2011.02.22

Weeding,seeding and watering requires at least as much work as crops grown in the open air.

VOA: special.2009.12.22

As the caterpillars feed on crops, their waste pollutes waterways and drinking wells.

VOA: special.2009.01.27

And Joom from Thailand wrote: I don't care where the crops come from, natural plants or genetic engineering, as long as we can produce food enough for people.

VOA: special.2010.05.18

We worked as our fathers did,". Now,the farmers plant their crops closer together and run water through narrow trenches.

VOA: standard.2009.12.10

Helping breeders quickly develop better varieties of all these crops will be crucial as the world population tops 9 billion by 2050 in the face of a changing climate.

VOA: standard.2010.02.01

And rural agri-businesses can mean a pathway out of poverty, There has been much controversy and opposition over the use of genetically modified crops as a means of boosting productivity.

VOA: standard.2010.03.29

Moon acknowledged that the military approach alone cannot solve the problems of Afghanistan, and called on the international community to help the country institute good governance, and such measures as rural electrification and replacement of opium production with profitable legal crops.

VOA: standard.2009.03.27