The most difficult crops riddles A list of crops related questions that are most often answered incorrectly Botany quiz How is the soilless cultivation of plants called?Hydroponics is a subset of hydroculture and is a method of growing plants using mineral nutrient solutions, in water, without soil. Terrestrial plants may be grown with their roots in the mineral nutrient solution only or in an inert medium, such as perlite or gravel.hard 51% hydrologyhydrology9%hydroculturehydroculture19%hydroponicshydroponics51%hydrofarminghydrofarming19%Created by: Paweł Kołodziejczyk. Statistics based on 11343 answers in 2 languages »plants riddles » What kind of plantation is that?Asparagus. Hilling, earthing up or ridging is the technique of piling soil up around the base of a plant, which buries the normally above-ground part of the plant. Hilling promotes the desired growth of asparagus, it also prevents the production of chlorophyl, which keeps asparagus pale and delicate.hard 53% potatopotato18%gingerginger22%asparagusasparagus53%sugar beetsugar beet5%Created by: globalquiz.org. Statistics based on 6136 answers in 2 languages »agriculture riddles » Which crop makes these fields blue?Lavender is grown commercially for the extraction of essential oils. It is also grown as a condiment and used in salads and dressings. There is a color named for the shade of its flowers.average 69% HeatherHeather23%VioletsViolets4%IndigoIndigo2%LavenderLavender69%Created by: Steve Lamberty. Statistics based on 11207 answers in 2 languages »farming riddles » What kind of plantation is that?Asparagus. Young shoots of asparagus are covered to exclude light to prevent photosynthesis and the production of chlorophyll, and thus remain pale in color and delicate in flavor and texture. This technique is called blanching.easy 78% sugar beetsugar beet11%asparagusasparagus78%horse radishhorse radish7%carrotscarrots2%Created by: globalquiz.org. Statistics based on 6669 answers in 2 languages »botany riddles » What kind of plantation is that?Tobacco is easy to be recognized because of its large leaves. Production of tobacco hit its top in 1992, during which 7.5 million tons of leaf were produced. Later, it dropped to 5.7 million tons in 1997. Today however, the production is growing due to increased productivity by developing nations. It was 7.1 million tons in 2010.easy 78% tobaccotobacco78%teatea12%cottoncotton8%grapesgrapes0%Created by: globalquiz.org. Statistics based on 6433 answers in 2 languages »botany riddles » Which crop makes these fields yellow?Rapeseed was the third leading source of vegetable oil in the world in 2000, after soybean and oil palm. In Europe, rapeseed is primarily cultivated for animal feed. The crop is also grown as a winter-cover crop. It provides good coverage of the soil in winter, and limits nitrogen run-off.very easy 90% corncorn4%potatopotato1%rapeseedrapeseed90%sunflowersunflower4%Created by: Monica Stiller. Statistics based on 14222 answers in 2 languages »colors riddles » Play botany quiz and see all the questions.