Importance
Phytophthora root and stem rot of soybean was first observed in the USA in Indiana in 1948 and its causal agent, Phytophthora sojae, first identified in 1958. In the 1970s, soybean plants only had one single-resistance gene, meaning they were more susceptible to an infection. Eventually plants with this gene were killed by new races of Phytophthora sojae. As a result, several states suffered significant yield losses particularly in the state of Ohio, which lost 300,000 acres of soybean plants in a year. Soon thereafter, a variety of new disease prevention methods were implemented and as a result this disease is currently one of the well-managed and well-known soybean diseases in the USA.
Read more about this topic: Phytophthora Sojae
Famous quotes containing the word importance:
“Never before has a generation of parents faced such awesome competition with the mass media for their childrens attention. While parents tout the virtues of premarital virginity, drug-free living, nonviolent resolution of social conflict, or character over physical appearance, their values are daily challenged by television soaps, rock music lyrics, tabloid headlines, and movie scenes extolling the importance of physical appearance and conformity.”
—Marianne E. Neifert (20th century)
“Coming together again after a long day apart can be an experience where joy, relief, anger, and fatigue are all present in different degrees both for the parent and for the child. Because of their importance in marking the resumption of direct contact, reunions deserve as much attention and care as separations to enhance the relationship between parent and child.”
—Alicia F. Lieberman (20th century)
“For even satire is a form of sympathy. It is the way our sympathy flows and recoils that really determines our lives. And here lies the vast importance of the novel, properly handled. It can inform and lead into new places our sympathy away in recoil from things gone dead. Therefore the novel, properly handled, can reveal the most secret places of life: for it is the passional secret places of life, above all, that the tide of sensitive awareness needs to ebb and flow, cleansing and freshening.”
—D.H. (David Herbert)