Plants use carbon dioxide from the air and convert it into oxygen. Plants use the energy from sunlight to convert raw materials from the Earth into carbohydrates, fats, and oils. Humans depend on plant materials for food, feed for livestock, fiber, fuel, medicine, aesthetic value, and much more. Plants are affected by environmental factors, including frost-free periods or growing season, mean average temperature or growing degree days, and rainfall. These factors create unique growing conditions across the United States and throughout the world.
After conducting these activities, review and summarize the following agricultural literacy concepts:. We welcome your feedback! Please take a minute to tell us how to make this lesson better or to give us a few gold stars! Get a large wall chart of the United States and have each student add different crops to it in order to summarize crop-growing regions of the United States. Next have students research the social, economic, and ecological risks and benefits of changing a natural ecosystem as a result of human activity.
Ask them how these changes might influence crop-growing regions in the future. Students have researched environmental factors that affect where plants grow. Take this idea a step further and investigate how carrying capacity influences the population of particular plants. After further research, ask students to describe factors that affect the carrying capacity of an ecosystem and relate these to population growth. National Agriculture in the Classroom.
- Plant Biology and Agriculture - Opportunities in Biology - NCBI Bookshelf?
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Choose between standard or expedited shipping to make sure that your textbooks arrive in time for class. Wortman , a visionary US citizen and plant breeder who spent a great part of his career in international agricultural research, pointed to the urgent need in supporting agricultural research and development for the benefit of developing countries.
Wortman stated: "we as a nation can encourage our Agency for International Development, United Nations agencies such as the UNDP and FAO, and the World Bank and regional development banks to support efforts of the poorer and middle-income countries to accelerate production of staple foods crops and livestock and other primary agricultural products. Increasing world supply is crucial, and the scope of progress is enormous; in most countries, current yields are only a fraction of what they could be".
I must add to this wise statement made by Wortman more than 25 years ago: developing countries, as well, should reform their socio-economic and political systems that are highly corrupt and abusive, so that the current high level of poverty could be alleviated. Population growth in developing countries also needs to be regulated.
Without these needed reforms, science and technological advances will probably fail in alleviating poverty in developing countries Leisinger, Again , as referred to in the introduction of this paper, the successful experience of the Nobel Peace laureate, Dr. Muhammad Yunus and his Grameen Bank micro-crediting system, is a case in point.
It also pointed to the need for providing and maintaining adequate funding for basic research focused on fulfilling the demand for improved technology for agricultural progress and food security, particularly in developing countries.
The projected world population, based on assumed different human-fertility levels, ranges in round figures from 8 to 13 billion by Blake, ; Cohen, This anticipated increase in population points to the urgent need for an increasing agricultural productivity to secure and meet the expected food, feed and fiber demands. Such a goal requires immediate actions at the national and international levels.
Given that the needed socio-economic reforms worldwide are fulfilled, adequately-funded agricultural research both basic and applied can increase crop productivity above the current levels and can ensure enough food, feed and fiber for the projected world population without the need to reclaim new less-arable lands nor raping the precious natural resources in tropical forests. Advances in science and technology are enormous and its proper application to agricultural development surely can pay off shortly within the 21 st century.
Scientific research had already proved its success and utility in the 20 th century via the well-known agricultural "Green Revolution" that could be repeated over again. In the post-genomic era, and with obviating the negative and devastating effects of global climate changes, as now observed and documented IPCC, , the earth might become even greener and safer. Finally, I wish to conclude with a very wise statement by Mahatma Gandhi: "Earth has enough for our needs but not enough for our greed".
The help of Farah El-Sharkawy Navarro in searching the internet for references and information and typing the manuscript was appreciated. Acock B, Acock M Modeling approaches for predicting crop responses to climate changes. Crop Science Society of America, Madison. JARQ Crop Sci. Photosynthetica Plant Cell Environ. Springer, Berlin. Ashley DA, Boerma HR Canopy photosynthesis and its association with seed yield in advanced generations of a soybean cross.
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Principles of Plant Science : Environmental Factors and Technology in Growing Plants
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