The meaning of BASIC CROP is an agricultural product deemed of sufficient economic or political importance to be designated by the U.S. Congress for special production controls or price supports.
Importance of weed management; Components of integrated weed management including the monitoring of weed infestation; Weed control strategies that farmers can implement including land preparation or tillage systems and crop rotation.关键词: biological control chemical control crop production crop weed ...
The meaning of BASIC CROP is an agricultural product deemed of sufficient economic or political importance to be designated by the U.S. Congress for special production controls or price supports.
书名: PLANT EMPOWERMENT-THE BASIC PRINCIPLES 作者: P.A.M. Geelen/J.O.Voogt/P.A. van Weel 页数: 328 出版社: letsgrow.com 出版年: 2019 CHAPTER 1 Notes 目的意义: 人口剧增,缺少食物,所以出现温室。 由于资源缺乏,人类研究温室科技,也成功了,但是太贵了,无法广泛应用。从可持续种植培育作物的角度,...
Journal of Plant Nutrition 28:1975 -1999. N. K. Fageria (2005): Soil Fertility and Plant Nutrition Research Under Controlled Conditions: Basic Principles and Methodology.Fageria, N. K. 2005. Soil fertility and plant nutrition research under controlled conditions: Basic principles and ...
The production value of the basic metals manufacturing industry in the Netherlands increased by 3.7 billion euros (+51.73 percent) in 2021. With 10.8 billion euros, the production value thereby reached its highest value in the observed period. The production value is defined as turnover, plus or...
The production value of the basic metals manufacturing industry in Switzerland increased by 1 billion euros (+23.01 percent) in 2021 in comparison to the previous year. With 5.4 billion euros, the production value thereby reached its highest value in the observed period. The value of production ...
of land in the world, causing 7–8% productivity loss, becoming a key constraint to global crop production and a serious threat to food security [3]. Therefore, obtaining salt tolerance is very important for realizing the dual challenges of global food security and the sustainable development ...
2. systematic knowledge of the physical or material world gained through observation and experimentation. 3. any of the branches of natural or physical science. 4. systematized knowledge in general. 5. knowledge, as of facts or principles; knowledge gained by systematic study. 6. a parti...
The choice of ingredients is based on general nutritional principles combined with cost and availability of ingredients. Scientific, long-term feeding trials are not carried out. The nutrient value, vitamin and mineral content of a diet is calculated by extrapolating figures taken from data tables ...