If you garden, 农场, or endeavor to grow anything in the ground, 你已经成为一个新产品的目标受众营销下的模糊, hyper-modern moniker “biostimulant.”
Biostimulants are generating so many claims and so much hype, 监管机构正在努力跟上评估和分类的步伐. Although the products have been around for decades, they have just recently been recognized in the 2018 Farm Bill.
就在生物兴奋剂朝着广泛常规使用迈出了第一步的时候，美国已经开始着手研究它.S. 农业部(USDA)和全国各地的州政府机构还没有就生物刺激素的适用范围和如何监管达成一致, though they seem to belong somewhere near 肥料s, 农药, or soil amendments.
What is a biostimulant?
According to the 2018 Farm Bill, a “plant biostimulant” is “…a substance or micro-organism that, when applied to seeds, 植物, or the rhizosphere, 刺激自然过程，提高或促进营养吸收, nutrient efficiency, tolerance to abiotic stress, or crop quality and yield.” This includes a wide variety of materials, including
• Plant extracts
• Humic/fulvic acids
• Proteins and amino acids (plant or animal origin)
• Beneficial elements [Silicon (Si), Aluminum (Al)]
• Beneficial bacteria
• Beneficial fungi [mycorrhizae]
Why are people interested in using biostimulants in ag?
人们对生物兴奋剂重新产生了兴趣，因为它们有潜力发挥作用. Some of the claimed benefits include
• Improved plant and root growth
• Improved nutrient use
• Resistance to drought, insects, and diseases
• Improved end use quality of the harvested crop
What 植物 are they made from?
生物兴奋剂中最常见的植物提取物是从海带中提取的, but others include soy protein hydrolysate, willow bark extract, stinging nettle extract, Yucca extract, and aloe extract.
Are they a pesticide? If not, what’s the difference?
其中一些生物兴奋剂符合农药的定义. 例如, 海藻提取物含有相对较高水平的植物激素, which increase plant and root growth. 这将属于联邦杀虫剂的“植物调节剂”农药类别, 杀真菌剂, and Rodenticide Act (FIFRA).