The guayulin content of guayule (Parthenium argentatum Gray) is subject to seasonal variation and follows specific patterns that are dependent on the accession and the organ (stems or leaves). However, little is known about guayulin in response to agronomic management such as irrigation or fertilization. A 24-month experiment was performed to investigate the accumulation of guayulin in one guayule accession (R-1040) and two hybrids (CAL-1 and AZ-2), in relation to crop system (irrigated or non-irrigated) and the nitrogen fertilizer units (NFU 0% or 100%). Irrigation increased biomass, which likely diluted guayulin concentration, but contributed to increase guayulins yield in both organs (stems and leaves). Fertilization had no effect on guayulin and resin production, but it increased the number of stems and total biomass. The pattern of accumulation of guayulins between stems and leaves was different. Differences were observed between the hybrids and the pure accession R1040, which was smaller in size but produced more guayulins. A strong relationship was found between guayulin yield and the production of rubber.

银胶菊( Parthenium argentatum )的菊花苷含量灰色）受季节变化的影响，并遵循依赖于种质和器官（茎或叶）的特定模式。然而，关于作为灌溉或施肥等农艺管理措施的愈创木林知之甚少。进行了一项为期 24 个月的实验，以研究一种银菊属植物品种 (R-1040) 和两种杂交品种 (CAL-1 和 AZ-2) 中与作物系统（灌溉或非灌溉）和氮素的积累。肥料单位（NFU 0% 或 100%）。灌溉增加了生物量，这可能稀释了瓜林素的浓度，但有助于增加两个器官（茎和叶）中的瓜林素产量。施肥对愈创木苷和树脂的产量没有影响，但它增加了茎的数量和总生物量。茎叶间的愈创木素积累模式不同。在杂种和纯种 R1040 之间观察到差异，R1040 尺寸更小，但产生更多的 guayulins。发现番石榴产量与橡胶产量之间存在密切关系。