Frequently asked questions


Q.  How soon will Adjust SL take effect following application? For optimal results, Adjust SL requires two hours before rain or frost occurs. After absorption, Adjust SL immediately begins to affect the gibberellin synthesis process. Under cool conditions, it will remain active in the plant until warmer conditions begin to promote stem elongation. Under persistent cool growing conditions, it may take longer to see the growth effect.
Q.  How can I be sure Adjust SL will be effective in cold weather? Adjust SL is formulated to work effectively at temperatures as low as 34°F. Chlormequat chloride (CCC) has a slow onset of actions, allowing safe manipulation of rooting and tillering in early growth stages.
Q.  How safe is Adjust SL on cereal grains? Adjust SL formulation is based on CCC. CCC has a slow onset of action which, in combination with CCC’s long residual activity, means it works gradually in the plant. To learn more about the working mechanisms of plant growth regulators, go to "About PGRs".
Q.  How can Adjust SL help maximize wheat yield? Adjust SL is a tool that ensures all other agricultural inputs and nutrient investments are protected and perform at full potential to grow healthy, high-yielding crops. At the same time, it allows for use of fertilizers with reduced risk of lodging. CCC, the active ingredient of Adjust SL, increases the chlorophyll formation and can result in more heads per acre, contributing to greater crop yield. To learn more about yield maximization through plant growth regulators, go to About PGRs.
Q.  How can Adjust SL help maximize straw yield? Upright straw is harvestable straw. Although Adjust SL can reduce plant height, the quality and standability would result in higher straw yield.
Q.  How do nitrogen and Adjust plant growth regulator complement each other? Adjust SL allows you to apply the maximum efficient nitrogen level while reducing the risk of excessive growth, which results in lodging and the associated costs.
Q.  Why apply Adjust SL in a dry season? The split application of Adjust SL gives growers the option to spray at reduced rates and decide later whether another application is needed. In a dry season, even applying at a reduced rate helps growers protect their crop input investments and yield potential. Also, benefits such as height reduction, head uniformity, and improved pollination can be observed. To learn more about the benefits of Adjust SL in varying conditions, go to Application recommendations.
Q.  Why apply Adjust in a wet season? If the season is wet early on, soil tends to be less compact and the risk of root lodging arises. In such circumstances, apply Adjust SL in growth stages Feekes 1‒5 (Zadoks 12‒30) at a reduced rate. However, if the season is wet later, stem lodging might become a risk. In that case, apply Adjust SL in growth stages Feekes 6‒9 (Zadoks 31‒39). To learn more about the benefits of Adjust SL in varying conditions, go to Application recommendations.
Q.  Why apply Adjust SL on a forward crop? If you have an early-planted forward crop with a lot of growth potential, stem lodging could be a risk. Use Adjust SL in growth stages Feekes 6‒9 (Zadoks 31‒39) to protect the high yield potential and your other agricultural input investments. To learn more about the benefits of Adjust SL in varying conditions, go to Application recommendations.
Q.  Why apply Adjust SL on a backward crop? If you have a backward crop and aim to maximize yields, you want to maximize tillers. Applying Adjust SL prior to stem extension (before Feekes 4) can reduce apical dominance and enhance tiller survival. Use Adjust SL in growth stages Feekes 1‒5 (Zadoks 12‒30) at a reduced rate and apply a second dose, depending on growth conditions in growth stages Feekes 6‒9 (Zadoks 31-39). To learn more about the benefits of Adjust SL in varying conditions, go to Application recommendations.
Q.  What is root lodging? Root lodging occurs when plant leverage is greater than its anchorage strength. Anchorage strength means how strongly a crop is anchored in the soil. Anchorage strength depends on spread and depth of the roots. For more information about how Adjust SL can help manage rooting, see Grower benefits.
Q.  What is stem lodging? Stem lodging occurs when the stems bend near ground level making them difficult to harvest and significantly reducing grain quality and yield. Stem lodging can happen because of various factors, including:

  • Heavy grain fill close to harvest that the stem can’t carry well
  • Unfavorable weather conditions such as rain and wind
  • Stems are weak due to overseeding or heavy nitrogen levels.
  • The crop variety is prone to lodging.

For more information about the risks and costs associated with lodging, see Grower benefits.
Q.  Why is lodging a problem? Lodged crops equal greater costs. Lower return on investment from overall agricultural inputs, decreased yield potential, decreased output quality, and reduced harvest efficiency are some of many risks and costs associated with lodging. For more information about how Adjust SL can help control the risk of lodging, see Grower benefits.
Q.  Why invest in Adjust SL if there’s no risk of lodging? Even in the absence of lodging, plant growth regulators can help maximize yield and harvest efficiencies compared to untreated crops. Due to the upright nature of the crop, pollination is optimized and improved airflow in turn reduces the crop exposure to fungal diseases.
Certain statements may not be applicable in all geographical regions. Product labeling and associated claims may differ based on government requirements.
Pending EPA registration, Adjust SL is not yet registered for sale or use in the U.S.