Overview
Anti-fall agents are plant growth regulators designed to minimize premature fruit or flower abscission, a natural process where plants shed organs to conserve resources. These formulations typically contain synthetic auxins (e.g., naphthaleneacetic acid/NAA) or cytokinins that interfere with the abscission layer formation. Developed in the mid-20th century, modern variants combine multiple active ingredients for broader crop compatibility. Their use is particularly critical in high-value crops where even 10-15% fruit drop reduction significantly impacts profitability. Commercial products are classified as either systemic (absorbed by plant tissues) or contact (forming protective films). Regulatory approvals vary by region, with strict limits on residue levels in food crops. Leading agricultural research institutions like the USDA-ARS continue to refine formulations for reduced environmental persistence while maintaining efficacy.
Physical and Chemical Properties
Most liquid anti-fall agents are formulated as emulsifiable concentrates (EC) or suspension concentrates (SC), with pH ranges of 5.5-7.0 to minimize plant stress. The active ingredients often exhibit high adhesion properties, facilitated by surfactants that enhance leaf coverage. Stability testing under accelerated conditions (54°C for 14 days) is standard to ensure 2-year shelf life. Key chemical characteristics include low volatility (to prevent drift) and selective absorption rates that vary by plant species. Advanced formulations incorporate UV blockers to extend field longevity. Compatibility with common fungicides/pesticides is manufacturer-specific; jar tests are recommended before tank mixing. Freeze-thaw stability is critical for temperate climate storage.
Main Applications
Primary application occurs during physiological fruit drop periods: 1-3 weeks after petal fall for pome fruits (apples/pears) and at color break for citrus. Spray volumes range from 500-1500 L/ha depending on canopy density, with airblast sprayers being most efficient for orchards. Recent innovations include microencapsulated timed-release versions for prolonged activity. Beyond fruit crops, the floral industry uses specialized anti-fall agents on cut flowers (e.g., roses) to prevent bud drop during transport. Dosages are strictly regulated—over-application can cause phytotoxicity or abnormal fruit development. Integrated with calcium sprays, these agents also help prevent storage disorders like bitter pit in apples.
Safety and Storage
Formulations containing 2,4-D require extra precautions due to potential herbicide drift effects. Buffer zones of 15-30m from sensitive crops are mandatory in many jurisdictions. Secondary containers must be labeled with SDS information and never repurposed for food/feed storage. Bulk storage tanks should have secondary containment capable of holding 110% volume. Spill kits with absorbent polymers (not sawdust) should be onsite. Incompatible materials include strong oxidizers and alkaline solutions that may degrade active ingredients. Disposal of empty containers follows triple-rinsing or pressure-rinsing protocols per EPA guidelines.
B2B Procurement Guide
Commercial buyers should prioritize suppliers with Good Agricultural Practice (GAP) certification and batch-specific certificates of analysis. Minimum order quantities typically start at 200L for liquids or 25kg for powders, with palletized shipping to prevent drum damage. Key procurement considerations include: 1) Local efficacy data for target crops 2) Availability of adjuvant systems for hard water areas 3) Flexibility in payment terms during off-seasons 4) Technical support for resistance management planning. Leading manufacturers like Valent BioSciences and Fine Americas offer customized formulation services for large-scale growers.
Related Manufacturers
- 主营：镭雕助剂、阻燃剂、抗滴落剂、增韧剂、润滑剂、相容剂、成核剂、抗氧化剂、磷酸酯类阻燃剂、开口爽滑剂、紫外线吸收剂、镭雕粉、镭雕母粒、阻燃母粒
- 主营：阻燃剂、润滑剂、抗氧剂、抗滴落剂、增韧剂、防老化剂、扩散油
- 主营：LCP、PA66、PSU、TPEE、PEEK、PA12、PBT/ASA、PPSU、PPS、PC、PC/ABS、ABS、润滑脂、PTFE、特富龙
- 主营：GF增强POM、工程料PPA、陶氏热熔胶、增韧剂POM、陶氏增韧剂、金属粘合剂、透明尼龙、耐磨 PTFE细粉、电绝缘TPV、PVDC阻隔乳液、杜邦超韧尼龙、杜邦PTFE乳液、无卤阻燃尼龙、注塑级POM、分散液PTFE、陶氏沙林树脂、抗UVPOM、EEA热熔胶、铁氟龙乳液、耐寒尼龙ST801、耐刮花PC、热塑性弹性体TPV、马来酸酐接枝、尼龙pa66、导电PC塑料
- 主营：防锈剂、抗菌剂、银离子抗菌剂、PVC稳定剂、TPU雾面剂、PVC增弹剂、脱模剂、抗菌防霉剂、抗氧化剂、抗滴落剂、螺杆清洗料、PTFE微粉、模具顶针油
- 主营：化填充、凝材料、密闭墙、阻化剂、防灭火剂、防灭火材料、防灭火抑制、高水填充、注浆材料、加固材料、原创材料、开采充填、阻化材料、水利设施、堵风材料、充填材料、高水材料、万方矿山、灌浆材料、抑氧填充、采空区堵漏、矿用密封材料、石油工程堵漏、开采支护材料、注浆堵水材料
- 主营：水性流平剂、油性流平剂、润湿流平剂、非硅流平剂、含氟流平剂、水性消泡剂、油性消泡剂、油墨消泡剂、非硅消泡剂、工业漆消泡剂、聚氨酯消泡剂、UV消泡剂、水性分散剂、油性分散剂、炭黑分散剂、润湿分散剂、颜料分散剂、附着力促进剂、防流挂助剂、农用助剂、织物整理剂、其他助剂、电子用助剂、反应性硅油
- 主营：航空润滑油、航空液压油、航空润滑脂、航空密封剂、航空胶粘剂、航空清洗剂、2号防护油、j-133胶粘剂、航空冷却液、飞马2号润滑油、10号航空液压油、15号航空液压油、65号冷却液、中石化系列润滑油脂、中石油系列润滑油脂
- 主营：热塑性弹性体、石油树脂、科腾SEBS、功能助剂、耐刮剂、TPU雾面剂、阻燃剂、TPU流平剂、除味剂、鞋材止滑剂、纯单体树脂
- 主营：瞬干胶、平面胶、结构胶、养护剂、润滑剂、抗咬合剂、电器清洗剂、螺牙防松胶、厌氧锁固剂、固体胶棒、螺纹胶棒、魔力胶棒、螺牙紧固胶、平面密封胶、环氧树脂胶
- 主营：瓶盖料、眼镜料、酮树脂、油墨添加防滴落剂、eaa塑胶、lgea28150、led灯罩、氟乙烯、eva法国、pom德国、tpu德国、聚乙烯、eva韩国、eva副牌、口罩料、pc韩国lg、大金m111、茂金属聚乙烯、TPE透明颗粒、抗静电色母粒、PP增透母粒、HPPA塑料颗粒、PI粉聚酰亚胺树脂粉、PTFE微粉填料、低熔点尼龙PA12、PTFE微粉
- 主营：聚丙烯PP、聚甲醛POM、聚碳酸酯PC、ABS、PC/ABS、PA6、PA66、EVA、PCTG、PVDF、POE、塑胶颗粒、工程塑料、TPU、中石化、台塑、旭化成、杜邦、宝理、韩国LG、PMMA、PA12、燕山石化
- 主营：电气用具、电线电缆、模压塑料、耐热阻燃剂、管道系统、热熔胶粉、衬里管件、挤出成型品、模压挤出成型、阻燃高纯度铁氟
- 主营：红外色粉、钛白粉、镭雕粉、增韧剂、阻燃剂、紫外线吸收剂、抗滴落剂、抗冲击改性剂、发泡剂、润滑剂、朗盛阻燃剂、台塑增韧剂、双键抗氧剂、韩纳诺防滴落剂、优缔紫外线吸收剂、德国意慕利润滑剂、德国科莱恩润滑剂、日本钟渊增韧剂、日本三井增韧剂、进口副牌增韧剂、韩国松原热稳定剂、工程塑料、捷克钛白粉、泰国石化EMA、德国默克镭雕粉
- 主营：碳化硅管道修补料、耐磨陶瓷片胶、耐磨涂层、耐磨修补剂、碳化硅气动耐磨防护剂、水泥厂窑尾袋收尘防腐、风机叶轮防腐防积灰、耐磨防护剂、球磨机专用耐磨防护剂、可涂刷陶瓷防护剂、易刮涂小颗粒碳化硅、电厂吸收塔浆液泵修复、脱水机橡胶带修补、泵叶轮修复节能涂层、耐腐蚀涂层、电厂脱硫管道籿胶修补、轴磨损修复修、圆锥破籿粄填充胶背籿、高炉本体煤气治理堵漏、输送带接头粘接及修补产品、卡邦65背籿胶材料