The Effect of New Nano-Released 1,1-Dimethyl-Piperidinium Chloride (DPC) Drip Application on Cotton Agronomic Traits

The use of 1,1-dimethyl-piperidinium chloride (DPC) in Xinjiang is one the necessary measures for regulating cotton populations and optimizing canopy structure. However, mechanical spraying involves operation energy consumption, which can alternatively be achieved via drip application. In present study, to investigate effect application, two types hydrophobic nano-released DPCs were used regulate plant type at different dosages. DPC dripingation reduced height by more than 10 cm width 4 cm, improved with increasing concentration times. main control was 6th–10th nodes stem, observed 1st 2nd fruit branch. SPAD value higher that group during initial stages. An irregular downward trend subsequent proline content increased concentrations DPC. There no significant difference soil sites. decreased 30% seventh day after dripping, 2–4 μg·g−1 each treatment. At 15 days lower 1 all treatments. number harvested plants 150,000 plants·hm−2, bolls per least one, compared control. final yield seed 300 kg·hm−2, a maximum increase 1672.01 kg·hm−2. Considering DPCs, worked better conventional terms height, width, degradation boll formation. Nano-released play an even role chemical regulation irrigation.