A boron loaded super-absorbent hydrogel (BLSAH) was developed through in situ incorporation of boron (B) in a guar gum-based hydrogel and characterized with FTIR, thermo-gravimetric analysis (TGA), scanning electron microscopy (SEM), and swelling studies, showing maximum absorption up to 356 g/g. The release pattern of B from the BLSAH and its kinetics was studied in water as well as soil. The B release pattern of the BLSAH was also compared with the commercial B fertilizer, boronated single super phosphate (bSSP). The BLSAH, following the Fickian mechanism, released 38% B, as compared with 51% of the bSSP, during the incubation period of 30 days in soil. The half-life period for the BLSAH (96.25 days) in soil was almost triple that of the bSSP's half-life (33.32 days), which is indicative of the slow and controlled release of B from the BLSAH. Thus, owing to its sustained nutrient release ability, the synthesized BLSAH exhibited wide potential for applications in agriculture sector.

中文翻译：

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基于瓜尔胶的水凝胶作为受控微量营养素输送系统：农业应用中硼释放的机制和动力学

通过在瓜尔胶基水凝胶中原位掺入硼 (B) 开发了一种加载硼的超吸收水凝胶 (BLSAH)，并通过 FTIR、热重分析 (TGA)、扫描电子显微镜 (SEM) 和溶胀进行表征研究，显示最大吸收高达 356 g/g。在水和土壤中研究了 BLSAH 中 B 的释放模式及其动力学。BLSAH 的 B 释放模式也与商业 B 肥料、硼化单过磷酸钙 (bSSP) 进行了比较。BLSAH 遵循 Fickian 机制，在土壤中 30 天的潜伏期内释放了 38% 的 B，而 bSSP 为 51%。BLSAH 在土壤中的半衰期（96.25 天）几乎是 bSSP 半衰期（33.32 天）的三倍，这表明 B 从 BLSAH 缓慢且受控地释放。