Mala Rajendran, Selvaraj Ruby Celsia Arul, Sundaram Vidhya Barathi, Rajan Raja Blessina Siva Shanmuga, Gurusamy Uma Maheswari
Department of Biotechnology, Mepco Schlenk Engineering College (Autonomous), Sivakasi-626005, Tamilnadu, India.
Recent Pat Nanotechnol. 2017;11(1):50-62. doi: 10.2174/1872210510666160727093554.
The excessive use of fertilizers and pesticides has distorted soil composition, fertility and integrity with non-desirable environmental and ecological consequences. A strategy was designed to prepare a nano structured slow release fertilizer system that delivers nutrients and plant growth promoting rhizobacteria simultaneously. Slow release nano phosphate and potash fertilizer was prepared by blending the nano emulsion of fertilizer with neem cake and PGPR. Slow release nano phosphate and potash fertilizer was prepared by blending the nano emulsion of fertilizer with neem cake and PGPR. Few patents relevant to the topic have been reviewed and cited.
The influence of nano structured slow release fertilizer on the biochemical characteristics, soil and yield attributes of Vigna radiata was studied in the field by randomized block design. The treatments used to evaluate the effect of nano SRF were a control (without any fertilizer), neem cake, chemical fertilizer, PGPR and nano SRF. Germination, specific activity of enzymes, carbohydrates, protein, photosynthetic pigments, root nodule number and microbial population were assessed by standard methods.
The size of the nano urea slow release fertilizer ranged from 52.41 nm to 69.86 nm, and the size of the phosphate and potash fertilizer ranged from 81.85 nm to 87 nm. The weights of 1000 grains were 31.8 g, 33.28 g, 33.39 g, 36.65 g and 44.90 g in the control, neem cake, chemical fertilizer, PGPR and nano SRF, respectively. The protein concentrations were 162 mg g-1 in the control, 231 mg g-1 in the neem cake, 192 mg g-1 in the chemical fertilizer, 285 mg g-1 in the PGPR and 336 mg g-1 in the nano SRF. Nano slow release fertilizer treatment has stimulated germination and biochemical characteristics in Vigna radiata that are positively reflected in the yield attributes.
化肥和农药的过度使用已经破坏了土壤成分、肥力和完整性，带来了不良的环境和生态后果。设计了一种策略来制备一种纳米结构缓释肥料系统，该系统能同时提供养分和促进植物生长的根际细菌。通过将肥料的纳米乳液与印楝饼和植物根际促生菌混合，制备了缓释纳米磷肥和钾肥。已经查阅并引用了一些与该主题相关的专利。
采用随机区组设计在田间研究了纳米结构缓释肥料对绿豆生化特性、土壤和产量属性的影响。用于评估纳米缓释肥料效果的处理包括对照（不施任何肥料）、印楝饼、化肥、植物根际促生菌和纳米缓释肥料。通过标准方法评估发芽率、酶的比活性、碳水化合物、蛋白质、光合色素、根瘤数和微生物种群。
纳米尿素缓释肥料的粒径范围为52.41纳米至69.86纳米，磷肥和钾肥的粒径范围为81.85纳米至87纳米。对照、印楝饼、化肥、植物根际促生菌和纳米缓释肥料处理下1000粒种子的重量分别为31.8克、33.28克、33.39克、36.65克和44.90克。蛋白质浓度在对照中为162毫克/克，在印楝饼中为231毫克/克，在化肥中为192毫克/克，在植物根际促生菌中为285毫克/克，在纳米缓释肥料中为336毫克/克。纳米缓释肥料处理促进了绿豆的发芽和生化特性，这在产量属性上得到了积极体现。
