Plant Nutrition Laboratory, Department of Soil Science and Agriculture Chemistry, University of Agricultural Sciences, GKVK, Bengaluru, Karnataka, 560065, India.
Agricultural Research Station, Pavagada, Tumkur, Karnataka, 561202, India.
Sci Rep. 2022 Apr 4;12(1):5604. doi: 10.1038/s41598-022-09591-1.
Yellow gypsum (YG), a synthetic product from Linz-Donawitz slag containing high iron (Fe) (5.41%), zinc (Zn) (0.37%) and silicon (Si) (3.41%) can be used as a source of these nutrients along with calcium (Ca) and sulphur (S) for groundnut production. Three field experiments were conducted to know the effect of different rates (500 and 625 kg YG ha) and time of application (basal alone and basal + split) of YG on growth, yield and economic returns of groundnut, and micronutrient and Si availability and their uptake in comparison with basal application of 500 kg natural gypsum (NG) ha. Basal alone and basal + split application of YG significantly increased the growth, yield and economic returns of groundnut. Further, it increased the soil pH, availability of micronutrients, Si and their uptake by haulm and kernel of groundnut over NG. Irrespective of the location, YG application recorded higher plant available nutrient (PAN) coefficient of micronutrients, while NG application recorded higher PAN recovery coefficient of Si. Basal + split application of YG resulted in better growth and yield of groundnut than basal application of YG. In conclusion, YG can be a potential alternative for NG as a source of Fe, Zn and Si along with Ca and S for groundnut production.
黄石膏（YG）是一种由林茨-多纳维茨渣制成的合成产品，含有高铁（Fe）（5.41%）、锌（Zn）（0.37%）和硅（Si）（3.41%），可作为钙（Ca）和硫（S）的来源，用于花生生产。进行了三项田间试验，以了解不同用量（500 和 625 kg YG ha）和施用时间（基肥单独和基肥+分施）对花生生长、产量和经济效益的影响，以及与施用 500 kg 天然石膏（NG）ha 相比，微营养素和 Si 的有效性及其在花生茎叶和果核中的吸收。单独施基肥和基肥+分施 YG 显著增加了花生的生长、产量和经济效益。此外，它还增加了土壤 pH 值、微营养素、Si 的有效性及其在花生茎叶和果核中的吸收。无论地点如何，YG 施用都记录了更高的植物有效养分（PAN）系数，而 NG 施用则记录了更高的 Si 的 PAN 回收系数。与单独施基肥相比，基肥+分施 YG 可促进花生更好地生长和结实。总之，YG 可以作为 NG 的替代品，作为花生生产中 Fe、Zn 和 Si 以及 Ca 和 S 的来源。
