Supplementation of nutrients plays a vital role in the growth yields and quality attributes of the crops. An experiment and demo trials were conducted in CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP) research farm and at farmers’ field(s) simultaneously, to study the adequacy of additional nutrients application in menthol mint (Mentha arvensis L. cv. Kosi and Kranti) for improving productivity and profitability. Results of both trials clearly indicated that NPK (recommended dose) and micronutrients based fertilizers eventually leads to accrue the net income. Commercially grown menthol mint farmers benefitted by consequently improvising fresh herbage, oil content, oil yield, gross returns, net income and benefit-cost ratio (B:C ratio) (50.86%, 3.45%, 55.04%, 55.04%, 207.80%, and 50.75%, respectively in cv. Kosi) in treatment T₄ [NPK (100:60:40 kg ha⁻¹) + ZnSO₄.7H₂O @ 25 kg ha⁻¹)] concerning the recommended dose of NPK fertilizers T₁ [NPK (100:60:40 kg ha⁻¹)]. Simultaneously, for the second demo trial, conducted in the farmer’s fields, forty two farmers were selected for the cultivation of menthol mint. From the results, it was revealed that recommended dose of NPK fertilizers with the addition of zinc sulphate found significantly maximum yield and net returns in the plots; an increase of oil yields, gross returns, net income, and B:C ratio was 37.05%, 37.05%, 111.18%, and 32.88%, respectively in T₂ [NPK (100:60:40 kg ha⁻¹) + ZnSO₄.7H₂O @ 25 kg ha⁻¹)]. Data attained from soil analysis distinctly showed that moreover increasing the yields and return of menthol mint cultivation, the integration of vermicompost, macro-micro nutrients, and bio inoculants with the recommended dose of NPK remarkably upgrades the soil fertility status in terms of organic carbon, available N, P, and K.

营养补充对作物的生长产量和品质特性起着至关重要的作用。在CSIR中央药用植物和芳香植物研究所（CIMAP）的研究农场以及农民的田间同时进行了实验和演示试验，以研究薄荷薄荷（Mentha arvensis L.cv. Kosi和Kranti）以提高生产力和盈利能力。两项试验的结果清楚地表明，NPK（推荐剂量）和基于微量营养素的肥料最终会导致产生净收入。商业种植的薄荷薄荷农户因此而得益于即食草，油含量，石油产量，总收益，净收入和效益成本比（B：C比）（50.86％，3.45％，55.04％，55.04％，207.80％，治疗T中的比例为50.75％）₄ [NPK（100：60：40 kg ha ^-1）+ ZnSO ₄ .7H ₂ O @ 25 kg ha ^-1）]关于NPK肥料的推荐剂量T ₁ [NPK（100：60：40 kg ha ^-1））]。同时，在农民田间进行的第二次演示试验中，选择了42位农民种植薄荷薄荷。从结果可以看出，建议的氮磷钾肥料配施硫酸锌的剂量在田间具有明显的最大产量和净收益。在T ₂ [NPK（100：60：40 kg ha ^-1）+ ZnSO中，石油产量，总收益，净收入和B：C比率的增加分别为37.05％，37.05％，111.18％和32.88％。₄ .7H ₂ O @ 25 kg ha ^-1）]。从土壤分析中获得的数据清楚地表明，此外，薄荷薄荷种植的产量和回报增加，ver虫，宏微量营养素和生物接种剂与推荐剂量的NPK的结合显着提高了土壤肥力状况，包括有机碳，可用的N，P和K。