Comparative Evaluation of Nano Urea and Urea Foliar Sprays on Nutrient Uptake and Soil Fertility in Fodder Maize (Zea mays L.) Production

Journal of Scientific Research and Reports Pub Date : 2024-04-18 DOI:10.9734/jsrr/2024/v30i52011

.. Arun Kumar, M. R., .. Fathima, P. S., .. Yogananda, S. B., .. Sowmyalatha, B. S

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Abstract

An investigation on “Comparative Evaluation of Nano Urea and Urea Foliar Sprays on Nutrient Uptake and Soil Fertility in Fodder Maize (Zea mays L.) Production” was conducted during kharif 2022 at ZARS, V. C. Farm, Mandya, on sandy loam soil. The experiment was laid out in RCBD with eleven treatments replicated thrice. Treatments include combinations of basal application of urea at 50, 75 and 100% recommended dose of N with varied levels of nano urea and urea spray at 20 and 40 DAS, which were compared with RDF and control (RDF without N). Among the treatments tested, 100% recommended dose of N + Urea @ 2% spray recorded significantly higher green fodder yield (427.70 q ha-1) and dry matter yield (91.64 q ha-1), nutrient uptake (153.49 kg ha-1 of N, 33.37 kg ha-1of P and 121.29 kg ha-1 of K) and was on par with 100% recommended dose of N + Nano urea @ 0.4% spray. Available N, P2O5 and K2O status in the post-harvest soil varied significantly but pH, EC and OC was not significantly influenced by varied levels of recommended dose of nitrogen with different foliar concentrations of nano urea and urea. Higher soil available nitrogen, phosphorus and potassium was recorded 100% recommended dose of N + Urea @ 2% spray (213.25, 42.58, 189.06 kg ha-1, respectively) followed by 100% recommended dose of N + Nano urea @ 0.4% spray (200.70, 40.87 and 187.95 kg ha-1, respectively).

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纳米尿素和尿素叶面喷施对饲料玉米（玉米）生产中养分吸收和土壤肥力的比较评估

2022 年印度旱季期间，在曼迪亚的 ZARS, V. C. 农场进行了一项关于 "纳米尿素和尿素叶面喷施对饲料玉米（Zea mays L. ）生产中养分吸收和土壤肥力的比较评估 "的调查，土壤为沙壤土。实验采用 RCBD 方法，共设 11 个处理，重复三次。处理包括按 50%、75% 和 100%的推荐氮剂量基施尿素，并在 20 DAS 和 40 DAS 施用不同水平的纳米尿素和尿素喷雾，并与 RDF 和对照（不施氮的 RDF）进行比较。在所测试的处理中，100%推荐剂量的氮+尿素（2%）喷施法的青饲料产量（427.70 q ha-1）和干物质产量（91.64 q ha-1）、养分吸收量（氮153.49 kg ha-1、磷33.37 kg ha-1、钾121.29 kg ha-1）显著高于100%推荐剂量的氮+纳米尿素（0.4%）喷施法。收获后土壤中的可利用氮、P2O5 和 K2O 含量变化很大，但 pH 值、EC 值和 OC 值没有受到不同水平的氮推荐剂量和不同叶面喷施浓度的纳米尿素和尿素的显著影响。土壤中可利用的氮、磷、钾含量较高的是 100%推荐剂量的氮+尿素 @ 2% 喷雾（分别为 213.25、42.58 和 189.06 千克/公顷-1），其次是 100%推荐剂量的氮+纳米尿素 @ 0.4% 喷雾（分别为 200.70、40.87 和 187.95 千克/公顷-1）。

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Journal of Scientific Research and Reports

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