Assessment of precise nutrient management through nutrient expert on productivity and profitability of zero-till maize

Q4 Agricultural and Biological Sciences

Indian Journal of Agronomy Pub Date : 2024-02-09 DOI:10.59797/ija.v68i4.5458

SEEMA SEPAT, BHAGYSHREE PHOGAT, R.S. BANA, DINESH KUMAR, S.L. MEENA

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引用次数: 0

Abstract

An experiment was conducted during the rainy (kharif) season of 2017 and 2018 at the ICAR-Indian Agricultural Research Institute, New Delhi, to evaluate the effect of tillage and nutrient-management options on yield, nutrient uptake, residual soil-fertility status, and enzymatic activities in maize (Zea mays L.). The zero-tillage with crop residue at 3.5 t/ha (ZT + R) and conventional tillage with crop residue at 3.5 t/ha (CT + R) enhanced the grain yield (6.2–17.0%) of maize compared to CT without residue (4.40 t/ha). High cost of cultivation was recorded in CT + R (44.8 × 103 `/ha), while high net returns were found in ZT + R (37.6 × 103 `/ha). In ZT + R, the addition of wheat residue enhanced N, P, and K uptake in grain by 19.41, 12.81 and 13.92%, respectively over CT. Available N (182 kg/ha), available P (13.8 kg/ha), and exchangeable K (318 kg/ha) were found highest with ZT + R. Nutrient expert system (NES) enhanced the grain yield (5.30 t/ha) and net returns (43.0 × 103 `/ha) compared to no application of nutrients (control) (3.35 t/ha and 17.9 × 103 `/ha) and recommended dose of fertilizer (RDF) (4.70 t/ha and 34.8 × 103 `/ha). Higher activity of dehydrogenase (DHA) (25.9 TPF μg/g/h) and microbial biomass C (130 μg/g) were found with NES. An increase of 57.96–58.4% in N uptake was found with NES over RDF (80.0 kg/ha). The nutrient expert system (NES) and 125% of RDF left higher amount of residual N, P and K in soil than the control. Overall, nutrient expert system under zero-tillage with crop residue at 3.5 t/ha can increase the productivity and profitability in maize.

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通过养分专家评估精确养分管理对零耕作玉米生产率和收益率的影响

在 2017 年和 2018 年雨季（收获季节）期间，新德里的印度农业研究所（ICAR-Indian Agricultural Research Institute）进行了一项实验，以评估耕作和养分管理方案对玉米（Zea mays L.）产量、养分吸收、残留土壤肥力状况和酶活性的影响。与不施秸秆的传统耕作（4.40 吨/公顷）相比，施 3.5 吨/公顷作物秸秆的零耕作（ZT + R）和施 3.5 吨/公顷作物秸秆的传统耕作（CT + R）提高了玉米谷物产量（6.2-17.0%）。CT + R 的种植成本较高（44.8 × 103 `/公顷），而 ZT + R 的净收益较高（37.6 × 103 `/公顷）。在 ZT + R 中，与 CT 相比，添加小麦残留物可使谷物对氮、磷和钾的吸收率分别提高 19.41%、12.81% 和 13.92%。与不施用养分（对照）（3.35 吨/公顷和 17.9 × 103 `/公顷）和推荐剂量肥料（RDF）（4.70 吨/公顷和 34.8 × 103 `/公顷）相比，养分专家系统（NES）提高了谷物产量（5.30 吨/公顷）和净收益（43.0 × 103 `/公顷）。NES 可提高脱氢酶 (DHA) 的活性（25.9 TPF μg/g/h）和微生物生物量 C（130 μg/g）。与 RDF（80.0 千克/公顷）相比，NES 的氮吸收量增加了 57.96-58.4%。养分专家系统（NES）和 125% RDF 在土壤中残留的氮、磷、钾含量高于对照。总之，在作物秸秆为 3.5 吨/公顷的零耕作条件下，养分专家系统可以提高玉米的生产率和收益率。

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来源期刊

Indian Journal of Agronomy Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

0.50

自引率

0.00%

发文量

期刊介绍： Indian Journal of Agronomy welcomes concise articles presenting original research data based on field experiments on all aspects of agronomy in different crops and related cropping systems. • The journal publishes only full length comprehensive articles based on new approaches/findings in English only. • Review articles are also considered but these are normally solicited by Editorial Board. However, the authors who wish to contribute a review on their own based on their standing in the relevant field may contact the Secretary or Chief Editor with a broad outline before submitting the manuscript.