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ORIGINAL RESEARCH article

Front. Agron.
Sec. Agroecological Cropping Systems
Volume 6 - 2024 | doi: 10.3389/fagro.2024.1453976

No-till, crop residue management and winter wheat-based crop rotation management strategies under rainfed environment

Provisionally accepted
Aziz Nurbekov Aziz Nurbekov 1*Botir Khaitov Botir Khaitov 1,2*Muhammadjon Kosimov Muhammadjon Kosimov 2*Sokhib Islamov Sokhib Islamov 1*Dilrabo Qodirova Dilrabo Qodirova 1*Zulfiya Yuldasheva Zulfiya Yuldasheva 1*Jonibek Khudayqulov Jonibek Khudayqulov 1*Khafizakhon Ergasheva Khafizakhon Ergasheva 1*Ruhangiz Nurbekova Ruhangiz Nurbekova 3*
  • 1 Tashkent State Agrarian University, Tashkent, Uzbekistan
  • 2 FAO Silva Mediterranea, Rome, Lazio, Italy
  • 3 ISCAD, Tashkent, Uzbekistan

The final, formatted version of the article will be published soon.

    Rainfed agriculture is primarily limited by unstable low precipitation, poor soil fertility and monocropping, which are the main factors leading to decreased crop production. This long-term research was conducted under a rainfed agroecosystem from 2019 to 2023 on the sierozem soil of the Karshi steppe, Uzbekistan. Along with winter wheat (WW) which was the main crop covering 50% of each proposed cropping pattern, chickpea (CH), safflower (SA), flax (FL), barley (BA) and canola (CA) were evaluated to find the most suitable rotation systems under no-till (NT) i.e. NT1: WW-CH-WW-FL, NT2: CH-WW-SA-WW, NT3: WW-SA-WW-BA and NT4: SA-WW-CA-WW compared against continuous WW produced with conventional tillage (CT). Results showed that the integrated effect of NT x crop diversification x residue retention positively affected crop productivity; however, their impact was more pronounced were significantly higher under the NT2 treatment, but not with continuous WW under CT. The highest grain yield of WW in the 2020-2021 growing season was recorded under NT2 and NT4 treatments with values of 1.47 and 1.30 Mg ha -1 , while the lowest index (1.02 Mg ha -1 ) was found at the CT treatment. The grain yield in the NT treatments increased with the improvement of soil chemical and physical parameters, i.e. NPK and humus content. When comparing NT2 to CT treatment at the project end, the total N, P, and K values at the 0-20 cm soil profile were 27.9%, 13.9%, and 33.9% higher, respectively. This study concluded that Iimplementation of NT along with strategic selection of legumes incorporated into the cropping system and residue management can be prioritized as rehabilitation measures in rainfed croplands.

    Keywords: Arid region, no-till, Crop rotation, Residue retention, Rainfed condition, soil moisture, crop yield

    Received: 24 Jun 2024; Accepted: 25 Sep 2024.

    Copyright: © 2024 Nurbekov, Khaitov, Kosimov, Islamov, Qodirova, Yuldasheva, Khudayqulov, Ergasheva and Nurbekova. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Aziz Nurbekov, Tashkent State Agrarian University, Tashkent, Uzbekistan
    Botir Khaitov, Tashkent State Agrarian University, Tashkent, Uzbekistan
    Muhammadjon Kosimov, FAO Silva Mediterranea, Rome, Lazio, Italy
    Sokhib Islamov, Tashkent State Agrarian University, Tashkent, Uzbekistan
    Dilrabo Qodirova, Tashkent State Agrarian University, Tashkent, Uzbekistan
    Zulfiya Yuldasheva, Tashkent State Agrarian University, Tashkent, Uzbekistan
    Jonibek Khudayqulov, Tashkent State Agrarian University, Tashkent, Uzbekistan
    Khafizakhon Ergasheva, Tashkent State Agrarian University, Tashkent, Uzbekistan
    Ruhangiz Nurbekova, ISCAD, Tashkent, Uzbekistan

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