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Tillage Effects on Cotton Performance and Soil Quality in an Irrigated Arid Cropping System

Author

Listed:
  • Omololu John Idowu

    (Department of Extension Plant Sciences, New Mexico State University, Las Cruces, NM 88003, USA)

  • Sifat Sultana

    (Department of Plant & Environmental Sciences, Clemson University, Clemson, SC 29634, USA)

  • Murali Darapuneni

    (Department of Plant & Environmental Sciences, New Mexico State University, Las Cruces, NM 88003, USA)

  • Leslie Beck

    (Department of Extension Plant Sciences, New Mexico State University, Las Cruces, NM 88003, USA)

  • Robert Steiner

    (Department of Economics, Applied Statistics & International Business, New Mexico State University, Las Cruces, NM 88003, USA)

  • Mohammed Omer

    (Department of Extension Plant Sciences, New Mexico State University, Las Cruces, NM 88003, USA)

Abstract

Reducing tillage has become necessary in irrigated, arid cropping systems in southwestern USA, to address soil degradation and erosion problems associated with intensive soil tillage. A study was conducted in arid southwestern USA, to compare a reduced tillage method (strip tillage) to two conventional tillage methods (plow tillage and raised bed tillage) for irrigated upland cotton ( Gossypium hirsutum ) production. Strip tillage (ST) was established in a single pass by a strip tillage equipment, while the plow tillage (PT) consisted of plowing, disking the soil twice, subsoiling and harrowing. The raised bed tillage (BT) consisted of all the tillage operations under PT method, with an additional tillage event to shape the beds. Crop and soil parameters were assessed during the growing seasons. Soil physical and biological measurements were assessed at the beginning of the trial before planting, and at the end of each cropping season. Results show no significant differences in cotton yield and fiber quality parameters under the tillage systems tested. Out of the soil physical measurements assessed, the cone index (CI) significantly differed with tillage systems during the mid-season assessments, with BT generally having better CI than ST and PT. Other physical measurements were not significant with tillage, but significantly declined over time irrespective of tillage treatments. Out of the soil biological measurements assessed, the total fungal biomass and the arbuscular mycorrhizae fungi biomass were significant with tillage, with ST and BT having higher measurements than PT. In contrast to soil physical measurements that declined, most of the soil biological measurements improved over time. Comparing some soil biological measurements at the beginning to the end of the trial across the tillage treatments, the total microbial biomass increased from 714 to 3565 ng/g, the total bacterial biomass increased from 321 to 1478 ng/g, and the total fungal biomass increased from 84 to 436 ng/g. This study shows that ST can perform adequately for sustainable cotton production in an irrigated arid region of United States.

Suggested Citation

  • Omololu John Idowu & Sifat Sultana & Murali Darapuneni & Leslie Beck & Robert Steiner & Mohammed Omer, 2020. "Tillage Effects on Cotton Performance and Soil Quality in an Irrigated Arid Cropping System," Agriculture, MDPI, vol. 10(11), pages 1-14, November.
  • Handle: RePEc:gam:jagris:v:10:y:2020:i:11:p:531-:d:440820
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    References listed on IDEAS

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    1. Sara Marinari & Emanuele Radicetti & Verdiana Petroselli & Mohamed Allam & Roberto Mancinelli, 2022. "Microbial Indices to Assess Soil Health under Different Tillage and Fertilization in Potato ( Solanum tuberosum L.) Crop," Agriculture, MDPI, vol. 12(3), pages 1-12, March.
    2. Mohamed Allam & Emanuele Radicetti & Valentina Quintarelli & Verdiana Petroselli & Sara Marinari & Roberto Mancinelli, 2022. "Influence of Organic and Mineral Fertilizers on Soil Organic Carbon and Crop Productivity under Different Tillage Systems: A Meta-Analysis," Agriculture, MDPI, vol. 12(4), pages 1-19, March.

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