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Tree nutrition and productivity changes in mahogany (Swietenia macrophylla King) based agrisilvicultural system in the humid tropics.

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Title: Tree nutrition and productivity changes in mahogany (Swietenia macrophylla King) based agrisilvicultural system in the humid tropics.
Authors: Kumar, Vikas1,2 (AUTHOR) vkskumar49@gmail.com, Kunhamu, T. K.3 (AUTHOR), Tiwari, Anjali4 (AUTHOR) anjalitiwari2807@gmail.com
Source: Agroforestry Systems. Mar2025, Vol. 99 Issue 3, p1-15. 15p.
Subject Terms: *Potassium fertilizers, *Catch crops, *Mahogany, *Intercropping, *Production quantity, *Tree growth
Abstract: This study examined the effects of different fertilizer levels on mahogany tree growth and intercrop yield productivity in a six-year-old plantation in Mala, Kerala, India, established in 2009 with a 2.5 × 2.5 m spacing. The trial was laid out in a split plot design in June 2014, with fertilizer levels as main plots and intercrops as subplots in three replications. The trial was repeated for two consecutive years (2014–2016). The various N, P, K fertilizer combinations applied were F1- 0:0:0; F2- 50:25:25; F3- 100:50:50 and F4- 150:75:75 kg ha−1 yr−1 N, P2O5 and K2O. Tree growth in terms of height, diameter, basal area, and volume, showed a significant increase with rising fertilizer levels. The highest volume production was recorded under the highest fertilizer regimes (F4) (105.28 m3 ha−1) which was approximately 135 per cent higher than the unfertilized control plot (F1: 44.84 m3 ha−1). This clearly indicates that nutrient supplementation at younger ages can markedly increase tree productivity in mahogany. Yet another observation was observed complementarity between mahogany trees and herbaceous intercrops. The positive influence of fertilizer on the tree growth was also reflected in the intercrop yield. The yield reduction in mahogany intercropped plots was compensated by tree fertilization. In summary, this study highlights the rationale for fertilization at younger stages of mahogany growth, which may be desirable for enhancing combined productivity in intercropped scenarios. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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An: 183073240
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  Label: Title
  Group: Ti
  Data: Tree nutrition and productivity changes in mahogany (Swietenia macrophylla King) based agrisilvicultural system in the humid tropics.
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  Data: <searchLink fieldCode="AR" term="%22Kumar%2C+Vikas%22">Kumar, Vikas</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> vkskumar49@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Kunhamu%2C+T%2E+K%2E%22">Kunhamu, T. K.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tiwari%2C+Anjali%22">Tiwari, Anjali</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> anjalitiwari2807@gmail.com</i>
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  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Agroforestry+Systems%22">Agroforestry Systems</searchLink>. Mar2025, Vol. 99 Issue 3, p1-15. 15p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Potassium+fertilizers%22">Potassium fertilizers</searchLink><br />*<searchLink fieldCode="DE" term="%22Catch+crops%22">Catch crops</searchLink><br />*<searchLink fieldCode="DE" term="%22Mahogany%22">Mahogany</searchLink><br />*<searchLink fieldCode="DE" term="%22Intercropping%22">Intercropping</searchLink><br />*<searchLink fieldCode="DE" term="%22Production+quantity%22">Production quantity</searchLink><br />*<searchLink fieldCode="DE" term="%22Tree+growth%22">Tree growth</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study examined the effects of different fertilizer levels on mahogany tree growth and intercrop yield productivity in a six-year-old plantation in Mala, Kerala, India, established in 2009 with a 2.5 × 2.5 m spacing. The trial was laid out in a split plot design in June 2014, with fertilizer levels as main plots and intercrops as subplots in three replications. The trial was repeated for two consecutive years (2014–2016). The various N, P, K fertilizer combinations applied were F1- 0:0:0; F2- 50:25:25; F3- 100:50:50 and F4- 150:75:75 kg ha−1 yr−1 N, P2O5 and K2O. Tree growth in terms of height, diameter, basal area, and volume, showed a significant increase with rising fertilizer levels. The highest volume production was recorded under the highest fertilizer regimes (F4) (105.28 m3 ha−1) which was approximately 135 per cent higher than the unfertilized control plot (F1: 44.84 m3 ha−1). This clearly indicates that nutrient supplementation at younger ages can markedly increase tree productivity in mahogany. Yet another observation was observed complementarity between mahogany trees and herbaceous intercrops. The positive influence of fertilizer on the tree growth was also reflected in the intercrop yield. The yield reduction in mahogany intercropped plots was compensated by tree fertilization. In summary, this study highlights the rationale for fertilization at younger stages of mahogany growth, which may be desirable for enhancing combined productivity in intercropped scenarios. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s10457-025-01149-0
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 15
        StartPage: 1
    Subjects:
      – SubjectFull: Potassium fertilizers
        Type: general
      – SubjectFull: Catch crops
        Type: general
      – SubjectFull: Mahogany
        Type: general
      – SubjectFull: Intercropping
        Type: general
      – SubjectFull: Production quantity
        Type: general
      – SubjectFull: Tree growth
        Type: general
    Titles:
      – TitleFull: Tree nutrition and productivity changes in mahogany (Swietenia macrophylla King) based agrisilvicultural system in the humid tropics.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Kumar, Vikas
      – PersonEntity:
          Name:
            NameFull: Kunhamu, T. K.
      – PersonEntity:
          Name:
            NameFull: Tiwari, Anjali
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 03
              Text: Mar2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 01674366
          Numbering:
            – Type: volume
              Value: 99
            – Type: issue
              Value: 3
          Titles:
            – TitleFull: Agroforestry Systems
              Type: main
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