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Research Article Open access CC BY 4.0

Maize Response to Leguminous Biomass Composted with Phosphate Rocks in the Northern Zone of Tanzania

Mawazo Shitindi, Kokoasse Kpomblekou-A, Wendell H. McElhenney, Ramble Ankumah, Johnson Semoka, Mateete Bekunda, Conrad Bonsi

Journal of Experimental Agriculture International · pp. 1–15 · Published 2 May 2019

10.9734/jeai/2019/v35i430209

Abstract

A study was conducted to evaluate maize response to leguminous biomass composted with phosphate rocks (PRs) in a split plot design. Field experiments were conducted at Wang’waray Farmers Training Center (F.T.C) located in Babati District of Manyara region in the Northern zone of Tanzania between December 2013 and June 2015. Three leguminous (Crotalaria juncea, Lablab purpureus and Mucuna pruriens) strips were cultivated in 2013/14 to produce a biomass which was harvested at flowering to early podding stage and air dried.  Air-dry biomass was composted with PRs from Minjingu (medium reactive PR) and Panda Hill (low reactive PR). Maize response to different treatments was evaluated across the field strips in 2014/15 season. The strips previously used to produce leguminous biomass were used as main plots and each strip was divided into seven subplots receiving different treatments at random. A medium term maize variety SC. 627 was used as a test crop. Average maize grain yields obtained from Crotalaria, Lablab and Mucuna strips reached 5.3, 4.5 and 4.0 t ha-1, respectively and were statistically different (P=.05). Application of Minjingu or Panda Hill PR alone didn’t increase maize grain yield above the control while Minjingu PR applied with urea or composted with biomass increased maize grain yield by 2.40 and 1.58 t ha-1, respectively above the control. Application of Panda Hill PR with urea or composted with biomass increased grain yield by 1.20 and 1.06 t ha-1, respectively above the control. The observed differences (0.82 and 0.14 t ha-1) were not statistically significant indicating that biomass composted with PR was as effective as the PR applied with urea.

Crotaralia Lablab Mucuna phosphate rocks compost maize yield

References (6)

  1. 1 EFFECT OF ORGANIC ACIDS ON RELEASE OF PHOSPHORUS FROM PHOSPHATE ROCKS1 [DOI]
  2. 2 Land-use change affects phosphorus fractions in highly weathered tropical soils [DOI]
  3. 3 The dietary importance of maize in Katumba ward, Rungwe district, Tanzania, and its contribution to household food security [DOI]
  4. 4 Total Carbon, Organic Carbon, and Organic Matter [DOI]
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  6. 6 Soil Fertility Management in Africa: A Review of Selected Research Trials [DOI]

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