Title: Soil temperature, growth and yield of maize (<i>Zea mays</i>L.) as affected by wheat straw mulch
Abstract: Abstract Maize crop is grown mostly in tropical/subtropical environments where drought adversely affects its production. A field experiment was conducted on sandy loam soil for four years (1999 – 2002) to study the effect of wheat straw mulch (0 and 6 t ha−1) and planting methods (flat and channel) on maize sown on different dates. Maximum soil temperature without mulch ranged from 32.2 – 44.4°C in channel and 31.6 – 46.4°C in flat planting method. Mulching, however, lowered soil temperature by 0.8 – 7.0°C in channel and 0 – 9.8°C in flat planting. Mulching, on an average, improved leaf area index by 0.42, plant height by 14 cm, grain yield by 0.24 t ha−1 and biomass by 1.57 t ha−1, respectively. Mulching improved grain yield only in flat sowing. Interaction between sowing date and planting method was significant. Seasonal variation in biomass were significantly correlated (p = 0.05) with mean air temperature during 0 – 45 days after planting (DAP) (r = −0.95), pan evaporation during 0 – 15 DAP (r = 0.79) and negative correlation with rainfall in entire cropping season (r = −0.89), whereas biomass increase with mulch in different cropping seasons had negative relation (r = −0.74) with amount of rain during 0 – 15 DAP.
Publication Year: 2007
Publication Date: 2007-02-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 12
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