Influence of Crop Establishment Methods and Weed
Management Practices on Nutrient Uptake of Transplanted Rice
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Author:C. Sangeetha and A. Velayutham
p-ISSN:0024-9602, e-ISSN:2582-5321, Vol:101, Issue:oct-dec
DOI: https://doi.org/10.29321/MAJ.10.001208
Abstract
Field experiments were conducted in clay loam soil in the wet land farm of Tamil Nadu
Agricultural University, Coimbatore during rabi, 2011-12 and 2012-13 to evaluate the different
crop establishment methods and weed management practices in lowland transplanted rice.
The experiments were laid out in strip plot design with three replications. The treatments
consisted of three crop establishment methods as horizontal strips and six weed
management practices as vertical strips. The results of the study revealed that mechanical
transplanting (30 x 20 cm) with conoweeding four times at 10 days interval, starting from 10
DAT had recorded better root characteristics such as root length, volume and dry weight
attributing to higher nutrient uptake by rice resulting in higher grain and straw yield. This
practice was comparable with mechanical transplanting (30 x 20 cm) with preemergence
application of pretilachlor @ 0.75kg a.i. ha-1 + early post emergence of bispyribac sodium @
20g a.i. ha -1 + conoweeding at 40 DAT.
Key words : Machine planting, Nutrient uptake, Root dry weight, Grain and straw yield