Boron Deficiency In Rainfed Wheat In Pakistan: Incidence, Spatial Variability And Management Strategies
Citation
Abdul Rashid, Shahid Rafiq, A. U. Bhatti, John Ryan, N Bughio, Sui-Kwong Yau. (6/2/2011). Boron Deficiency In Rainfed Wheat In Pakistan: Incidence, Spatial Variability And Management Strategies. Journal of Plant Nutrition, 34 (4), pp. 600-613.
Abstract
Boron (B) deficiency is potentially an important nutrient constraint in calcareous soils. We determined B deficiency incidence and spatial distribution in rainfed wheat (Triticum aestivum L.) in 1.82 Mha Pothohar plateau in Pakistan, its relationship with soil types, crop responses to B, and internal B requirement and B fertilizer use efficiency of wheat. Plant and soil analyses indicated deficiency in 64% of the 61 sampled fields; geostatistics-aided contour maps delineated B deficient areas. In rainfed field experiments, B use increased wheat yields up to 11%. Fertilizer requirement was 1.2 kg B ha-1; critical B concentration (mg kg-1) ranges were: young whole shoots, 4-6; flag leaves, 5-7. Boron uptake by wheat was 0.14-0.58% of applied dosage, leaving substantial residual impact. Highly cost-effective B use or B-efficient genotype adoption can enhance wheat productivity and grower-income. Such effective nutrient assessment and management approaches can be beneficially adopted elsewhere as well.
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https://hdl.handle.net/20.500.11766/12159Other URI
https://mel.cgiar.org/dspace/limitedCollections
- Agricultural Research Knowledge [12852]
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