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标题：Evaluating Non-Aromatic Rice Varieties for Growth and Yield under Different Rates of Soil Applied Boron
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作者：Javaid Ahmed Shah ; Nazia Rais ; Zia-ul-Hassan 等
期刊名称：Pakistan Journal of Analytical & Environmental Chemistry
印刷版ISSN：1996-918X
电子版ISSN：2221-5255
出版年度：2016
卷号：17
期号：1
页码：1-7
DOI：10.21743/pjaec/2016.06.001
语种：English
出版社：National Centre of Excellence in Analytical Chemsitry
摘要：Balanced boron (B) fertilization has prime importance to obtain maximum paddy yield. The range between B deficiency and toxicity is smaller than most plant nutrients,though B requirement among different crops varies widely. The adequate dose of B for one genotype can either be insufficient or toxic to other. Hence,without knowing the actual requirements of crop varieties,B application can be risky due to the toxicity hazards. A field experiment was undertaken at experimental farm of Nuclear Institute of Agriculture (NIA),Tandojam during 2013,to evaluate the B requirement of two non-aromatic rice varieties. The experiment was arranged in split plot design with three repeats. Two rice varieties Sarshar and Shandar were grown in main plots with four rates of B: 0.5,1.0,1.5 and 2.0 kg ha-1 and control (0 kg ha-1 ) in sub plots. Both the varieties responded differently to B rates. Sarshar produced the highest paddy yield (5691 kg ha-1 ) at a rate of 1.5 kg B ha-1 and was 18% greater than control,Shandar produced the highest yield (6075 kg ha-1 ) at a rate of 1.0 kg B ha-1 and was 5% greater than control. B accumulation in paddy and straw of both varieties increased with the increasing B rates. Both varieties were also significantly (p<0.05) varied in B accumulations. Comparatively,rice variety Sarshar accumulated 9% and 22% more B in straw and paddy than the Shandar. Thus,the B requirement of Sarshar was relatively higher than the Shandar. Shandar can be grown without the additional B application,whereas,Sarshar requires additional B for its maximum harvest in B deficient soils..
关键词：Boron rates;Non-aromatic;Rice cultivars