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The experiment to investigate the impact of Zn and B on yield of some rice cultivars was carried out during 2013 to 2015 at the experimental field of Shaheed Benazir Bhutto Rice Research Institute (previously RRI) Dokri, Larkana. Five rice varieties (IR6, IR8, DR92, DR83 and Shahkar) were selected for the purpose. B at 5 Kgha-1 as Boric Acid (H3BO3) in addition to Zn at 15 Kgha-1 as Zinc Sulphate di-hydrate (ZnSO4.2H2O) along with recommended doses of nitrogen as Urea CO(NH2)2; phosphorus as DAP (NH4)2HPO4 were applied in each plot with treatments viz. control (N+P); T1 (N+P+Zn) and T2 (N+P+Zn+B). Yield (tons ha-1 ) of paddy rice was calculated as total paddy weight Kg/plot /15X10000/1000. Data statistically was analyzed using SPSS software version 17. Differential insignificant (P<0.05) response by cultivars was found over application of control (nitrogen and phosphorus only) whereas application of both Zn and B in joint venture with recommended doses of N and P paddy yield of cultivars increased significantly (P<0.05) by 44.83 to 60.29 percent. The harvest years irrespective of varieties showed no significant impact, whereas varieties were found to be important factor that showed differential responses upon yield, might be due to parental inheritance impact upon all fertilizer applications in each harvest year. Application of recommended doses of N and P along with B and Zn at 5.0 and 15 Kgha-1 , respectively boosted the profitability by increasing yield quantum of paddy rice.

According to estimates, by 2025 around seven hundred sixty million tons of rice shall be the regular food stuff for hungry world. Contrary to the future needs, rice production is about thirty five percent less than the actual requirement. [...]there is pressing need to increase the total areas of cultivation of yielding varieties of rice. At 135Kg N, 90Kg P, 10Kg Zn and 2 Kg B per hectare Fertilizer treatment were calculated for each plot and applied as (Control) C: 390.2 g Urea as N + 281g of DAP as P; (Treatment 1)T1: 390.2 g Urea as N + 281g of dAp as P + 150g ZnSO4 as Zn ; (Treatment 2) T2= 390.2 g Urea as N + 281g of DAP as P + 150g ZnSO4 as Zn + 17g Boric acid as B. For nursery bed, all DAP (168.75 g) was applied as basal dose before broadcasting seed and Urea 233 g was applied into two equal split doses - 116.5 g with DAP and remaining 116.5 g when tillers reached to length of 3 cm. Concentration of zinc and activity of copper/zinc-superoxide dismutase in leaves of rye and wheat cultivars differing in sensitivity to zinc deficiency.

Postharvest processes determine the quality whether the edible portion of produce may contain sufficient level of essential mineral nutrients or may have not been contaminated by excess concentration incorporated by tools commonly used in the fields and storage sites while drying and storages. Flame atomic absorption spectrophotometer Model FS-220 coupled with graphite tube atomizer and vapor generation assay with deuterium correction background were used for the analysis of the samples. Effect of zinc and copper application on the yield and micronutrient content of wheat (Triticum aestivum L.). Comparison of closed-vessel and focused open-vessel microwave dissolution for determination of cadmium, copper, lead, and selenium in wheat, wheat products, corn bran, and rice flour by transverse-heated graphite furnace atomic absorption spectrometry.

ABSTRACT The trials were conducted during autumn sugarcane sowing season (August-September) for two consecutive years (2014-15, and 2015-16) to screen out the most promising sugarcane lines in a three replicated RCBD (Factorial). Eight sugarcane lines Th-1201, Th-1205, Th-1206, Th-1208, Th-1210, Th-1211, Th-1223, and Th-1238 were tested, and their overall performance concerning cane yield, and sugar content related traits was compared with commercial check Th-10. The results revealed that cane yield was significantly highest (P<0.05) in new variety Th-1201 (213.92 t ha-1), followed by varieties Th-1238 (195.23 t ha-1), Th-10 (195.23 t ha-1), Th-1205 (193.54 t ha-1), Th-1211 (178.26 t ha-1), Th-1208 (143.46 t ha-1), Th-1206 (136.67 t ha-1), Th-1223 (115.44 t ha-1). New promising variety Th-1201 surpassed commercial check-in cane yield, while varieties Th-1238 and Th-1205 were at par with the commercial check (Th-10) for cane yield ha-1. In case of CCS, it was significantly higher in sugarcane variety Th-1210 (14.45 t ha-1) as compared to varieties Th-1201 (14.31 t ha-1), Th-1206 (13.90 t ha-1), Th-10 (13.73 t ha-1), Th-1238 (13.40 t ha-1), and Th-1223 (13.38 t ha-1). In CCS, the varieties Th-1210, Th-1201, and Th-1206 exceeded commercial check (Th-10), while the rest of the varieties were slightly inferior in CCS to commercial check.