A field experiment was carried out at the wetland of Tamil Nadu Agricultural University, Coimbatore during Navarai (Dec - Jan) season 2010–11 to investigate the effect of foliar nutrition on growth, yield attributes and yield of rice. The experiment was laid out in a randomized block design with twelve treatments replicated thrice. The results revealed that combined application of organic and inorganic sources with foliar spray had enhanced effect on growth and yield of rice crop over application of chemical fertilizers or organic sources alone. Among the nutrient management treatments, the plant height, dry matter production, number of tillers, yield attributes and yield of grain (5631 kg ha-1) and straw (7647 kg ha-1) were the highest with recommended integrated nutrient management (INM) practice +2% urea phosphate spray at panicle initiation and 10 days later. However the yield was comparable with recommended INM practice + 2% DAP spray at panicle initiation and 10 days later and recommended INM practice + 1% urea phosphate spray at panicle initiation and 10 days later.
Pot culture and field experiments were carried out at the Common Effluent Treatment Plant (CETP), Dindigul during kharif 2011-12 to investigate the influence of irrigation of treated tannery effluent along with domestic wastewater on growth, yield attributes and yield of cotton. The pot culture was in a factorial completely randomized design and field experiment laid out in factorial randomized block design with four replications. The results revealed that the mixing proportion of 25% Treated Tannery Effluent (TTE)+75% domestic wastewater (DWW) application recorded taller plants, higher dry matter production, number of sympodial branches plant(-1), number of fruiting points plant(-1), number of bolls plant(-1) and seed cotton yield with yield reduction of 15.28 and 16.11% compared to normal water irrigation under pot culture and field experiment, respectively. Regarding amendments, gypsum application registered higher seed cotton yield followed by VAM.
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