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An experiment was conducted for three consecutive years during rabi from 2010-11 to 2012-13 at Floricultural Research Station, Hyderabad to study the influence of integrated nutrient management practices to improve the growth and flower yield of Tuberose cv. Hyderabad Double. The treatments consist of combination of organic fertilizers and bio inoculants along with different levels of NPK (100%, 75% and 50%RDF). Compared to 100 % RDF with FYM alone, application of 75% RDF in integration with farm yard manure (FYM), vermicompos (VC), Azospirillum (AZO) and phosphate solubilizing bacteria(PSB) (T4) has significantly yielded maximum number of spikes per plant (2.33) with increased spike length, rachis length, number of florets per spike and also maximum number of bulbs per plant (32.60). B: C ratio ranged between 2.09 - 2.60 with its maximum exhibited by 75% RDF with FYM, VC, AZO and PSB(T4) followed by 50 % RDF with FYM, VC, AZO and PSB (T7). [ABSTRACT FROM AUTHOR]

An experiment was conducted during rabi seasons of 2005-06 to study the effect of organic manures in soil parameters and yield of cabbage (Brassica olerecia var. capitata) in an acid soil. The study consisted of two sources of organic manure (vermicompost and FYM) and Azospirillum (4 kg ha-1).The highest yield of cabbage was obtained with the application of vermicompost at 3 t/ha and Azospirillum (17.89 t/ha), which show significantly superior over FYM. The post harvest organic carbon and available NPK content of soil significantly improved with the use of vermicompost and Azospirillum. The concentration of nutrient (NPK) in shoot and root of cabbage were higher in the treatment receiving vermicompost 3t/ha along with Azospirillum as compared to FYM treatments. [ABSTRACT FROM AUTHOR]

A field experiment was conducted during 1998-99 and 1999-2000 to study the effect of integrated nutrient management system on the energy use efficiency of four rice based cropping systems. Application of 75 per cent RDF as chemical + 25 per cent as FYM and vermicompost along with or without Azospirillum produced significantly higher grain yield of rice. Rabi rice required more energy input compared to the kharif rice. The mean energy input for the four summer crops were of the order groundnut>cowpea>okra>sesame. Substituting 25 per cent of the recommended dose of chemical nitrogen for rice, with organics and / or biofertilizers increased the comparative energy efficiency of rice based cropping systems. Rice-rice-okra was the most energy efficient crop sequence in the sandy loam soils of Kerala. [ABSTRACT FROM AUTHOR]

Ginger is an important rhizomatous spice is widely cultivated in India. A study was conducted to assess the effect of organic manure and inorganic healizer on yield and quality of ginger. Highest rhizome yield (11.59 t/ha) was recorded with azospirillum alone in comparison to inorganic fertilizers although the differences were non significant. The quality attributes significantly increased by all the organic fertilizer treatments. Maximum dry matter ( 17.7%), oil (2.0%) and oleoresin ( 6.98%) was recorded under the application of azospirillum + phosphorus +wood ash. The lowest dry matter was recorded with phosphorus alone when no biofertilizer was applied in comparison to inorganic fertilizers. [ABSTRACT FROM AUTHOR]

The effect of inoculation of Azospirillum brasilense individually and in combination with different levels of nitrogen on Oryza sativa L. was studied under sand culture condition during autumn season of 2007 in Tripura. The results showed that individual or combined effect of Azospirillum brasilense and nitrogen fertilizer both at high and low levels has significantly increased the in vivo nitrate reductase activity, total protein and chlorophyll content compared to control. These parameters were found enhanced in plants supplemented with nitrogen fertilizers and inoculated with Azospirillum brasilense. [ABSTRACT FROM AUTHOR]

An experiment was conducted during 2005-06 to study the effect of fertilizers, biofertilizers and micronutrients on plant growth, seed yield and quality of brinjal. The results indicated that, application of 100:100*:50 kg NPK per ha + Azospirillum + Phosphate solubilizing bacteria (PSB) each @ 125 g per ha (root dipping) along with zinc sulphate (0.2%) spray recorded significantly higher plant height (89.47 cm), number of branches (32), number of leaves (87), number of fruits (20), fruit yield (27.06 t/ha), number of seeds per fruit (1852), 1000-seed weight (7.90 g), seed yield (633 kg/ha), percentage of germination (97), field emergence (91), seedling vigour index (2024) and seedling dry weight (48.84 mg) over 125:100:50 Kg NPK / ha (RDF) at Dharwad conditions. [ABSTRACT FROM AUTHOR]

The Soil Test Crop Response study (STCR) was conducted for cauliflower under IPNS on Inceptisols (Typic Ustropept) in Coimbatore district of Tamil Nadu. In order to develop a scientific base for prescribing fertilizer recommendations for cauliflower, two field experiments were carried out with sorghum as gradient crop and cauliflower as test crop. From the soil test and crop response data, the basic parameters were computed and the fertilizer prescription equations for recommending fertilizer doses were developed for cauliflower. The fertilizer estimates under IPNS clearly indicated better utilization of added fertilizer nutrients by recording of high response ratio. Since the conjoint application of organics with fertilizers resulted in saving of 35, 25 and 28 kg ha-1 of N, P2O5 and K2O respectively. Further inclusion of bio-fertilizer viz., Azospirillum @ 2 kg ha-1 resulted in the saving of 10 kg ha-1 of fertilizer N. [ABSTRACT FROM AUTHOR]

A field study was conducted to evaluate the crop maturity, productivity, quality and economic returns from banana cv. Rasthali in response to the split application of higher levels of nitrogen and Azospirillum. Application of Azospirillum along with 100g inorganic N (T7) produced higher yield (19.00kg/plant) of better quality fruits with the cost benefit ratio of 2.41 and recorded a minimum of 272 days to shoot. Similarly application of higher level of inorganic N ie., 200 g/plant in four split doses (T6) also increased the yield and quality of banana. [ABSTRACT FROM AUTHOR]

Field experiments were conducted during summer (Feb-June) and rabi (Aug-Dec) seasons of 2004 to study the effect of integrated nutrient management practices on yield characters, economic yield, economics and nutrient uptake of castor (Ricinus communis) under irrigated conditions. Application of FYM @ 12.5 t ha-1+ Azospirillum + phosphobacteria recorded significantly maximum length of primary spike, more number of spikes plant-1, capsules spike-1, seed and oil yield and nutrient uptake as compared to pressmud @ 2 t ha-1+ Azospirillum + phosphobacteria and sugarcane biocompost @ 1 t ha-1. Similarly the maximum length of primary spike, more number of spikes plant-1, capsules spike-1, seed and oil yield and nutrient uptake of castor were recorded with application of 75 % RDF NPK + ZnSO4 @ 12.5 kg ha-1 as basal + ZnSO4 0.25% foliar spray twice at 30 and 45 DAS as compared to other inorganic nutrients. The similar organic and inorganic nutrient treatment proved to be more economical in view of its higher net returns and benefit: cost ratio in both the seasons, summer and rabi. [ABSTRACT FROM AUTHOR]

A field experiment was conducted during rabi season of 2008-2009 to study the effect of vermicompost and biofertilizer on yield and quality of rabi onion. The experiment was laid out in the split-plot design with four replications. There were twenty-four treatment combinations comprising of for levels of vermicompost viz. 5, 10, 15, 20 q ha-1, three treatments of Azotobacter (A1) i.e. seedling dipping (A1S1), seed treatment (A1S2) and soil application (A2S2) and three treatments of Azospirillum (A2) i.e. seedling dipping (A2S1), seed treatment (A2S2) and soil application (A2S3). The data revealed that, among vermicompost application of 20qha-1 recorded significantly higher high fresh weight of bulb (43.04 g), bulb yield (25 1.20 q ha-1), N content (0.918%), TSS (11.07%) and pungency (6.63 mg/l00g) as compared to control. Among the biofertilizer levels, A1S2 recorded significantly maximum bulb yield (23.51 q ha-1) fresh weight of bulb (42.13 q ha-1) TSS (10.06%) and it was on par with A2S2. Among the interactions the treatment, 04A1S2 recorded comparatively maximum fresh eight of bulb (49.14 g) and bulb yield (269.52 q ha-1) followed by O4A2S2, 03A1S2 and 03A2S2 which were at par with each other. [ABSTRACT FROM AUTHOR]