A field experiment to study the “Comparative efficiency of organics and biofertilizers on growth and yield of maize (Zea mays L.)” was conducted during Kharif 2011 at farmer field in Beluguli village, Chikkanayakanahalli taluk (Tumkur district). The maize cultivar Nithyashree (NAH 2049) was used in the study. The field experiment was laid out in Randomized Complete Block Design with fourteen treatments and three replications. Results of the treatment (T13) having recommended dose of NPK + Azotobacter chroococcum + Bacillus megaterium + Pseudomonas fluorescence + enriched compost has showed highest plant height at 30, 60, 90 days after sowing and at harvest (120 days) (31.70, 180.93, 186.07 and 188.13 cm respectively). The highest total dry matter production at harvest (375.80 g) and yield parameters like Weight of cob (207.63 g), Grain yield per plant (158.93 g), Grain yield per ha (54.53 q) and Test weight of seeds (33.10 g) was also found highest in this treatment and available nutrient content in soil after crop harvest i.e., nitrogen (185.40 Kg ha-1), phosphorous (38.83 Kg ha-1) and potassium (181.47 Kg ha-1) was also found highest in the same treatment combination.

4000 m away as check area. The results showed that the microbial population i.e., bacteria and fungi was influenced by the cement dust deposition. The minimum population of bacteria 27.1 and 26.9 x 10 5 CFU g -1 was recorded before sowing and after harvest of crop at 250 m and population increased to 87.1 and 89.1 x 10 5 CFU g -1 with increase in distance up to 2000 m distance from cement industry. Similar trend was observed in case of fungal population also. Minimum population of 10.4 and 9.3 x 10 3 CFU g -1 was recorded before sowing and after harvest of crop at 250 m from cement industry and population increased to 26.1 and 25.5 x 10 3 CFU g -1 with increase in distance up to 2000 m from cement industry.

A field experiment was conducted to know the Growth and dry matter as influenced beneficial microorganisms on Soybean (Glycine max (L.) Merrill) under field conditions in farmer field at Gouribidanurduring kharif 2012. The experiment was laid out randomized completely block design with twelve treatments and three replication. The results of this treatment having application of 100 % NPK + Bradyrhizobium + Aspergillusniger + VAM (T11) recorded highest growth parameter like branches at 30, 60 days after sowing and at harvest (4.84, 7.79 and 9.76 cm respectively), leaf area at 30, 60 days after sowing and at harvest (537.41, 999.57 and 1211.94 cm2respectively), Leaf area duration at 30, 60 days after sowing and at harvest (26.99, 73.13 and 30.60 days respectively) and total dry matter at 30, 60 days after sowing and at harvest (3.36, 27.23 and 32.73 g plant-1 respectively)compare to treatment having control. The finding of this study was combined application of biofertlizersgives higher growth parameter and total dry matter of soybean under field condition.

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Nutritional survey carried out in different grape growing regions of the country have revealed that the grape growers are applying as high as 600 to 800 kg each of N, P 2 O 5 and K 2 O per ha every year accounting for 30 to 40% of an annual occurring costs. Nutrients influence yield and quality of grapes through vine growth. A systematic investigation was conducted on soil fertility status of the low and high yielding vineyards in Bijapur taluk. Sixty vineyards were surveyed. Out of 60, 30 vineyards were selected based on previous year yield data for the purpose of collecting soil and petiole samples. The vineyards which produced less than 10 tonnes per acre and those which produced more than 10 tonnes per acre were categorized as low yielding and high yielding vineyards, respectively. All the soils belong to clay in texture. The pH of soils was alkaline in reaction (8.19 to 8.50). The soils were non saline. The organic carbon content of the soils ranged from medium to high. The CEC of the soil ranged from 49.45 to 55.05 and 50.03 to 57.75 coml. (p+) kg-1. The available nitrogen content of the soils ranged from 161.90 to 212.21 and 193.50 to 233.47 kg ha-1. The available phosphorus content in the soils ranged from 18.64 to 31.42 and 22.45 to 34.50 kg ha-1. The available potassium content of the soil ranged from 432.64 to 472.81 and 430.64 to 543.39 kg ha-1 in the low and high yielding vineyards, respectively.