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Subject: Soil Science and Agricultural Chemistry ×

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Now showing 1 - 9 of 80
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    ThesisItemOpen Access
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    ThesisItemOpen Access
    ASSESSMENT OF IMPORTANT PHYSICAL AND CHEMICAL PROPERTIES OF VERTISOLS USING MID-INFRARED SPECTROSCOPIC TECHNIQUE
    (Indira Gandhi Krishi Vishwavidyalaya Raipur, 2016) Sahu, Shashikant; Tedia, K.
    The investigation entitled “Assessment of important physical and chemical properties of Vertisols using middle infrared spectroscopic technique” was carried out at ICAR-Indian Institute of Soil Science, Bhopal (M.P.) during 2015-2016. This study has analyzed the potential of MIR spectroscopy in prediction of soil properties on 100 soil samples from various sites distributed around Bhopal district. MIR prediction models for soil organic carbon, and other soil fertility properties (such as soil extractable nutrients, pH, exchangeable acidity and soil texture) were developed using Random Forests (RF) regression and the current study has added total element concentration data to the residuals of the MIRS predictions to test how they can improve the MIR prediction accuracies. In this study fourteen soil properties consist of sand, silt, clay, soil pH, EC, OC, Water content at FC and PWP, total and available N, P, K were analyzed for developing prediction models using spectral data collected from MIR- spectroscopy. Two regression models namely partial least square (PLS) and random forest (RF) were also assessed of which, RF emerged out to be the best for predicting the soil properties and it was able to predict some selected parameters with reasonable higher accuracy. Further, it was concluded that MIR spectroscopy can be used successfully for assessment of soil quality because, of the ease of assessment and the instrumental rapidity for handling large number of samples at a time.
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    ThesisItemOpen Access
    CROP RESPONSE BASED ASSESSMENT OF NUTRIENT DEFICIENCIES IN VERTISOL AND INSEPTISOL OF BEMETARA DISTRICT OF CG.
    (Indirra Gandhi Krishi Vishwavidyalaya Raipur, 2016) Sahu, Neha; Mishra, V.N.
    A pot culture experiment was conducted in the green house of the Department of Soil Science and Agricultural Chemistry, College of Agriculture, IGKV, Raipur during kharif season 2015 to study the “crop response based assessment of nutrient deficiencies in Vertisol and Inceptisol of Bemetara district of Chhattisgarh" using two representative soils (Vertisol and Inceptisol) collected from village Bargaon (Vertisol) and Deori (Inceptisol) of the Berala block. The objectives of the study were to identify the specific nutrients which limit the crop yield through rice -response using nutrient omission technique during kharif season, 2015 and to demonstrate the optimum use of identified limiting nutrients and it’s comparison with farmer’s fertilizer practice with wheat crop during rabi season. 2015-16. The treatments constituted with application of all nutrients applied at optimum level known as SSNM dose while in others, one of the nutrient elements from all the nutrient treatments was omitted. Total 11 treatments were tested with rice (MTU-1010) as a test crop, laid out in CRD (Completely Randomized Block Design) with three replications. The experimental soils under study were texturally classed under clayey (Vertisol) and clay loam (Inceptisol). The soil reaction (pH) of the Vertisol was at 7.6 and that of Inceptisol exhibited 6.6. Both the soils had low in organic C, available N and S, low to medium in available P, high status in available K, exchangeable Ca and Mg. The micronutrient status of the soils were above critical level specially high status in Fe, Mn, Ca, and Mg level except B and Cu in Vertisol. The S status in both the soils were near marginal. Grain and straw yields of rice in both the soils were significantly reduced with the omission of N P, and S in comparison to the treatment receiving all the nutrients. The yield reductions were more pronounced with N and P omission as 54.76 and 44.73 %, respectively in Vertisol and 42.10 and 29.97 %, respectively in Inceptisol . The per cent reduction in rice yields were also recorded in Vertisol for S -11.63 %, Zn - 8.99 % and B - 6.51% whereas, in case of Inceptisol, S omitted treatments caused grain yield reductions by 13.60 % from the treatment that received all nutrients (SSNM). Straw yields of rice in both the soils performed identically with those of grain yields performance. Grain and straw yields were also supported with the similar growth performance with respect to effective tillers, number of filled grains per panicle in both the soil type under study. With respect to N, P, K uptake by rice in both the soils under study, indicated an identical performance with dry matter production (grain and straw yields) as the nutrient uptake is the multiple of content and grain and straw yields. Like grain yield performance, N, P and K uptake also affected severely with N, followed by P and S omission treatments. The effect on other treatments, no remarkable variations were observed except Zn and B omitted treatments in case of Vertisol. Ca, Mg and S uptake by rice in both the soils, were also found in the similar trends. Highest Ca Mg and S uptake in Vertisol were recorded in the treatment receiving all nutrients as 280, 169 and 76 mg/pot, respectively and that in Inceptisol as 296, 170 and 85 mg/pot, respectively and statistically at par with those of other treatments except N, P and S omitted treatments. Like other major and secondary nutrients, similar trends in micronutrients uptake were also recorded. Significantly lower uptakes were recorded in the treatments associated with N, P and S omitted treatments. The highest Fe, Mn, Zn, Cu and B uptake by rice in Vertisol were recorded in the treatment associated with Mn omitted treatment which were statistically at par with those of all other treatments except N, P and S omitted treatments. The highest Fe, Mn, Zn, Cu and B uptake by rice in Vertisol were recorded as 8.25, 11.58, 1.81, 0.36 and 0.51 mg/pot, respectively. Similarly, in case of Inceptisol, highest Fe, Mn, Zn, Cu and B uptake by rice were as 9.60, 13.49, 2.05, 0.42, and 0.52 mg/pot respectively in the treatment associated with B omitted pot except N P and S omitted treatments. Based on the performance of rice crop during Kharif season, the yield limiting nutrients in Vertisol were identified in the order of N > P > S > Zn > B whereas that in Inceptisol, the limiting nutrients were in the order of N > P > S. These limiting nutrients were tested on farmer's fields with wheat crop during rabi season, 2015-16, where bulk soil samples were collected for pot culture study. The limiting nutrients applied in optimum doses (SSNM) in Vertisol as N - 150, P2O5 - 100, K2O - 80, S - 45, B - 3 and Zn – 7.5 kg/ha. and that in Inceptisol as N - 150, P2O5 - 100, K2O - 80, S - 45 kg/ha. Yields performance of wheat were compared with farmer's practice dose (FPD) applied at the rate of 80:58:38 (N:P2O5:K2O) kg/ha. The wheat grain yields were higher in SSNM dose applied based on the yield limiting nutrients in both the soil (Vertisol and Inceptisol) as compared to that of farmer's practice dose. The percent yield increased with the application of SSNM dose over FPD in both the soils were in the range of 27-29 %. This result confirms that application of identified limiting nutrients as N, P, S, Zn and B in Vertisols and N, P and S nutrients in Inceptisols should be applied as per the recommended dose for optimum crop production of the target district under study.
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    ThesisItemOpen Access
    EFFECT OF GRADED DOSE OF FLY ASH APPLIED WITH AND WITHOUT FYM ON RICE PRODUCTIVITY, MICROBIAL AND ENZYMATIC ACTIVITY OF SOIL
    (Indirra Gandhi Krishi Vishwavidyalaya Raipur, 2016) Singh, Meshwar Pratap; Tedia, K.
    The present investigation entitled “Effect of graded dose of fly ash applied with and without FYM onrice productivity, microbial and enzymatic activity of soil” was carried out during kharif season of 2015-16 at Gaitara village, Tilda block, Raipur District (C.G.). The field experiment was laid out in Randomized block design with three replications and eight treatments namely control, GRD (100:60:40), 75% GRD + 20 t fly ash ha-1, 75% GRD + 40 t fly ash ha-1, 75% GRD + 60 t fly ash ha-1, 75% GRD + 20 t fly ash ha-1 + 5 t FYM ha-1, 75% GRD + 40 t fly ash ha-1 + 5 t FYM ha-1, and 75% GRD + 60 t fly ash ha-1 + 5 t FYM ha-1. Rice variety “MTU 1010” was transplanted on 2 August, 2015 with row spacing of 15 × 10 cm. The soil of the experiment washaving normal pH, low in nitrogen, phosphorus and medium in potassium. Results revealed that increased soil microbial and enzymatic activities was observed by the application of graded dose of fly ash with and without FYM. Graded doses of fly ash was integrated with 75 % of recommended fertilizers and 5 t ha-1 FYM imprinted positive effect on crop yield and trended to improve soil fertility status as compared GRD. The highest grain and straw yield was recorded by application of 75% GRD + 40 t fly ash ha-1 + 5 t FYM ha-1, (T7) treatment.
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    ThesisItemOpen Access
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    ThesisItemOpen Access
    AVAILABILITY OF PHOSPHORUS TO WHEAT CROP UNDER DIFFERENT ORGANIC-INORGANIC COMBINATIONS ON VERTISOLS OF CHHATTISGARH PLAINS
    (INDIRA GANDHI KRISHI VISHWAVIDAYALAYA, RAIPUR, 2001) Bonde, Atul Shaligram; Bachkaiya, K.K.
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    ThesisItemOpen Access
    “EVALUATION OF SOIL FERTILITY STATUS IN THE VERTISOL OF BALODA BLOCK IN JANJGIR DISTRICT OF CHHATTISGARH”
    (Indira Gandhi Krishi Vishwavidyalya, Raipur, 2010) Singh, Kalyan; Sahu, K.K.
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    ThesisItemOpen Access
    DISTRIBUTION OF MAJOR AND MICRO NUTRIENTS IN Alfisol OF DHAMTARI (BLOCK AND DISTRICT) OF CHHATTISGARH
    (Indira Gandhi Krishi Vishwavidyalya, Raipur, 2010) Reena, Kumari; Tiwari, Alok
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    ThesisItemOpen Access
    SOIL FERTILITY STATUS OF AN INCEPTISOL OF AKALTARA BLOCK IN JANJGIR DISTRICT OF CHHATTISGARH
    (Indira Gandhi Krishi Vishwavidyalya, Raipur, 2010) Chandrakar, Kunal; Shrivastava, L.K.