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2017 - 20192
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Subject: Agronomy × Author: Sarita Rani × Start date: 1999 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Integrated nutrient management for pearl millet-wheat cropping system under saline conditions
    (CCSHAU, 2019) Sarita Rani; Satyavan
    The present investigation entitled “Integrated nutrient management for pearl millet-wheat cropping system under saline conditions” was conducted at Research Farm of Department of Soil Science, CCS Haryana Agricultural University, Hisar during kharif and rabi seasons of 2016-17 and 2017-18 with the objective to find out the effect of various INM treatments on growth, yield attributes and yield, soil properties and microbial count of pearl millet-wheat cropping system under saline conditions. The experiment consisting of 12 different treatments i.e T1: Control, T2: 75% RDF, T3: RDF, T4: 125% RDF, T5: 75% RDF+BGS+ST-3, T6: RDF+BGS+ST-3, T7: 75% RDF+VC+ST-3, T8: RDF+VC+ST-3, T9: 75% RDF+FYM+Biomix, T10: RDF+FYM+Biomix, T11: 75% RDF+VC+Biomix and T12: RDF+VC+Biomix was laid out in randomized block design with three replications. Both the crops were irrigated with saline water of ECiw 7.5-8.0 dS/m. Plant height, dry matter accumulation, growth indices, yield attributing traits and yield were significantly superior in both the crops in T10 treatment than T1 and T3 treatments. Maximum grain yield, stover yield and biological yield of pearl millet (35.4, 93.2 and 128.6 q/ha) were achieved by T10 treatment, which showed increase of 13.5%, 7.88% and 9.35%, respectively over the RDF (T3). The same treatment (T10) out yielded the wheat yield among all treatments during both the rabi seasons and recorded 12.14%, 9.21% and 10.38% higher grain, straw and biological yield over RDF (T3) treatment, respectively. The T10 treatment exhibited highest NPK content and uptake in both the crops during both the seasons, which was followed by T12 (RDF+VC+Biomix), T8 (RDF+VC+ST-3) and T6 (RDF+BGS+ST-3) treatments, respectively. The soil EC and pH were decreased by the FYM, VC and BGS applied treatments when compared with control (untreated) under saline conditions. These organic manures improved available nitrogen, phosphorus and potassium of soils than the control and sole RDF receiving plots. Soil microbial count including Azotobacter, Azospirillum and PSB viable cell count were improved by the application of organic manures and Biomix or Azotobacter chroococcum (ST-3) than the control and sole RDF treatments. The findings of the experiment revealed that the use FYM, VC and BGS along with chemical fertilizers (75% RDF and RDF) and seed treatment with single strain of Azotobacter chroococcum (ST-3) or with Biomix (triple strains of Azotobacter+Azospirillum+PSB) were effectively improved the crop growth and yields of pearl millet-wheat cropping system irrigated with saline water.
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    ThesisItemOpen Access
    Response of wheat (Triticum aestivum L.) varieties to metribuzin based herbicide mixtures
    (CCSHAU, 2017) Sarita Rani; Suresh Kumar
    The field study was carried out during 2014-15 and 2015-16 at Research Farm of Department of Agronomy, CCS HAU, Hisar. The experiment was conducted in split-plot design keeping three replications with the treatments consisting of five wheat varieties (WH 1105, HD 2967, DPW 621-50, WH 1124 and DBW 17) in main plots and six weed management practices viz, metribuzin (210 g ha-1), metribuzin + fenoxaprop (150 + 100 g ha-1), metribuzin + pinoxaden (150 + 40 g ha-1) metribuzin + clodinafop (150 + 45 g ha-1), weed free and weedy check in sub plots. The wheat varieties did not affect the weed density and weed dry matter accumulation. Variety WH 1105 resulted in maximum growth and yield parameters, except plant height and 1000-grain weight, producing maximum grain, straw and biological yield resulting into maximum net returns and B:C ratio, which was at par with HD 2967 and DPW 621-50, but statistically better than DBW 17 and WH 1124. Among the herbicides, minimum density of grassy and total weeds and dry matter accumulation by them at all stages at and after 60 DAS was observed with metribuzin + fenoxaprop, being at par with other two combinations of metribuzin, whereas, density and dry matter of broad leaf weeds minimum with metribuzin alone (210 g ha-1). Maximum gross returns of wheat crop were found with weed free, however, maximum net returns and B: C ratio of wheat were obtained in metribuzin + fenoxaprop followed by metribuzin + pinoxaden and metribuzin + clodinafop. Any of the herbicide treatment did not exhibit serious phytotoxicity to wheat crop as well as residual toxicity to fodder maize.