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2000 - 2009232010 - 201639
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Subject: Agronomy × End date: 2016 × Start date: 2000 × Type: Thesis ×
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Now showing 1 - 9 of 62
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    ThesisItemOpen Access
    Productivity and Quality of Turmeric (Curcuma Longa L.) As Influenced By Method of Planting and Spacing
    (College of Agriculture, Punjab Agricultural University, Ludhiana, 2005) Kumar Malik, Akshay; Saini, SS
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    ThesisItemOpen Access
    Performance of sunflower adn spring grounnut in an intercropping system as influenced by Planting patterns fertilizer use and irrigation levels
    (Department of Agronomy, College of Agriculture PAU, Ludhiana, 2001) Chakravarty, Sumit; Dhingra, K. K
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    ThesisItemOpen Access
    competitive ability of wheat (Triticum aestivum L.) with phalaris minor Retz. And broad leaf weeds in relation tc rate and method of nitrogen application
    (Department of Agronomy, College of Agriculture PAU, Ludhiana, 2001) Kaur, Amandeep; Walia, U. S
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    ThesisItemOpen Access
    EFFECT OF NITROGEN ON GROWTH, YIELD AND QUALITY OF INDIAN MUSTARD (Brassica juncea L.) GENOTYPES
    (2013) Parminder Kumar
    The field experiment entitled “Effect of nitrogen on growth, yield and quality of Indian mustard (Brassica juncea L.) genotypes” was conducted at Punjab Agricultural University Ludhiana (30o 56/ N latitude and 75o 48/ E longitude and at an altitude of 247 metres above mean sea level), during rabi 2011-12 on loamy sand, neutral in reaction, low in available N, rich in available P and K soil. The study was conducted in split plot design in three replications with four doses of nitrogen (0, 50, 100 and 150 kg/ha) in the main plots and five genotypes (RLC 1, RLC 11, RLC 12, PBR 210 and PBR 91) in the sub plots. Application of N significantly increased plant height, dry matter accumulation (DMA), leaf area index (LAI), photosynthetically active radiation (PAR) interception and chlorophyll content up to 100 kg/ha though such an increase, except plant height continued upto 150 kg/ha of N. Nitrogen application delayed initiation of flowering and significantly increased number of the secondary branches and siliquae per plant and, seeds per siliqua over control. Seed yield increased by 65.7 and 12.0 per cent with 100 kg/ha of N over control and 50 kg/ha of N, respectively. There was consistent reduction in seed oil content and significant increase in oil yield with N application of 50 kg/ha over control. Nitrogen, protein and linoleic acid content increased with increase in N levels. Among genotypes, PBR 91 and PBR 210 exhibited significantly better growth in terms of plant height, DMA and LAI with higher PAR as compared to RLC 11 and RLC 12. Genotypes, PBR 91, PBR 210 and RLC 1 took significantly more number of days for completion of flowering than other genotypes. RLC 12 produced significant higher number of primary and secondary branches per plant, RLC 11 produced higher number of seeds per siliqua. Genotypes PBR 91, RLC 1 and PBR 210 registered significantly higher 1000-seed weight than RLC 11 and RLC 12. Differences in seed yield among genotypes were non-significant. Genotype RLC 11 registered significantly higher oil content but lowest seed protein content. Genotype RLC 12 contained significantly higher seed protein content than rest of the genotypes. Genotypes PBR 91, RLC 11 and PBR 210 produced similar but significantly higher oil yields than RLC 1. Erucic acid content was significantly lower in RLC 1 and RLC 12 while glucosinolate content was lowest in RLC 11 followed by RLC 12. Nitrogen application increased the seed yield up to 100 kg/ha in RLC 1 and RLC 12 and up to 150 kg/ha in RLC 11, PBR 210 and PBR 91. Increase in seed yield with 50 kg/ha of applied N over control was significant in all genotypes whereas further increase in N to 100 kg/ha increased the seed yield significantly in case of RLC 11, RLC 12 and PBR 210. Keywords: Indian mustard, nitrogen, genotypes, dose, growth, yield, quality, N uptake
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    ThesisItemRestricted
    PERFORMANCE OF DIRECT SEEDED RICE (Oryza sativa L.) IN RELATION TO ESTABLISHMENT METHODS, PLANT DENSITIES AND HERBICIDES
    (PAU Ludhiana, 2012) Simerjeet Kaur; Surjit Singh
    The investigation entitled “Performance of direct seeded rice (Oryza sativa L.) in relation to establishment methods, plant densities and herbicides” was conducted at Students’ Research Farm, Department of Agronomy, Punjab Agricultural University, Ludhiana during kharif 2009 and 2010. The soil was loamy sand, normal in soil reaction & electrical conductivity, low in organic carbon &available nitrogen and medium in available phosphorus & potassium. Three experiments were sown on 6th June 2009 and 4th June 2010. Experiment I was laid out in Split Plot Design with 4 replications comprising 5 crop establishment methods {direct seeding with Zero Till Drill, Modified Drill, Conventional Drill, puddled broadcasted and puddled transplanted} in main plots and 4 weed control methods {pendimethalin 0.75 kg ha-1 pre-em. alone and integrated with bispyribac 0.025 kg & azimsulfuron 0.02 kg ha-1 at 30 DAS/T and weed free} in sub-plots. Experiment II and III were laid out in Randomised Block Design with 3 replications. Experiment II contained 16 combinations of 4 seed rates {20 kg, 30 kg, 40 kg and 50 kg ha-1} and 4 row spacings {15, 20, 25 and 30 cm}. Experiment III comprised 16 weed control treatments of pendimethalin 0.75 kg, butachlor 1.50 kg, thiobencarb 1.50 kg, anilofos 0.375 kg, pretilachlor 0.75 kg, oxadiargyl 0.09 kg and pyrazosulfuron ethyl 0.015 kg ha-1 as pre-em. alone and integrated with bispyribac 0.025 kg ha-1 at 30 DAS; two hand weedings and unweeded control. The results revealed that growth parameters, yield attributes and grain yield did not vary significantly among establishment methods, seed rates and row spacings. The effect of establishment methods on sheath blight incidence & severity, stem borer & leaf folder damage, root density, weed population & dry matter and residues of post-emergence herbicides were non-significant. In Experiment I, the maximum grain yield (71.06 q and 62.77 q ha-1) was recorded in weedfree treatment which was at par with integrated use of pendimethalin 0.75 kg ha-1 with bispyribac 0.025 kg or azimsulfuron 0.02 kg ha-1 during 2009 and 2010, respectively. In Experiment III, the maximum grain yield (59.96 q and 52.88 q ha-1) of direct seeded rice was recorded in two hand weedings treatment which was at par with integrated herbicidal treatments containing pendimethalin 0.75 kg ha-1 (59.09 q and 52.10 q ha-1), butachlor 1.50 kg ha-1 (53.05 q and 51.36 q ha-1), thiobencarb 1.50 kg ha-1 (54.16 q ha-1 and 51.65 q ha-1) and oxadiargyl 0.09 kg ha-1 (54.86 q and 49.59 q ha-1) with bispyribac 0.025 kg ha-1 during 2009 and 2010, respectively. Different herbicides used were safe to soil microbial population.
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    ThesisItemRestricted
    DELINEATION OF CADMIUM CONTAMINATED SOILS AROUND BUDDAH NALLAH (LUDHIANA) AND REMEDIAL MEASURES OF AFFECTED SOILS
    (PAU Ludhiana, 2011) Dharamvir Singh Kambo; MPS., KHURANA
    Cadmium is potentially toxic metal and is highly carcinogenic that enters the food chain from the soil through crop uptake resulting from various anthropogenic activities. The surface sewage irrigated soils collected laterally around Buddah Nullah irrespective of the sites had DTPA extractable cadmium 5.2 times more than the adjoining tube well irrigated soils. Considering the threshold value of 3 mg Cd kg-1 soil, about 11.3 per cent soils have crossed this limit and needs cleanup operation. However management option to rehabilitate such soils depends on pools of Cd responsible for phyto-toxicity and use of amendments able to influence these pools. A screen house experiment was conducted to assess the effect of (0, 2.5, 5 10, 20 and 40 mg Cd kg-1 soil) and CaCO3 (2.5 and 5%), FYM (1 and 2 %) and Phosphorous (20 and 40 P2O5 mg kg-1 soil) on the growth of pigweed on soil having DTPA-Cd 0.36 mg kg-1 soil. Dry matter yields decreased as a consequence of phytotoxic effect of Cd emanating from increased availability of Cd in soils and plants. The rate at which significant declined occurred was 10 mg kg-1. However application of different amendments viz (Calcium carbonate, FYM, Phosphorus) exhibited variable behavior as far as their remediation potential was concerned. Application of CaCO3, FYM and phosphorous at their highest rate reduced DTPA- Cd by 52.6 percent, 37.1 percent and 45.1 percent respectively. Consequently maximum enhancement in dry matter yields was observed with application of 5% CaCO3 among other amendments. The upper critical toxic level in soil and shoots of pig weed was found to be 4.38 mg kg-1 soil and 14.6 μg g-1 dry matter respectively. The interaction of Cd with Zn and Fe was found to be rate dependent. Cu and Mn in both shoots and roots was negatively correlated to the added Cd. All the fractions of Cd in soils increased significantly with cadmium application. Amendments decreased the EX+WS fraction, the maximum depressing effect observed with 5% CaCO3 because of concomitant increase in CARB fraction. FYM application decreased the CARB fraction where as it encouraged both OM-Cd and oxide bound fractions. Phosphorus application was effective in transforming Cd in to oxide bound fractions with little influence on carbonate and organic fractions.
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    ThesisItemOpen Access
    Agronomic Management Of Transplanted Winter Maize ( Zea Mays L.) For Higher Productivity
    (Punjab Agricultural University ;Ludhiana, 2005) Harmeet Singh; Jagrup Singh
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    ThesisItemOpen Access
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    ThesisItemRestricted
    Performance And Nitrogen Requirement Of Wheat In Different Cropping Systems
    (Punjab Agricultural University; Ludhiana, 2006) Trakroo, Chaman Lal; Dalip Singh