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Subject: Agronomy × End date: 2009 × Start date: 2000 × Thesis Type: M.Sc ×
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Now showing 1 - 4 of 4
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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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    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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    Synthesis And Validation Of A Brassica Crop Growth Simulation Model Under Variable Water Environments
    (Punjab Agricultural University ;Ludhiana, 2004) Prabhjyot Kaur; Hundal, S.S.
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    ThesisItemOpen Access
    Effect of seed rates and nitrogen levels in relation to crop residue management on microenvironment and productivity of bed planted soybean-wheat system
    (Punjab Agricultural University, Ludhiana, 2008) Sabha Jeet
    A field trial was conducted on soybean (var. SL 525)- wheat (var. PBW-343) in a system at Punjab Agricultural University, Ludhiana during kharif and rabi season of 2006-07 on loamy sand soil consisting of 12 treatment combinations arranged in split plot design replicated three times with three bed plantings [Fresh beds (FB), Permanent beds (PB) and Alternate beds (FB/PB)] in main plots, two crop residue management [Residue incorporation/mulching (R) and No incorporation/No mulching (Ro) and two seed rates/nitrogen levels [75 kg ha-1 (S100) and 93.75 kg ha-1 (S125)/ 90 kg N ha-1 (N90) and 120 kg N ha-1 (N120)] in sub plots. In soybean, treatment R tended to record lower soil temperature 29.5°C at 7.30 am and 38.4°C at 2.30 pm, significantly higher PARI (%) at all growth stages except at 30 DAS, significantly higher DMA at all stages of plant growth except 30 DAS, higher LAI, higher root density, significantly higher no. of pods/plant (92.6 pods/plant) than R0. Recommended seed rate ( S100) recorded significantly higher soil temperature, higher canopy temperature, significantly lower PARI (%), significantly lower DMA except at 30 DAS, lower LAI, significantly higher number of nodules (29.1) and dry weight of nodules (129.7 mg), more root density at 0-15 cm soil depth, significantly more number of pods/ plant than S125 treatment. FB produced similar yields with PB and FB/PB in both crops. Higher seed yield (22.6 q ha-1) of soybean was obtained in FB/PB which was statistically on par with the yield obtained in PB (21.4 q ha-1) and FB (21.2 q ha-1). Treatment R produced significantly higher seed yield of soybean (22.6 q ha-1) than R0 (20.8 q ha-1). Higher seed yield (22.3 q ha-1) of soybean was recorded under S125 treatments than (21.1 q ha-1) in S100. In wheat, soil temperature tended to record higher under PB (16.9°C at 7.30 am and 25.8°C at 2.30 pm), R0 (16.7°C at 7.30 am and 25.7°C at 2.30 pm) and N90 than FB, FB/PB, R and N120. Canopy temperature was also higher under PB, R0 and N90 than FB, FB/PB, R and N120 but differences where on par statistically except 120 DAS where N¬90 tended to record significantly higher canopy temperature than N120. PARI (%) was found to be non significant in all treatments and at all stages of crop growth except at 30 DAS where FB tended to record significantly higher PARI (%) than PB. Plant height, DMA, LAI, effective tillers, number of grains per ear of wheat tended to be higher under FB, R and N120 treatments than PB, FB/PB, R0 and N90. Higher grain yield (41.4 q ha-1) of wheat was tended to record in FB than FB/PB (41.1 q ha-1) and PB (40.6 q ha-1). R treatment recorded higher grain yield (41.1 q ha-1 ) than R0 (40.9 q ha-1). Treatment N120 tended to recorded higher grain yield (41.2 q ha-1) than N¬90 (40.8 q ha-1). Protein content in grain was higher under FB (11.4 %), R (11.3 %) and N120 (11.5 %) than PB (11.2 %), FB/PB (10.9 %) and N90 (10.8 %). Available N and organic carbon status of soil also increased at end of experiment than the initial status. The higher value of penetration resistance was recorded under PB, R0 and S125/N90 treatments than FB, FB/PB and S100/N120 treatments. Infiltration rate tended to higher under FB/PB, PB and R than FB, R0 and at both nitrogen levels.