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ThesisItem Open 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. KThesisItem Open Access Comparative effect of different herbicides at their differetn concentrations on weed control in grounnut (Archis Hypogaea L.)(Punjab Agricultural University, Ludhiana, 1970) Brar, Lall Singh; Gill, GurtakashThesisItem Restricted PERFORMANCE OF DIRECT SEEDED RICE (Oryza sativa L.) IN RELATION TO ESTABLISHMENT METHODS, PLANT DENSITIES AND HERBICIDES(PAU Ludhiana, 2012) Simerjeet Kaur; Surjit SinghThe 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.ThesisItem Open Access Agronomic Management Of Transplanted Winter Maize ( Zea Mays L.) For Higher Productivity(Punjab Agricultural University ;Ludhiana, 2005) Harmeet Singh; Jagrup SinghThesisItem Open Access Studies On Seed Rate , Irrigation , Weed Control And Their Interactive Effects In Bed Planted Soybean ( Glycine Max ( L. ) Merrill(Punjab Agricultural University ;Ludhiana, 2003) Mandeep Kaur; Mahey , R. K.ThesisItem Restricted Performance And Nitrogen Requirement Of Wheat In Different Cropping Systems(Punjab Agricultural University; Ludhiana, 2006) Trakroo, Chaman Lal; Dalip SinghThesisItem Open Access Influence Of Rice Residue Management And Planting Techniques On Herbicidal Efficiency In Relation To Wheat (Triticum Aestivum L.) Productivity(Punjab Agricultural University; Ludhiana, 2006) Singh, Amandeep; Walia, U. S.ThesisItem Open Access Studies On The Biology And Control Of Red Sprangletop [ Leptochloa Chinensis ( L.) Nees ] In Transplanted Rice(Punjab Agricultural University; Ludhiana, 2005) Charanjit Singh; Mehra, Sat PaulThesisItem Restricted Studies On Combined Performance Of Herbicides, Mulching And Date Of Planting In Mentha Species(Punjab Agricultural University ;Ludhiana, 2003) Singh, Manoj Kumar; Saini, S. S.
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