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Subject: Agronomy × End date: 2007 × Start date: 2007 × Thesis Type: Ph.D ×
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    Studies On Rice Productivity As Influenced By Organic Manures And Nitrogen Levels Under Different Tillage Methods And Its Residual Effect On Succeeding Wheat Crop
    (CSK Himachal Pradesh Krishi Vishvavidyalaya;Palampur, 2007) Kuldip Singh; Bassi, K.; CSK Himachal Pradesh Krishi Vishvavidyalaya; Palampur
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    Studies On Integrated Nutrient Management Through Vermicomposting In Direct Seeded Rice-Wheat Sequence
    (CSK Himachal Pradesh Krishi Vishvavidyalaya;Palampur, 2007) Jatinder Kumar; Kalia B.D.; CSK Himachal Pradesh Krishi Vishvavidyalaya; Palampur
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    ThesisItemOpen Access
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    STANDARDIZATION OF DOSES OF NEW HERBICIDES TO MANAGE WEEDS IN SOYBEAN (Glycine max L.)
    (CSK Himachal Pradesh Krishi Vishavavidyalaya, Palampur, 2007) THAKUR, ARVIND SINGH; Kumar, Suresh
    The field experiment entitled, “Standardization of doses of new herbicides to manage weeds in soybean (Glycine max L.)” was conducted at the experimental farm of the Department of Agronomy, Himachal Pradesh Krishi Vishvavidyalaya Palampur during kharif season of 2005. In order to meet out the objectives, 15 treatments were tested in Randomized Block Design (RBD) with three replications. The treatments consisted of pre-emergence application of acetachlor and trifluralin each at 1.0, 1.25 and 1.5 kg ha-1, post-emergence application of haloxyfop methyl 0.075, 0.100 and 0.125 kg ha-1, quizalofop methyl 0.0375, 0.050 and 0.0625 kg ha-1, pre-emergence application of alachlor 1.5 kg ha-1, hand weeding twice (30 and 60 days after sowing) and unweeded check. The soil of the experimental site was acidic in reaction (pH-5.6), silty clay loam in texture, and medium in available nitrogen (284.8), phosphorus (14.6) and potassium (268). Among post-emergence herbicides haloxyfop methyl 0.100 kg ha-1 resulted in highest weed control efficiency which was 72.0 per cent at harvest stage. Whereas, preemergence application of herbicides, acetachlor 1.5 kg ha-1 recorded highest weed control efficiency of 72.3 per cent at harvest. Among different doses of herbicides acetachlor 1.5 kg ha-1 (pre), haloxyfop methyl 0.100 kg ha-1 (post) and quizalofop ethyl 0.0625 kg ha-1 (post) were more effective to control weeds. Haloxyfop methyl 0.100 kg ha-1 and quizalofop ethyl 0.0625 kg ha-1 were most effective to control grassy weeds and only acetachlor control grassy as well as broad leaves weeds. Haloxyfop methyl (post) 0.100 kg and 0.125 kg ha-1, quizalofop ethyl (post) 0.0625 kg, acetachlor (pre) 1.5 kg ha-1 and trifluralin (pre) 1.5 kg ha-1 resulted in significantly higher plant dry weight, higher number of branches per plant, pods per plant, seeds per pod, 1000 seed weight and seed yield of soybean. Haloxyfop methyl 0.100 kg ha- 1 (post) resulted in higher gross returns (Rs 40,300), net returns (Rs, 27,614) and net returns per rupee invested (Rs. 2.17).
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    ThesisItemOpen Access
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    STUDIES ON INTEGRATED NUTRIENT MANAGEMENT THROUGH VERMICOMPOSTING IN DIRECT SEEDED RICE-WHEAT SEQUENCE
    (Department of Agronomy, Forages and Grassland Management, 2007) Kumar, Jatinder; Kalia, B.D.
    ABSTRACT This investigation was carried to find out the suitable level of vermicompost in direct seeded rice-wheat sequence at the experimental farm of Department of Agronomy, CSK HPKV, Palampur during Kharif 2003 and Kharif 2004, Rabi 2003-04 and Rabi 2004-05. Other objectives of the study were to find out the effect of vermicompost with different levels of NPK fertilizers in direct seeded rice-wheat crop sequence and to study the economics of various treatments under investigation. The field experiment consisted of 13 treatment combinations of 4 vermicompost levels viz., no vermicompost, vermicompost @ 2 t/ha, vermicompost @ 4 t/ha and vermicompost @ 6 t/ha and three levels of chemical fertilizers viz., 1/3rd of recommended NPK, 2/3rd of recommended NPK and recommended NPK and one absolute control. These treatments were applied to paddy crop and its residual effect was studied in wheat crop. Wheat crop was raised by applying 50% of recommended N fertilizer. It has been concluded from this investigation that application of vermicompost @ 6 t/ha proved to be sufficient in direct seeded rice-wheat sequence. With the increase in level of vermicompost from no vermicompost to vermicompost @ 6 t/ha, the grain yield of paddy increased from 1766, 1979 kg/ha (1st year, 2nd year) to 2446, 2797 (1st year, 2nd year), respectively with an increase of 27.8, 29.2% over no vermicompost during both the crop seasons. Application of recommended dose of fertilizers resulted in 12.9 and 17.6% increase in grain yield over 1/3rd and 2/3rd recommended NPK levels. Application of vermicompost @ 6 t/ha to paddy crop in direct seeded rice-wheat sequence and application of recommended dose of NPK fertilizer resulted in higher gross and net returns and net returns per rupee invested. Application of 6 t/ha of vermicompost to paddy resulted in significantly higher residual effect on wheat grain yield, straw yield and NPK uptake. Fertilizer levels did not showed any residual effect on grain and straw yield of wheat during both the years of study. Application of 6 t/ha of vermicompost alongwith 2/3rd of recommended NPK was found to be most suitable and a saving of 33% of chemical fertilizers can be obtained.