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Theses

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2010 - 20119
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Subject: Agronomy × End date: 2011 × Start date: 2010 ×
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Now showing 1 - 9 of 9
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    ThesisItemOpen Access
    Bio-Efficacy and residue studies of herbicides in soybean-wheat cropping system
    (CSKHPKV, Palampur, 2011) Navell Chander; Kumar, Suresh
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    ThesisItemOpen Access
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    ThesisItemOpen Access
    Effect of integrated nutrient management on seed yield, quality and storage life of soybean
    (CSKHPKV, Palampur, 2011) Rana,Rachna; Badiyala, Dinesh
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    ThesisItemOpen Access
    Resource conservation through planting techniques in maize-wheat cropping system
    (CSKHPKV, Palampur, 2011) Ramesh; Rana, S.S.
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    ThesisItemOpen Access
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    ThesisItemOpen Access
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    ThesisItemOpen Access
    Integrated weed management in Indian mustard [Brassica juncea]
    (CSKHPKV, Palampur, 2010) Ashwani Kumar; Kumar, Suresh
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    ThesisItemOpen Access
    STUDIES ON NITROGEN ECONOMY IN NAPIER BAJRA HYBRID (Pennisetum purpureum x Pennisetum americanum ) THROUGH BIOFERTILIZERS UNDER MID HILL CONDITIONS OF HIMACHAL PRADESH
    (CSK Himachal Pradesh Krishi Vishavavidyalaya, Palampur, 2010) KUMAR, ASHWANI; Kumar, Naveen
    long term field experiment “Studies on nitrogen economy in Napier bajra hybrid (Pennisetum purpureum x Pennisetum americanum) through biofertilizers under mid hill conditions of Himachal Pradesh” at Research Farm of Fodder section, Department of Crop Improvement, CSK, Himachal Pradesh Krishi Vishvavidyalaya, Palampur under study since Kharif 2006 was maintained during Kharif 2009. Soil of the experimental site was silty clay loam in texture, acidic in reaction, medium in organic carbon, low in available nitrogen, medium in available phosphorus and high in available potassium. The experiment was laid out in factorial randomized block design with three replications, consisting of ten treatments i.e. three biofertilizer viz. Azospirillum, Azotobacter and Azospirillum + Azotobacter and three levels of nitrogen i.e. 25, 50 and 75 per cent of recommended nitrogen with one control i.e. 100 per cent of recommended nitrogen (90 kg ha-1). Plant height, number of shoots m-2, leaf: stem, green and dry fodder yields increased significantly with increasing levels of nitrogen upto 75 per cent of recommended nitrogen. Significantly highest green fodder (379.1 q ha-1) & dry fodder (79.8 q ha-1) yields and net return (Rs. 26372) were produced with 75 per cent of recommended nitrogen. This nitrogen level also resulted in significantly highest crude protein (7.83 q ha-1) and crude fibre (21.10 q ha-1) yields. Shoot number m-2, green fodder (335.0 q ha-1), dry fodder (68.5 q ha-1), crude protein (6.61 q ha-1) and crude fibre (18.28 q ha-1) yields were significantly higher with the application of Azospirillum + Azotobacter. Available soil nitrogen, phosphorus and potassium were increased significantly upto 75 per cent of recommended nitrogen. Organic carbon and available K were significantly higher with Azospirillum. Azospirillum + Azotobacter resulted in significantly highest net return (Rs. 23729) and B: C (2.43). Application of 75 per cent of recommended nitrogen with Azospirillum + Azotobacter proved superior from green fodder and dry fodder yields point of view. With respect to dry fodder yield the nitrogen response was obtained upto 75 per cent of recommended nitrogen with Azospirillum and Azospirillum + Azotobacter; however, with Azotobacter the response was obtained up to 50 per cent of recommended nitrogen.
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    ThesisItemOpen Access
    BIO-EFFICACY AND RESIDUE STUDIES OF HERBICIDES IN SOYBEAN-WHEAT CROPPING SYSTEM
    (CSK Himachal Pradesh Krishi Vishavavidyalaya, Palampur, 2011) CHANDER, NAVELL; Kumar, Suresh
    ABSTRACT The field experiment was conducted at Palampur during kharif 2009 to Rabi 2010-11 to find out an effective weed control schedule in soybean-wheat cropping system. Eight weed control treatments viz. pendimethalin 1500 g ha-1 (pre), imazethapyr 200 g ha-1 (pre), quizalofop ethyl 60 g ha-1 (early post), imazethapyr 75 g ha-1 (pre) fb. imazethapyr 75 g ha-1 (early post), quizalofop ethyl 50 g ha-1 + chlorimuron ethyl 4 g ha-1 (early post), pendimethalin 1500 g ha-1 (pre) fb. chlorimuron ethyl 4 g ha-1 (early post), hand weeding (twice) and unweeded check in soybean as main plot factors and unweeded check, isoproturon 1000 g ha-1 + 2,4-D 500 g ha-1 and isoproturon 750 g ha-1 + 2,4-D 500 g ha-1 in wheat as subplot factors were tested in split plot design with three replications. The soil of the test site was acidic in reaction (pH-5.6), silty clay loam in texture and medium in available nitrogen (284.8 kg ha-1), phosphorus (14.6 kg ha-1) and potassium (268.0 kg ha-1). Among treatments applied in soybean, pendimethalin 1500 g ha-1 (pre) fb. chlorimuron ethyl 4 g ha-1 (early post) effectively managed weeds (Commelina, Echinochloa, Digitaria, Ageratum, Cyperus sp.) with an average weed control efficiency of 61.1 per cent and resulted in higher yield attributes viz. branches per plant, pods per plant and 1000-seed weight, seed yield (18.7 and 18.3 q ha-1) and seed quality (41.1 and 15.0 per cent higher oil and protein content than weedy check). In wheat, both isoproturon 1000 g ha-1 + 2,4-D 500 g ha-1 and isoproturon 750 g ha-1 + 2,4-D 500 g ha-1 were comparable in controlling weeds (Phalaris, Avena, Lolium, Vicia and Coronopus) and increasing yield attributes, yields (38.2 and 35.1 q ha-1) and protein content (14.3 and 13.1 per cent). None of the herbicides applied in soybean had any residual effect on wheat crop as well as on the test crop(s) studied in laboratory. Economic studies on system basis revealed that pendimethalin 1500 g ha-1 (pre) fb. chlorimuron ethyl 4 g ha-1 (early post) resulted in Rs.85096 and Rs.85165 net returns and Rs.1.88 and Rs.1.88 net returns per rupee invested during 2009-10 and 2010-11, respectively. ------