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2017 - 201912020 - 20212
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Author: Kavita × Start date: 2017 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Enhancing water use efficiency of Barley (Hordeum vulgare L.) through the use of smart agrochemicals
    (CCSHAU, Hisar, 2021-09) Kavita; Amarjeet
    The present investigation entitled “Enhancing water use efficiency of Barley (Hordeum vulgare L.) through the use of smart agrochemicals” was carried out at Regional Research Station, Bawal, Rewari of CCS Haryana Agricultural University, Hisar (Haryana) during Rabi 2019-20. The objectives of the investigation were to study the effect of smart agrochemicals on growth, yield and water use efficiency of barley under different irrigation regimes and to work out economics of different treatments. Barley (Hordeum vulgare L.) is the fourth most important cereal crop in world following wheat, rice and maize. The experiment was carried on barley variety BH 393 in split plot design with three levels of irrigation in main plot and six treatments of smart agrochemicals in sub-plots and replicated thrice. The main plot treatments were no irrigation (I0), one irrigation at tillering (I1) and two irrigation at tillering and heading stage (I2) and; treatments used in subplot were control (T1), seed treatment with Tragacanth katira @ 100 g kg-1 seed (T2), soil application of Tragacanth katira @ 5 kg ha-1 (T3), foliar spray of salicylic acid (SA) @ 200 ppm at booting and grain formation stage (T4), combination of Tragacanth katira @ 2.5 kg ha-1 + foliar spray of SA @ 200 ppm at booting and grain formation stage (T5) and; foliar spray of KNO3 @ 1% at booting and grain formation stage (T6). Results of the experiment revealed that among irrigation levels, one (I1) and two irrigation (I2) and among smart agrochemicals, spray of salicylic acid (T4), potassium nitrate (T6) and combination of Tragacanth katira and salicylic acid (T5) significantly improved growth, physiological, phonological and; quality parameters, yield attributes, yield, economics and water use of crop. I2 (two irrigation) among irrigation levels and T5 (combination of Tragacanth katira @ 2.5 kg ha-1 + foliar spray of SA @ 200 ppm at booting and grain formation) treatment among smart agrochemicals were found most productive (17.17 and 21.8% higher over control, respectively) and economical (net returns-: ₹ 47379 and 48295 ha-1), respectively. Highest water use efficiency i.e., (22.92 and 20.29 kg ha-1mm-1) was achieved with no irrigation (I0) and combination of Tragacanth katira and salicylic acid (T5) among irrigation levels and smart agrochemicals, respectively.
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    ThesisItemOpen Access
    Exploring genetic variation for morphological and biochemical traits in pearl millet [Pennisetum glaucum (L.) R. Br.]
    (CCSHAU, Hisar, 2021-07) Kavita; Ramesh Kumar
    In present investigation, 50 pearl millet genotypes were evaluated in randomized block design with two replications at experimental field of Bajra section, CCS HAU, Hisar during kharif (Rainy) 2020. Analysis of variance showed that mean sum of squares due to genotypes were highly significant for all the characters studied, indicated the presence of sufficient genetic variability. Higher estimates of PCV than corresponding GCV, thereby, revealing that there is slight influence of environment on different traits. Estimates of GCV, PCV, heritability and genetic advance as a percentage of mean were high for the traits viz., grain Ca content, grain yield/plant, dry fodder yield/plant, number of productive tillers/plant, grain Mg content revealed importance of additive gene action and these traits could be exploited through simple recurrent selection procedure. Grain yield was significantly and positively correlated with dry fodder yield/plant, plant height, 1000-seed weight and panicle length suggests that direct selection of these characters will be effective for improvement of grain yield in future breeding programmes. Grain Ca and Mg content exhibited negative and non-significant correlation coefficient with grain yield/plant indicates that grain minerals can be improved without compromising on grain yield/plant. Higher magnitude of correlation coefficients between Ca and Mg content, suggest that both these traits can be simultaneously improved. The path coefficient analysis showed the maximum positive direct effect on grain yield by dry fodder yield/plant followed by plant height, panicle length, panicle diameter and grain Ca content. Therefore, in order to increase grain yield, effective selection can be accomplished for the characters having high direct effects. The germplasm lines viz., HMC-94-2, GP-69, GP-80, GP-70 and HMC-283 with high grain yield/plant (>30g) along with moderately high grain Ca (>160 mg/kg) and Mg (>1600 mg/kg) content were identified in present study. These high yielding germplasm lines with moderately high level of minerals confirm the possibility of simultaneous improvement of both type of characters in pearl millet.
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    ThesisItemOpen Access
    Effect of different tillage and weed management practices on wheat yield and soil properties
    (CCSHAU, 2017) Kavita; Dahiya, D.S.
    An ongoing field experiment established in 2012 at Agronomy Research Farm, CCS Haryana Agricultural University, Hisar, India was selected to study “Effect of different tillage and weed management practices on wheat yield and soil properties”. The experiment was laid out with three different tillage (zero tillage, FIRBS and conventional tillage) and four weed management practices (W1: Atrazine (50% W.P.) @ 750 g/ha in maize and pinoxaden 50g/ha + premix of metsulfuron and carfentrazone (Ally Express 50% DF) 25g/ha + 0.2 % NIS as post-emergence in wheat, W2: Tembotrione (Laudis 42% Sc @ 120 g/ha + S 1000ml/ha (10-15 DAS / 2-4 leaf stage) in maize and clodinafop 60 g/ha + metsulfuron 4 g/ha as post- emergence in wheat, W3: Two HW in maize (20 to 40 DAS) and wheat (30 to 50 DAS), W4: Weedy check in maize and wheat) at two different depth (0-5 & 5-15 cm) were replicated thrice in spilt plot design. Plant and soil samples for analysis were collected after 4 cycle of maize-wheat cropping system in the month of April, 2016 after the harvesting of wheat crop. A significant higher yield reported under FIRBS (66.1 qha-1) method of tillage as compared to other tillage practices. pH and EC reported higher under conventional tillage under different tillage and weed management practices. SOC (0.896%), N (100.57 kg ha-1), P (32.61 kg ha-1), S (18.21 kg ha-1), HA-C (0.352%) and FA-C (0.239%) reported higher under zero tillage due to more retention of crop residue on surface. However, a reverse trend was obtained in case of available K. Values of Zn, Fe and Cu was also recorded higher under zero tillage while value of Mn reported higher under conventional tillage. Most of the nutrients values reported higher at upper depth (0-5 cm) and under weedy check treatment. DOC followed reverse trend as compared to other parameters and higher values reported under conventional tillage. Highest values of MBC (336.02 mg kg-1) was noticed under zero tillage and at 0-5 cm depth. All enzymes (Dehydrogenase, alkaline phosphatase and urease) activities reported higher under ZT. Dehydrogenase and urease activity reported higher at upper depth (0-5cm) while activity of alkaline was higher at lower depth (5-15 cm). At the end of season weed management practices showed non-significant effect on MBC and all enzymes. Bulk density of soil reported higher under CT as compared to other tillage practices.