Browsing by Author "Kumar, Ajay (Dr.)"

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    ThesisItemOpen Access
    EVALUATION OF SEED VIGOUR TESTS TO PREDICT THE FIELD EMERGENCE POTENTIAL OF FINGER MILLET AND BARNYARD MILLET VARIETIES
    (College of Forestry, Ranichauri Campus, V.C.S.G. Uttarakhand University of Horticulture and Forestry, 2021-01) RAWAT, ABHA; Kumar, Ajay (Dr.)
    Vigour is one of the important characteristic of seed quality. No vigour test is likely to perform best to all crops. The vigour test should be crop specific and very little information is available about the vigour test for finger millet and barnyard millet. The experiments on vigour tests viz., physical, physiological and biochemical tests were conducted in CRD (Complete Randomized Design) with four replication. There was six treatments consist of six varieties, three each of finger millet (PRM-1, PRM-2 and VL-352) and barnyard millet (PRB-903, VL-207 and PRJ-1). All vigour test experiments procedure was followed as per standard guidelines. The field experiment consist of six treatment (T1 PRM-1, T2 PRM-2, T3 VL-352, T4 PRB-903, T5 VL-207 and T6 PRJ-1) was laid out in the RBD (Randomized Block Design) with four replication. The field emergence, seedling establishment and field emergence index was recorded during the field experiment. The data were analyzed statistically to find out the result of the study in laboratory and field conditions. Finger millet variety PRM-2 and PRB-903 of barnyard millet were recorded significantly higher test weight, seed density, first count, final count, standard germination, seedling shoot length, seedling root length, total seedling length, seedling fresh weight, seedling dry weight, seedling vigour index I, seedling vigour index II, speed of germination, relative growth index, paper piercing test, cool germination test, mean daily germination, radical emergence, accelerated ageing test and electrical conductivity than VL-352 of finger millet and VL-207 of barnyard millet. Similarly, in field study PRM-2 and PRB-903 were recorded significantly higher field emergence, seedling establishment and field emergence index. The field emergence was correlated with different vigour test viz. test weight, final count, standard germination, seedling vigour index I and relative growth index in both finger millet and barnyard millet. The highly positive and significant correlation was found in test weight(r= 0.859** in finger millet and r= 0.807** in barnyard millet) and seedling vigour index I (r= 0.990** in finger millet and r= 0.999** in barnyard millet) with field emergence. On the basis of the study it could be concluded that PRM-2 of finger millet and PRB-903 of barnyard millet were more vigorous. The seedling vigour index I and test weight could be considered to predicting the field emergence of finger millet and barnyard millet.
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    ThesisItemOpen Access
    Response of wheat (Triticum aestivum L.) to foliar application of nano-nitrogen.
    (College of Forestry, Ranichauri Campus, V.C.S.G. Uttarakhand University of Horticulture and Forestry, 2022) Uniyal, Suchita; Kumar, Ajay (Dr.)
    The world’s one-third population is dependent on wheat Triticum aestivum L. for their food requirement. It contains higher protein than the other major grains. The indiscriminate use of fertilizers (Urea, D.A.P and M.O.P) are resulting in nutritional imbalances in soil, environmental hazards and a rise in production costs. Conventional nitrogenous fertilizers, can be lost or rendered inaccessible to plants by processes such as leaching, NH3 volatilization, denitrification, immobilization, and fixing in the soil solids as NH4-N which results 30-40 % fertilizer use efficiency. Therefore, to increase the nitrogenous fertilizer use efficiency and reduction of their ill effects there is need to use nano-nitrogen. Therefore, to access the response of wheat to foliar application of nano-nitrogen, the field and lab experiments were planned. The treatments comprised of T1- RDN (60:30:20 kg/ha), T2- 75 % RDN, T3- 50 % RDN, T4- RDN + nN (T), T5- RDN + nN (F), T6- RDN + nN (T+F), T7- 75 % RDN + nN (T), T8- 75 % RDN + nN (F), T9- 75 % RDN + nN (T+F), T10- 50 % RDN + nN (T), T11- 50 % RDN + nN (F), T12- 50 % RDN + nN (T+F), T13- nN (T), T14- nN (F), T15- nN (T+F), were evaluated in randomized complete block design with two replications at REC, Gaja during the rabi season 2020-2021. The seed quality parameters of harvested wheat seed were accessed in lab in complete randomized design with four replications. The significantly higher plant growth parameters and seed yield were recorded in 75 % RDN + nN (T) (2ml/litre water) than the RDN (60 kg). The treatment 75 % RDN + nN (T) and 75 % RDN + nN (T+F) gave 26 % and 11 % more grain yield, respectively as compared to the RDN. The maximum B:C ratio (2.9: 1) was also registered with 75 % RDN + nN (T). The seed quality attributes like germination percentage, seedling fresh weight, seedling dry weight, vigour index I and II, speed of germination, germination percentage in cold test and water sensitivity test were recorded significantly higher in 75 % RDN + nN (T+F) than the RDN. Based on the present experiment, 75 % of RDN (60 kg) + nN (T) @ 2ml/litre water might be beneficial for higher seed yield and quality of wheat under rainfed condition of mid hills of Uttarakhand.