Dragon fruit (Hylocereus undatus (Haworth) Britton & Rose) is promisingly a new and exotic crop, India has great potential for its cultivation in semiarid tracts. It can be propagated either sexually or asexually by stem cuttings. The sexually propagated seedlings will take 3 or more years for bearing than that of propagated through stem cuttings. The rootings in cuttings of some species occurs without exogenous auxins treatment, but majority do not root easily. An investigation was carried out to study the effect of IBA, NAA and their combinations on rootings in stem cuttings of Dragon fruit at the Department of Horticulture, BBAU, Lucknow during the year 2019-20, in order to standardize the type and concentration of growth regulators for rooting and success rate in stem cuttings. The experiment was laid out by following randomized block design with nine treatments and three replications. The stem cuttings of Dragon fruit treated with IBA, NAA and their combinations result reveals that, length of longest root (21.33 cm), average number of roots per cutting (41.76), diameter of the root cutting (1.38 mm), fresh weight of root cutting (2.22 g) and dry weight of root cutting (0.59 g) was recorded maximum in cutting treated with IBA 4000 ppm. This was probably because of simulative actions of exogenous auxin (IBA) in the formation of new root tips in stem cuttings.

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Fourth roots of the natural numbers from 1 to 30 have been calculated by Bisection method inthe interval [0, 3] using stopping tolerance 0f 0.00001. Calculated roots have been comparedwith the actual values of roots to obtain error and percentage error in the calculated roots.Numerical rate of convergence has also been calculated in the determination of each fourthroot. The highest numerical rate of convergence of Bisection method has been observed in thecalculation of fourth root of 2 and is equal to 1.754385964912. The lowest numerical rate ofconvergence of Bisection method has been observed in the calculation of fourth roots of 1, 3,4-8, 10, 12 and is equal to 1.333333333333. Average error, average percentage error and averagenumerical rate of convergence of Bisection method have been found to be 0.000000062635,0.000003048055 and 1.458082183940 respectively

The quality of strawberry is highly hampered by improper crop management, which can only be solved by using different types of mulches. It is very rare in literature, where the different types of mulches are used for the quality assessment. To carry out this new strategy to sustain the quality of strawberry the present study was carried out using various kind of mulches viz., white polythene mulch, yellow polythene mulch, black polythene much, green polythene mulch, news-paper mulch, wood husk mulch, serpat grass mulch, red polythene mulch, jute bag mulch comprised of 10 treatments and 3 replications under the randomized block design. The findings revealed that the application of black plastic mulch significantly increased the total number of fruit (12.67), length of fruit (6.21 cm), width of fruit (4.20 cm), weight of fruit (16.30 g), yield plant-1 (200.10g), yield plot-1 (3.20kg), total soluble solids (11.85%), total sugar (8.58%), reducing sugar (7.90%), non-reducing sugar (1.75%) and vitamin C (45.91 mg 100g-1). It is pertinent to infer that the application of the mulches (either black or yellow) performed and better over control.