Impact of phytoecdysteroid treatment on the larval performance of multivoltine mulberry silkworm Bombyx mori Linn.

Phytoecdysteroid are being used commercially to shorten the larval duration for synchronize spinning of cocoons and labour saving. In this experiment Achyranthes aspera plant extract containing phytoecdysteroid activity was taken. The experiments were conducted with the phytoecdysteroid concentration of 40, 50, 60 and 70 % and number of treatment viz; single, double,triple. Variation in the number of treatment (P1>0.05) of B. mori larvae significantly influenced the larval duration, larval length, larval weight and survival of larvae. The larval duration decreased from 22.90 days (control) to the minimum of 21.52 days in case of 60%, double treatment of larvae. The larval length increases with the increasing phytoecdysteroid concentration and number of treatment up to 60%, double treatment of larvae. The maximum larval length was recorded to be 6.98 cm in case of 60%, double treatment of larvae while it was minimum (4.90 cm) in 70%, triple treatment of larvae. The weight of larvae increased with the increasing phytoecdysteroid treatment from single to double treatment in 40, 50 and 60% phytoecdysteroid concentration and it was maximum (0.14.36 gm) in 60%, double treatment of larvae. The maximum survival of larvae was noticed to be 95.25±1.55 per cent in case of double treatment of larvae by 60% phytoecdysteroid concentration

Effect of fertigation on available soil micro-nutrient under Kinnow Mandarin

A field experiment was conducted at Division of Fruit and Horticultural Technology, Indian Agricultural Research Institute (IARI), on 5-year-old plants at Todapur Orchard, IARI, New Delhi, during 2010-2011, to study the effect of fertigation on nutrient distribution pattern under Kinnow mandarin. Standard dose of fertilizers were 600g of N, 300g of P, and 400g of K per tree per year, scheduled in three splits during the period of February (300g N, 75g P and 100g K), April (150g N, 112.5g P and 150g K) and August (150g N, 112.5g P and 150g K) respectively. The soil nutrient was measured at the start and end of the experiment in February 2010 and January 2011 at three depths, viz. 0-15, 15- 30 and 30- 60 cm corresponding to two radial distances (50 and 100 cm) for different experimental treatments. The highest amount of soil iron at the end of experiment was observed in T6 having 3.98 ppm, followed by 3.78 ppm and 3.72 ppm at three different depths viz: 0-15, 15-30 and 30- 60 cm respectively at 50 cm distance whereas 3.56 ppm followed by 3.49 ppm and 3.32 were found at 100 cm distance away from the tree. T6recorded the highest amount of available copper in soil having 2.76 ppm followed by 2.73 ppm and 2.67 ppm from 0-15, 15-30 and 30- 60 cm depths respectively at the distance of 50 cm while, 2.68 ppm, 2.65 ppm and 2.61 ppm from 0-15, 15-30 and 30- 60 cm depths respectively at 100 cm away from the tree. T8 recorded the highest amount of soil zinc at the end of experiment, 2.59 ppm, 2.50 ppm and 2.20 ppm from 0-15, 15-30 and 30- 60 cm depths respectively from the distance of 50 cm and 2.31 ppm, 2.20 ppm and 1.74 ppm from 0-15, 15-30 and 30- 60 cm depths respectively away from the tree. The highest amount of soil manganese was recorded in T8 at the end of experiment. From 0-15, 15-30 and 30- 60 cm depths respectively 28.38 ppm followed by 24.84 ppm and 21.09 ppm at a distance of 50 cm while 29.88 ppm, 22.40 ppm and 17.43 ppm were observed at 0-15, 15-30 and 30- 60 cm depths respectively away from the tree. Fertigation resulted in increase in concentrationsof micro- nutrients near the zone of active roots (0-15 and 15-30 cm depths), exhibiting a radial decrease with increasing horizontal distance from the point of application, i.e. higher at 50 cmand lower at 100 cm distance from the trunk. It was recommended that fertigation with 75 per cent N and 100 per cent P & K (450 g N, 300g P and 400 g K) can be recommended for application in three splits during February (225N:75P:100K), Apri1(112.5N: 112.5P: 150 K) and August (112.5N: 112.5P: 150 K) for young Kinnow orchards.Keywords: Kinnow, fertigation, micronutrient, depth, distanc

KamLAND Bounds on Solar Antineutrinos and neutrino transition magnetic moments

We investigate the possibility of detecting solar electron antineutrinos with the KamLAND experiment. These electron antineutrinos are predicted by spin-flavor oscillations at a significant rate even if this mechanism is not the leading solution to the SNP. KamLAND is sensitive to antineutrinos originated from solar ${}^8$B neutrinos. From KamLAND negative results after 145 days of data taking, we obtain model independent limits on the total flux of solar electron antineutrinos $\Phi({}^8 B)< 1.1-3.5\times 10^4 cm^{-2}\ s^{-1}$, more than one order of magnitude smaller than existing limits, and on their appearance probability$P<0.15%$(95antineutrino production by spin-flavor precession, this upper bound implies an upper limit on the product of the intrinsic neutrino magnetic moment and the value of the solar magnetic field$\mu B< 2.3\times 10^{-21}$MeV 95LMA$(\Delta m^2, \tan^2\theta)$values). Limits on neutrino transition moments are also obtained. For realistic values of other astrophysical solar parameters these upper limits would imply that the neutrino magnetic moment is constrained to be, in the most conservative case,$\mu\lsim 3.9\times 10^{-12} \mu_B$(95CL) for a relatively small field$B= 50$kG. For higher values of the magnetic field we obtain:$\mu\lsim 9.0\times 10^{-13} \mu_B$for field$B= 200$kG and$\mu\lsim 2.0\times 10^{-13} \mu_B$for field$B= 1000$ kG at the same statistical significance.Comment: 13 pages, 2 figure

Plane-symmetric inhomogeneous magnetized viscous fluid universe with a variable Λ\Lambda

The behavior of magnetic field in plane symmetric inhomogeneous cosmological models for bulk viscous distribution is investigated. The coefficient of bulk viscosity is assumed to be a power function of mass density $(\xi =\xi_{0}\rho^{n})$. The values of cosmological constant for these models are found to be small and positive which are supported by the results from recent supernovae Ia observations. Some physical and geometric aspects of the models are also discussed.Comment: 18 pages, LaTex, no figur

Demonstration of the temporal matter-wave Talbot effect for trapped matter waves

We demonstrate the temporal Talbot effect for trapped matter waves using ultracold atoms in an optical lattice. We investigate the phase evolution of an array of essentially non-interacting matter waves and observe matter-wave collapse and revival in the form of a Talbot interference pattern. By using long expansion times, we image momentum space with sub-recoil resolution, allowing us to observe fractional Talbot fringes up to 10th order.Comment: 17 pages, 7 figure

Kaon Production and Kaon to Pion Ratio in Au+Au Collisions at \snn=130 GeV

Mid-rapidity transverse mass spectra and multiplicity densities of charged and neutral kaons are reported for Au+Au collisions at \snn=130 GeV at RHIC. The spectra are exponential in transverse mass, with an inverse slope of about 280 MeV in central collisions. The multiplicity densities for these particles scale with the negative hadron pseudo-rapidity density. The charged kaon to pion ratios are $K^+/\pi^- = 0.161 \pm 0.002 {\rm (stat)} \pm 0.024 {\rm (syst)}$ and $K^-/\pi^- = 0.146 \pm 0.002 {\rm (stat)} \pm 0.022 {\rm (syst)}$ for the most central collisions. The $K^+/\pi^-$ ratio is lower than the same ratio observed at the SPS while the $K^-/\pi^-$ is higher than the SPS result. Both ratios are enhanced by about 50% relative to p+p and $\bar{\rm p}$+p collision data at similar energies.Comment: 6 pages, 3 figures, 1 tabl

Azimuthal anisotropy at RHIC: the first and fourth harmonics

We report the first observations of the first harmonic (directed flow, v_1), and the fourth harmonic (v_4), in the azimuthal distribution of particles with respect to the reaction plane in Au+Au collisions at the Relativistic Heavy Ion Collider (RHIC). Both measurements were done taking advantage of the large elliptic flow (v_2) generated at RHIC. From the correlation of v_2 with v_1 it is determined that v_2 is positive, or {\it in-plane}. The integrated v_4 is about a factor of 10 smaller than v_2. For the sixth (v_6) and eighth (v_8) harmonics upper limits on the magnitudes are reported.Comment: 6 pages with 3 figures, as accepted for Phys. Rev. Letters The data tables are at http://www.star.bnl.gov/central/publications/pubDetail.php?id=3

Mid-rapidity anti-proton to proton ratio from Au+Au collisions at sNN=130 \sqrt{s_{NN}} = 130 GeV

We report results on the ratio of mid-rapidity anti-proton to proton yields in Au+Au collisions at \rts = 130 GeV per nucleon pair as measured by the STAR experiment at RHIC. Within the rapidity and transverse momentum range of $|y|<0.5$ and 0.4 $<p_t<$ 1.0 GeV/$c$, the ratio is essentially independent of either transverse momentum or rapidity, with an average of $0.65\pm 0.01_{\rm (stat.)} \pm 0.07_{\rm (syst.)}$ for minimum bias collisions. Within errors, no strong centrality dependence is observed. The results indicate that at this RHIC energy, although the $p$-\pb pair production becomes important at mid-rapidity, a significant excess of baryons over anti-baryons is still present.Comment: 5 pages, 3 figures, accepted by Phys. Rev. Let