IOSR-JAVS   Volume-8 ~ Issue-11 ~ NOV-2015

ABSTRACT: Phytoremediation of soils of different salinity levels have been investigated in this study using salt tolerant forage crop. Soil was salinized with 5 levels of NaCl (0, 50, 100,150, 200 mmol L⁻¹) in 100 cm height and 50 cm diameter lysimeters . Millet (Pennisetum glaucum L.) was planted as a reclaiming crop for saline soil.

[1]. Ahamed S., Ghafoor A, Aziz M. A. Akhter ME. 2003. Chemistry of calcareoue saline – sodic with sesbania (sesbania aculeate). Pakistan Jouranal of Biological sciences 6(16): 1454-1458.

[2]. Al-Gilani A. 1999. Salt balance in ACSAD lysimeter station .Arabic center of semiarid and dryland-ACSAD.

[3]. Al- Hassani A. B. 1984. characteristics of Shura and Sabakh soils in some Iraq regions. MSc Thesis - College of Agriculture- University of Baghdad.

[4]. Al Zubaidi A . H. 1992. Land reclamation. Ministry of Higher Education and Scientific Research.

[5]. Ashraf M., McNeilly T. 1987. Salinity effects on five cultivars/lines of pearl millet [Pennisetum americanum (L.)]. Plant Soil 103:13–19

[6]. Ashraf M, McNeilly T. M .1992. The potential for exploitingvariation in salinity tolerance in pearl millet [Pennisetum americanum (L.)]. Plant Breed 104:234– 240.

ABSTRACT: A study was carried out on insect pollinators of Sesame (Sesamum indicum L.) crop with special reference to the foraging activity of different species of honeybees during Rabi 2013-14 at Agriculture Research Station, Siruguppa, UAS, Raichur. Various insect pollinators visiting the sesame crop were observed during flowering period. A total of 14 insect species were found visited the sesame flower, out of 14 insect species, 10 spp belongs to Hymenoptera and 4 were belongs to Dipterans. Among Hymenopterans, the 4 spp of honeybees viz., Apis dorsata, Apis cerana, Apis florea and Trigona iridipennis were recorded during flowering period. The foraging activity of honeybees and other pollinators were recorded from 6 AM to 6 PM at an hourly interval during the flowering period. The number of pollinators visiting the sesame flowers were found maximum during 9 to 11 hours. The highest number of pollen foragers were recorded during mid morning hours.

Keywords: Sesame, Pollinators, Foraging activity

[1]. Ali, M. and Alam, Z. 1933. Types of Sesamum indicum. D.C. in the Punjab. Indian J. Agric. Sci., 3:897-911.
[2]. Anonymous, 2000. Economics intelligence services CMIE Publication pp.162.
[3]. Deodikar, G. B. and Suryanarayana, M. C. 1977. Pollination in the service of increasing farm production in India. Advances in pollen spore research. 2:67-68.
[4]. Desai, B. B. 2004. Seeds handbook: biology, production, processing and storage, Science, pp787.
[5]. Mohana Rao, G., Lazar, M. and Suryanarayana, M. C. 1981. Foraging behaviour of honeybees in Sesame (Sesamum indicum L.). Indian Bee J., 43(4):97-100.

ABSTRACT: The mobility of dichlorvos from starch-silver nano slow release formulations (AgSRF) was studied in three different soils in Nigeria. Encapsulation of dichlorvos into starch silver matrix was achieved in situ via chemical reduction of AgNO3 by glucose under direct heating. This slow release formulation of nanosilver (AgSRF), according to the UV/Vis spectra depicted a peak at 419 nm which has been reported to be the characteristic of the Surface Plasmon Resonance (SPR) of silver nanoparticles. The morphology is spherical and size range of 23 -35 nm and X-ray diffraction showed it is partly crystalline. Insecticide release in soil and water was in the order sandy-loam > sandy-clay-loam > clay-loam. This nanoformulation (AgSRF) was compared to technical and commercial grades of dichlorvos respectively. AgSRFmatrix revealed sustained release behaviour more than technical and commercial (EC). In the lixiviation studies, each treatment was analysed in a column (in a duplicate) packed with soil. The columns were leached with 50 -100ml of buffer (pH 6.5) medium for 10 - 14 days.

[[1]. Roy A. Sunil K. S, Bajpai J., Bajpai A. K., Controlled pesticide release from biodegradable polymers Cent. Eur. J. Chem. 12(4), 453-469, 2014. DOI: 10.2478/s11532-013-0405-2
[2]. Tijani, A.A., Oshotimehin, K.O. Economics of pesticides use among Maize farmers in Edo state, Nigeria. Research Journal of Agricultural Biological Sciences, 3(3), 129-132.2007.
[3]. Omolehin R. A., Adeola S. S., Ahmed B., E. O. Ebukiba and O. B. Adeniji; Economics of Insecticides Usage among Cowpea Farmers in Kaduna State, Nigeria,American Journal of Experimental Agriculture, 1(4): 353-362, 2011.
[4]. Wanyika H. N.,; Development of nanostructured smart delivery systems for pesticides and fertilizers, A Thesis submitted to Jomo Kenyatta University of Agriculture and Technology, 2012.
[5]. Szymońska J, M Targosz-Korecka; Characterization of starch nanoparticles , F Krok2,3 Journal of Physics: Conference Series 146 012027, 2009. doi:10.1088/1742-6596/146/1/012027.
[6]. Ihegwuagu N., Mundi S., Adama F., Dalaham P., Etuk-Udoh G., Odunsanya S., Omojola M. and Sha'Ato R.; Rapid Synthesis of Silver Nano Particles Capped In Starch and its Anti - Mold Activity, International Journal of Innovation and Scientific Research, ISSN 2351-8014 Vol. 9 No. 1 , pp. 16-25, 2014.