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Master Degree Theses
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ThesisItem Open Access Determination of Residues of Carbaryl and Endosulfan On in Mango Fruits(Agricultural Entomology Department, N. M. College of Agriculture, Gujarat Agricultural University, 1978-08) Valand, Vitthalbhai Manganbhai; Shah, A. H.This study on the determination of residues of carbaryl and endosulfan on/in mango fruits is in partial fulfilment of the M. Sc. (Agri.) Course which VALAND VIT'l'HALBHAI MAGANBHAI has taken up under the direction of Dr. Shah A. R., Professor and Head, Department of Entomology, N. M. College of Agriculture, Navsari. Chemioal and micro bio-assay of residues of recommended insecticides, viz., carbaryl and endo.ulfan which were used at the concentration of 0.2 per cent and 0.075 per cen~respectivel~ as schedule of spraying in 1976-77 and only one spraying in 1977-78 as a part of insect pest management programme in mango crop have been carried out. In the chemical assay the residues of carbaryl on the mango fruits found immediately after the last spraying was 58.15 ppm in 1976-77, and the same after 3rd, 7th and 25th days were 37.22, 18.49 and 10.30 ppm respectively. Similarly, it was 52.56 ppm as initial deposit in 1977-78 and the same after 3rd, 7th and 19th day of one spraying were 38.00, 20.50 and 8.80 ppm respectively. 'thus the reduction percentage of carbaryl residue found were 36.00, 50.32 and 65.71 per cent in 1976-77 and 27.70, 61.00 and 83.26 per cent in the year 1977-78 on 3rd, 7th and 25th/19th day after spraying of oarbaryl respectively. The half life of carbaryl residues wes· 3.19 and 3.00 days in 1976-77 and 1977-7.8 respectivelyThesisItem Open Access Seasonal Incidence, Varietal Screening and Assessment of Crop Loss by Sweet Potato Weevil, Cylas formicarius (Fabricius)(Agricultural Entomology Department, N. M. College of Agriculture, Gujarat Agricultural University, 2011-06) Mahida, Rajvirsinh D.; Saxena, S. P.ThesisItem Open Access Evaluation of Suitable Pest Management Strategy Against Major insect Pests of Gram, Cicer arietinum L.(Agricultural Entomology Department, N. M. College of Agriculture, Gujarat Agricultural University, 2011-06) Subhashrao, Bande Vikrant; Pandiya, H. BThesisItem Open Access Ecology and control of Sucking Pests of chilli with Special Reference to Polyhagotarsonemus latus Banks (Acari : Tarsonemidae)(Entomology Department, N. M. College of Agriculture Gujarat Agricultural University, Navsari, 1999-02) Solanki, Vijaysinh Yashavantsinh; Rai, A. B.ThesisItem Open Access Ecology and Control of Oligonychus indicus Hirst (Acarina : Tetranychidae) on Sorghum(Entomology Department, N. M. College of Agriculture Gujarat Agricultural University, Navsari, 2000-06) Deshmukh, S.Y; Patel, J. RThesisItem Open Access Biodiversity of Sapota Fruit Flies in Navsari District of South Gujarat and bioecological Aspects of Fruit Fly, Bactrocera dorsalis (Hendel)(Agricultural Entomology Department, N. M. College of Agriculture, Gujarat Agricultural University, 2011-06) Subhash, Nandre Amol; Shukla, AbhishekThesisItem Open Access Biology and Chemical Control of Mealy Bug, Coccidohystrix insolita (Green) (Pseudococcidae : Homoptera) on Pigeon Pea (Cajanus cajan (L.) millsp)(Agricultural Entomology Department, N. M. College of Agriculture, Gujarat Agricultural University, 1989-11) Patel, Kanubhai Kishorbhai; Jhala, R.C.ThesisItem Open Access Response of Ajowan (Trachyspermum ammi L.) to date of Sowing and planting geometry under South Gujarat Condition(Agronomy Department, N. M. College of Agriculture Gujarat Agricultural University, 2009-07) Amrutbhai, Chavada Nileshkumar; Raj, V. CA fi e ld e.,,,eriment was ~o ndu~ted during ,ab; season of :'007-08 at [n $ tru ~ tional farm. Nnsari Agri~ul l ura l University. Na\"$ari 10 study tbe response of ajo .... an ( T"u;h..-spu",utrl a",,,,; L.) 10 date of sow ing and " Ianling geometry under Soutb Gujarat condit ion. Tbe sni l nf uperimental field was clayey in tUlure. low in nitrogen (1 38 .20 kg ba·'). medium in a\"a ilable pbospborus (32.63 kg lIa· I). fai rly rich in anilable pOlassium (-110 kg ha-') and slightly alkali ne in reaction lpH 7.6). Total sixteen lTeatmenl combinat ions ~o m"ri s ing of four date of sowing \" iz .. D, (2" week of No\"e mber) 2007. D; (-I'~ week of ~ov c mbcr) 2007. DJ p'. " eek of De~embe r ) 2007 and D. (..\ .. week of Dcccmber) 2007 and fo ur planling geomctries (G , : ..\5 x l 5 cm. G:: -Ih JO cm. GJ : 60 x 15 cm and G.: 60 .'t 30 em) '>ere evaluated in split 1'101 design wilh four replicat ions. The culli" ar Gujarat Ajo.nn- I was so .... n on fou r different dalcs ,·iz .. \2- 11 -07. :'7-1 1-07 . 12- 12-07 and 27- 12·07 and was har.-csled on aHainin! the maturity. The nop was fenilized wilh 40.20-0 NPK kg h,,:' and irrigated 1$ and when required_ The rC$ults revealed thai diffe rent date of sowing produced significant ..-a,ialions in mOSI of Ihe growth as well as yield :lIlributes studied. The date of sowing D, (2"" week of Nov~mber) recorded higher values for planl population. plant height. number of primary and secondary branches per plant. number of umbels per plant, number of umbellalCS per umbel. number of seed per umbellate. lest weight. seed Ind straw yield per hectare compared to D1 (4'· week of November). OJ (2'" week of December) and D. (4'· week of December). 0 , (2" week of November) increased the sced and suaw yield by 7. 14.13.34 and 25. 10 per cent and 4.45. 9.79 and I g.22 per cent. re spe" ively over 0 1 (4 '· week of November). OJ (2"4 week of December ) and D. (4'· week of December). Days to SO per cenl nowering was signi fi ca ntly affected by date o f sowing where in laiC sowing reduced Ihe nowering days. In case of quality parameters. volatile oil contcnt and yield were recorded hi gher in D, (2"" week of November). 0 , (2"" week of November) sowing reco rded the highest net gain of Rs. 70618 ha" with BCR of 4.55 followed by 0 1 (4'· wcek of November) sowing with nct gain o f Rs. 65355 ha" with OCR o f 4.2 1. Among the various planting geometries. 60 II 30 em (G.) and 45 x 30 cm {GIl found equally effective in improving almost all the growth and yield parameters studied. 1I0wever, these treatmentS failed to touch the yield level recorded under closer planting geometry 45 II 15 cm (G,l main ly due to low plant populalion pc r heclare. Significantly the highest seed yield was recorded with the planling geometry of 45 x 15 ern (G,l. This treatment increased the seed and straw yields by 9_61, 3.86 and 13.38 per cent and 6.71,1 .97 and 10.27 per cenl over 45 x 30 Cm (Gll, 60 x 15 cm (G) and 60 x 30 ern (G.), respectively_ Days to 50 per cent nowering was not affected significantly by any of the geometry. With regards to quality parameters, planting geometry failed to exert their significant effect on volatile oil content and yield. Growing crop at 45 x 15 cm (G ,) geometry found most remunerative with maximum net realizalion of Rs. 66430 ha·' and higher nCR of 4.00. The treatment combination D,Gt (ajowan crop sown on 2·~ week of November with 45 x 15 em spacing) emerged as the best treatment combination with muimum net realization of Rs. 75249 ha· 1 and higher BCR 4.53. On the basis of results obtained from present one year study, it can be concluded that higher and profitable yield of ajowan (Cv_ Gujarat Ajowan·l) can be obtained by sow ing the crop on 2"d week o f November wi th spacing of 45 x 15 ern under South Gujarat condition_ThesisItem Open Access Studies on Effect of Quinalphos Vis-A-vis Otehr Insecticides on Pest Complex of Hybrid-5 Cotton(Agricultural Entomology Department, N. M. College of Agriculture, Gujarat Agricultural University, 1979-05) Patel, Bharatkumar Naginbhai; Shah, A. H.