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Anand Agricultural University, Anand

Anand Agricultural University (AAU) was established in 2004 at Anand with the support of the Government of Gujarat, Act No.(Guj 5 of 2004) dated April 29, 2004. Caved out of the erstwhile Gujarat Agricultural University (GAU), the dream institution of Sardar Vallabhbhai Patel and Dr. K. M. Munshi, the AAU was set up to provide support to the farming community in three facets namely education, research and extension activities in Agriculture, Horticulture Engineering, product Processing and Home Science. At present there seven Colleges, seventeen Research Centers and six Extension Education Institute working in nine districts of Gujarat namely Ahmedabad, Anand, Dahod, Kheda, Panchmahal, Vadodara, Mahisagar, Botad and Chhotaudepur AAU's activities have expanded to span newer commodity sectors such as soil health card, bio-diesel, medicinal plants apart from the mandatory ones like rice, maize, tobacco, vegetable crops, fruit crops, forage crops, animal breeding, nutrition and dairy products etc. the core of AAU's operating philosophy however, continues to create the partnership between the rural people and committed academic as the basic for sustainable rural development. In pursuing its various programmes AAU's overall mission is to promote sustainable growth and economic independence in rural society. AAU aims to do this through education, research and extension education. Thus, AAU works towards the empowerment of the farmers.

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1981 - 19898
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Subject: Nematology × End date: 1989 × Start date: 1980 ×
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Now showing 1 - 8 of 8
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    ThesisItemOpen Access
    STUNT NEMATODE, TYLENCHORHYNCHUS VULGARIS UPADHYAY et al., 1972 ON BIDI TOBACCO
    (AAU, Anand, 1989) PATEL, ASHOKKUMAR SHIVRAMBHAI; Patel, H. R.
    Study on comparative effect of Tylenchorhynchus vulgaris on seedling development of bidi tobacco Anand 119 (A 119) and - Gujarat Tobacco 5 (GT 5) showed that surface inoculation of the nematode reduced the fresh weight (10.91 per cent) and number of transplants (13.87 per cent) with higher multiplication (5.40 per cent) in A 119 than GT 5. Initial inoctaum of 1,000 nematodes and above/pot/15 kg soil adversely affected the seedling development with significant reduction in number of transplants by 39 per cent over check. Final population of the nematode was significantly increased with corresponding increase in initial inoculum levels with a trend of increased inoculum levels to decrease the reproduction rate. Interaction (V X I) revealed initial inoculum of 100 and 1,000 nematodes and above/pot/15 kg soil reduced the number of transplants significantly in A 119 and GT 5 respectively than their respective checks; while, final population of the nematode was higher in all inoculum levels of A 119 than respective inoculum levels of GT 5 showing more preference of the nematode to A 119 than GT 5. Coinparative pathogenicity of T, vulgaris on transplants of A 119 and GT 5 revealed variety GT 5 as significantly superior to A 119 in plant growth and nicotine content with less multiplication of the nematode by 4.69 per cent over A 119. Initial inoculum of 1,000 nematodes and above/plant/ 700 g soil significantly reduced the plant growth (except shoot dry weight) and nicotine content compared to check. Observations on final nema population exhibited the same trend as on seedlings in above experiment. Studies on biochemical changes revealed that with increase in age of A 119 and GT 5, the peroxidase and polyphenol oxidase activities were increased. Both these activities with phenol content were slightly higher in A 119 compared to GT 5. Increase in inoculum of the stunt nematode on seedling and transplant of A 119 and GT 5 correspondingly increased the peroxidase activity and total phenol content (except seedling); while, it decreased the polyphenol oxidase activity after 45 and 100 days. Inoculation of 1,000 nematodes/plant revealed nine varieties of tobacco viz., A 145, Coker 254, FCH 6005 (Bhavya), GC 1, GT 4, GT 5, VA 145, VA 770 and 16-103 as tolerant three viz., A 119, GT 6 and VFC special as susceptible and variety A2 as intolerant after 45 days. Inoculation of 1,000 nematodes/plant revealed brinjal (Doli 5) and tobacco (A 119) as excellent and good hosts of T. vulgaris respectively; while, cabbage (Golden acre), cauliflower (Early Kunwari), castor (GCH 2), maize (Ganga safed 2), Wheat (Sonalika), tobacco (GC 1 and GT 5) as moderate/ fair hosts; fennel (PF 35), garlic (Local), mustard (Varuna), sesamum (Gujarat 1) and white and pink flower periwinkle (Local) as poor hosts after 45 days. Carbofuran, ethoprophos, FMC67825H0E 388 and phorate each @ 1,2 and 5 kg/ha significantly improved the plant growth of bidi tobacco and reduced the final population of the nematode. Ethoprophos was most effective followed by carbofuran and phorate in improving plant growth; while, carbofuran was most effective followed by ethoprophos and FMC 67825 in reducing final population of the nematode. Among the doses, higher dose of 3 kg/ha was most effective than lower doses. Interaction (N: x D) revealed carbofuran @ 3 kg/ha was most effective in improving plant grovrth and reducing the final population of the nematodes followed by ethoprophos @ 3 kg/ha. Application of organic amendments viz., neem, mustard, castor, piludi, karanj and mahuva cakes, poultry manure, pulverized Azolla. dry Azolla. farm yard manure, press mud and ash of paddy husk @ 45 kg N/ha revealed that mustard cake proved the best in improving fresh weight of shoot closely followed by poultry manure, mahuva, karanj, piludi cakes, press mud and castor cake; while castor cake was the best in reducing the final population of the nematode followed by neem cake, poultry manure and piludi cake.
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    ThesisItemOpen Access
    SEASONAL FLUCTUATIONS IN POPULATIONS OF PLANT PARASITIC NEMATODES ASSOCIATED WITH BIDI TOBACCO
    (AAU, Anand, 1982) PATEL, BHAGABHAI A.; Thakar, N. A.
    An experiment to study the population fluctuations in plant parasitic nematodes on bidi tobacco revealed the presence of nine species of plant parasitic nematodes viz. Meloidogyne javanica, M. incognita, Rotylenchulus reniformis, Duotylenchus bilineatus, Trlenchorhynchus brevilineatus, Aphelenchoides parascalacaudatus, Aphelenchus avenae, Ditylenchus triformis and Pratylenchus zeae. Duotylenchus bilineatus was reported for the first time to associate with tobacco in India and abroad.
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    ThesisItemOpen Access
    EFFECT OF THE STUNT NEMATODE, Tylenchorhynchus vulgaris UPADHYAY et al., 1972 ON WHEAT AND ITS CONTROL
    (AAU, Anand, 1987) PATEL, PANKAJKUMAR NARANBHAI; Thakar, N. A.
    A pathogenicity study of the stunt nematode, Tylenchorhynchus vulgaris on wheat variety J-24 with different inoculum levels viz. 10, 100, 1,000 and 10,000 nematodes per plant/pot of 600 g soil keeping uninoculated control as check revealed the inoculum levels of 1,000 and above to reduce significantly the different growth attributes viz. shoot length, fresh shoot and root weights compared with control. In the growth character of root length, the inoculum level of 100 nematodes per plant was also significantly detrimental. The soil population at harvest in soil increased with increase in inoculum levels. However, the reproduction factor was found to increase with increase in initial inoculum levels up to 100 nematodes, while it was decreased with increase in initial inoculum levels of 1,000 and above nematodes per plant. Testing of four systemic granular nematicides viz, Phenarniphos Phorate, Carbofuran and Ethoprophos as soil application with their three doses of 1, 2 and 3 kg/ha against T, vulgaris on wheat variety sonalika resulted all the nematicides at their three doses to increase all the growth attributes under the study except productive tillers and reduced the nematode population significantly over control (no nematicidal treatment). Amongst 4 systemic nematicides under the study, Phorate was the raostp effective in increasing the growth characters except total and productive tillers while, ethoprophos was the least effective. The nematicides carbofuran and phenamiphos were in between these two in their effectiveness in improving the growth characters. The nematicide phenamiphos was found to be the most effective, while ethoprophos was the least effective in reducing the nematode popxilation, Nematicides phorate and carbofuran were moderately effective in reducing the nematode population. Amongst three doses tried, the growth characters of shoot weight and root weight were increased with an increase in doses from 1 to 3 kg/ha, the doses of 2 and 3 kg/ha being at par with each other. The nematode population at harvest decreased with an increase in the doses of different nematicides. Amongst twelve interactions (N x L) phenamiphos 1 & 2 kg, phorate 1, 2 & 3 kg, carbofuran 2 & 3 kg and ethoprophos @ 3 kg/ha were observed to be effective in increasing the shoot length, fresh shoot weight and fresh root weight, while the total and productive tillers were significantly not affected. Except phenamiphos, all the nematicides increased the growth characters with an increase in their doses. In case of phenamiphos, the growth characters were decreased with an increase in its doses which might be due to sane toxic effects of the same on wheat, Phenamiphos @3kg/ha was found to be the most effective in reducing the nematode population followed by phenamiphos 2 kg, phorate 3 kg and carbofuran @ 3 kg/ha. The treatments of ethoprophos 1 kg, carbofuran 1 kg, phorate 1 kg and ethoprophos @ 2 kg/ha were the least effective in nematode reduction. Testing of different organic soil amendments viz, neem cake, mustard cake, castor cake, piludi cake, karanj cake, poultry mainure, azolla dry and green and farm yard manure with urea as soil application @ 120 kg N/ha on the basis of nitrogen availability to control T. vulgaris on Wheat variety sonalika resulted green and dry azolla and mustard cake to increase different growth characters viz, shoot weight, root weight, total tillers and productive tillers significantly over control. Soil treatments with green and dry azolla were found to be the most effective in reducing the nematode population also in soil . The next most effective was mustard cake. Castor cake, Piludi cake. Poultry manure and Neem cake were the least effective, while the remaining treatments of karanj cake, farm yard manure and urea were moderately effective in reducing the nematode population.
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    ThesisItemOpen Access
    CHEMICAL BARE ROOT-DIP TREATMENTS IN THE CONTROL OF ROOT-KNOT NEMATODES, MELOIDOGYNE SPP. INFECTING BIDI TOBACCO
    (AAU, Anand, 1983) PATEL, ASHOK D.; THAKAR, N. A.
    A.Emulsifiable concentrates: From the study on the effect of different nematicides with different controls it was concluded that control one where there was no nematode inoculum not a single nematicide was proved effective either in control of nematodes or increasing different growth characters. In control two having only the soil inoculum different nematicides also could not the root nema population significantly. However, phenamiphos and isofenphos increased the shoot and root weight respectively. In control three where there was only the seedling inoculum phenamiphos, isofenphos, oxamyl, demeton-s-methyl, phosphamidon and quinalphos controlled the root nema population.
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    ThesisItemOpen Access
    RENIFORM NEMATODE, ROTYLENCHULUS RENIFORMIS LINFORD AND OLIVEIRA. 1940, IN PIGEONPEA
    (AAU, Anand, 1989) PATEL, RAVINDRA GOVINDBHAI; PATEL, D. J.
    The experiments on reniform nematode (Rotylenchulus reniformis) affecting pigeonpea were conducted to study 1, Pathogenicity of reniform nematode on pigeonpea to determine threshold level, ii. Biochemical changes brought out by the nematode infection in crop, iii, Histopathological studies to know host-parasite relationship, iv. Varietal screening for locating source(s) of resistance to the nematode and V, Management of nematode through organic amendments and nematicides using pigeonpea variety T-15-15 during 1988-89. Results obtained indicated that : i. An inoculum level of 1,000 nematodes/plant and above was detrimental to the growth and development of pigeonpea cv. T-15-15. Root, soil and total nematode population/plant an significantly increased with increase in an inoculum levels. The nematode reproduction rate decreased with increase in inoculum levels and it was maximum (48.71) in 10 nematodes/ plant and minimum (2.79) in 10,000 nematodes/plant. ii. Roots inoculated with reniform nematodes (10,000 nematodes/plant) significantly decreased polyphenol oxidase and β -glucosidase activities as well as total phenol contents whereas peroxidase activity did not get altered due to nematode infection. iii, Histopathological studies revealed that young female penetrated the epidermal and cortical parenchyma tissues and reached the endodermal layers intracellularly through parenchyma. The one third anterior portion of the female remained embedded in the root. Several cells of pericycle layer surrounding feeding of nematode head formed giant cells. iv. Out of 30 different pigeonpea varieties screened against R. reniformis, none was either immune or resistant or moderately resistant to the nematode. Eighteen and twelve lines had susceptible and highly susceptible reactions respectively. V. Various organic amendments viz., piludi cake, mustard cake, karanj cake, castor cake, mahuva cake as well as pressmud, poultry and farm yard manure and normal fertilization through urea improved plant growth and reduced nematode population as compared to control in pots. Poultry manure proved to be the best from plant growth characters and nematode control view points. The next best organic amendment was pressmud. vi. All eight granular nematicides viz., ethoprophos, sebufos, phorate, HOE 388, benfurocarb, cartap, neemark and carbofuran tried with two doses at 1 and 2 kg/ha enhanced the plant growth and reduced the nematode population as compared to control. Among these, carbofuran and HOE 388 each @ 2 kg/ha and benfurocarb @ 1 kg/ha significantly improved the plant growth characters viz., plant height, fresh shoot and root weights and effectively managed R. reniformis on pigeonpea cv. T-15-15 in pots.
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    ThesisItemOpen Access
    STUDIES ON THE RENIFORM NEMATODE, Rotylenchulus reniformis LINFORD AND OLIVEIRA, 1940 INFECTING MUNGBEAN
    (AAU, Anand, 1982) Patel, Dasharath S.; Thakar, N. A.
    A pathogenicity study of the reniform nametode, Rotylenchulus reniformis on mungbean variety Gujarat -1 with different inoculum levels viz. 10, 100, 1000 and 10,000 soil population keeping uninoculated control as check revealed the inoculum levels of 100 and above to reduce significantly the different growth attributes viz. Shoot length, fresh shoot and root weights compared with control. Different reproductive units viz. Number of total females per plant, number of eggmasses per plant, total number of eggs per plant and soil population at harvest increased with increase in inoculum levels, but reproduction rate decreased with increase in inoculum levels.
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    ThesisItemOpen Access
    STUDIES ON THE RENIFORM NEMATODE, ROTYLENCHULUS RENIFORMIS LINFORD AND OLIVEIRA, 1940 INFECTING COTTON GOSSYPIUM HIRSUTUM L.
    (AAU, Anand, 1989) PATEL, RAKESHKUMAR RANCHHODBHAI; THAKAR, N. A.
    A pathogenicity study of the reniform nematode, Rotylenchulus reniformis on cotton cv. Hybrid-6 with different inoculum levels viz., 10, 100, 1,000 and 10,000 soil population of nematodes/plant/pot of 800 g soil keeping uninoculated control as check revealed the inoculum levels of 1,000 and above to reduce significantly the different growth parameters compared to control. Fresh root weight was also significantly reduced at inoculum level of 100 nematodes/plant/pot of 800 g soil. All the reproductive units were increased with increase in inoculum levels. However, the reproduction factor was decreased with increase in inoculum levels. Varietal screening of 9 cultivars of cotton for resistance against the reniform nematode, R. reniformis resulted six varieties viz., Hybrid-6, Hybrid-4, Suvin , Surat dwarf, H-31-5 and Deltapine-16 susceptible and 3 varieties viz., G-cot-10, American nectorlless and Varalaxmi resistant. The recommended hybrids of Gujarat viz., Hybrid-6 and Hybrid-4 were found susceptible, while G-cot-10 and Varalaxmi were resistant in reactions. Interaction between the R. reniformis and Rhizoctonia bataticoia (virulent and non-virulent strains) revealed non-virulent strain of R. bataticoia to act more or less in a similar fashion as virulent one in causing seedling root-rot of cotton in presence of R. reniformis. In virulent strain of fungus, R. bataticoia, the disease set one week earlier in different combinations of nematode and fungus than fungus alone. Among the different combinations nematode inoculated 15 days prior to fungus inoculation (N-F) proved highly detrimental causing cent per cent rootrot with both the strains of fungus followed by both simultaneously (FN) and fungus inoculated 15 days prior to nematode (F-N). The nematode R. reniformis reduced the different growth parameters over control while,such reductions v;ith fungus R. bataticoia was observed only with the virulent strain of fungus and not with the non-virulent one. The reductions in growth parameters were more evident in fungus R. bataticoia of virulent nature than the nematode R. reniformis. Among the two combinations FN and F-N tlie reductions in growth were more in FN than F-N.
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    ThesisItemOpen Access
    EFFECT OF Rotylenchulus reniformis Linford and Oliveira, 1940 ON CASTOR
    (AAU, Anand, 1981) PATEL, DASHARATH B; Shah, H M