Management of rhinoceros beetle (Oryctes rhinoceros L.) by biological suppression with Oryctes baculovirus in Andhra Pradesh

The large scale demonstrations on efficacy of Oryctes baculovirus in managing coconut rhinoceros beetle, Oryctes rhinoceros was carried out in 50 acres each at Borivanka, Kuttuma and Bhiripuram, villages in Srikakulam district and Nagullanka and Atreyapuram villages in East Godavari district of coastal Andhra Pradesh. The release of the virus infected beetles was initiated in April 2012 and continued up to June 2013 and the leaf and spindle damage were recorded at three months interval up to twelve months. Before the release of baculovirus infected beetles, per cent of leaf damage due to beetles ranged from 12.5 to 35.5 and spindle damage ranged from 33.3 per cent to 45 per cent. After one year of release of baculovirus infected beetles, leaf damage decreased and ranged from 6.8 to 18.5 per cent and the spindle damage also reduced and ranged from 7.5 to 13 per cent in the mass demonstration villages. In plantations of coconut where application of insecticides is hazardous, biological control with baculovirus infected beetles holds importance

Performance of coconut (Cocos nucifera L.) hybrids for yield and quality in the Utkal plain region of Odisha state, India

Cocos nucifera L. is a perennial oil yielding crop with a long productive life span (>60 years); thus, identifying a suitable high yielding hybrid to a particular agro-climatic region plays a prime role in achieving sustainable coconut yield. In this context, an evaluation trial with varietal cross combinations involving Tall × Dwarf (six crosses) and Dwarf × Tall (two crosses) was conducted at All India Coordinated Research Project (AICRP) on Palms, Bhubaneshwar Centre, Odisha, for 15 years. The experiment was laid out in randomized block design with four replications maintaining six palms per replication. Observations on yield and yield attributing characters during 2018 to 2020 revealed the superior performance of ECT × GBGD (99.1 nuts), which was followed by ECT × MYD (86.9 nuts) over the local check (ECT) by recording higher nut yield. Copra output per palm was significantly the highest under ECT × GBGD (20.6 kg palm-1), followed by LCT × COD (18.6 kg palm-1). Hybrids possessed a higher quantity of organoleptically ‘good’ tender nut water (270.3 to 354.1 mL) with TSS of 5.8 to 6.9 °Brix, 25.4 to 34.0 ppm of sodium and 2065.9 to 2885.0 ppm of potassium

Initial performance of ten oil palm cross combinations under three agro-climatic conditions in India

High yielding hybrids can play an important role in increasing the productivity of oil in the oil palm. With a view to evaluate high yielding new oil palm cross combinations, a field experiment was conducted in different agro-climatic regions of India viz., Zone No-10 Southern Plateau and Hills (Gangavathi, Karnataka), Zone No-12 Western Coastal Plains and Ghats (Mulde, Maharashtra) and Zone No-11 Eastern Coastal Plains and Hills (Vijayarai, Andhra Pradesh) involving ten cross combinations of tenera oil palm (NRCOP 1-10). The data from three locations over two years indicated that, significantly higher annual rate of leaf production per palm was recorded in NRCOP-6 (21.7) compared to NRCOP-3 and it was on par with other hybrid combinations. Significantly higher sex ratio was recorded with NRCOP-4 (63.1%) compared to NRCOP-1 (54.6%) and NRCOP-6 (54.8%) and was on par with other hybrid combinations.The hybrid cross combination, NRCOP-4 recorded significantly higher fresh fruit bunches (FFBs) yield 12.5 t ha-1 compared to NRCOP-1, NRCOP-3, NRCOP-7 and NRCOP-9 and it was on par with remaining hybrids and a similar result in bunch weight and number of bunches per palm was recorded. Pooled data on FFB yield for 2013-15 indicated that the hybrid combination NRCOP-4 which recorded higher FFB yield (12.6 t ha-1) at Gangavathi and at Vijayarai (22.6 t ha-1) have better prospects for adaptation under Tungabhadra command area and coastal region of Andhra Pradesh. For Konkan region of Maharashtra, the hybrid NRCOP-8 recorded the highest FFB yield

Management of coconut slug caterpillar (Macroplectra nararia) with light traps

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USE OF INTERNET BY UNDERGRADUATE STUDENTS OF P D A COLLEGE OF ENGINEERING, GULBARGA

31-42The present study surveys and reports the use of internet by one hundred and ninety-three undergraduate students of engineering. Observes that, the internet use is confined to general or recreational purposes and its potential in supporting curricular requirements has not been realized by the students. The use of Internet at college is being made by very few students and this needs to be increased.Also Internet facility should be extended to library, as it has become an important source of information, facilitating effective communication and being a major information retrieval tool. Concludes that awareness needs to be created among the students for using Internet in addition to the library facilities and training is to be provided to acquaint students with Internet and its resources

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Not AvailableAn experiment was conducted at Horticultural Research Station, Ambajipeta during 2006-2011 to identify the most suitable intercrop among medicinal and aromatics under coconut. The trial was laid out in June, 2006 with four aromatic crops and one medicinal crop in randomized block design with four replications. The results revealed that the yield of all the medicinal and aromatic plants grown as intercrop were found to be reduced compared to their sole crop yields. The reduction in yield was less in lemon grass (4.5%) followed by citronella (9.3%), palmarosa (10.3%), patchouli (14.7 %) and mango ginger (14.9%). The nut yield of coconut increased with intercropping of medicinal and aromatic plants. Coconut+patchouli intercropping system recorded 55.3% increase in nut yield/palm followed by coconut+palmarosa (43.5%) when compared to monocrop yield. The economic analysis of the cropping system revealed that the highest net returns were recorded in crop combination coconut + patchouli (Rs. 1,43,705/-) with benefit – cost ratio of 2.84 followed by coconut + citronella (Rs.1,08,870/-) with benefit – cost ratio of 2.12 compared to the net returns of Rs. 29,650/- with benefit - cost ratio of 1.60 in monocropping of coconut. Hence, cultivation of patchouli followed by citronella as intercrops in coconut can be recommended to the farmers of Coastal Andhra Pradesh in general and to the East Godavari area in particular.Not Availabl