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Nair, A. K.
- Influence of Various Sources and Levels of Fertilizer Applied through Fertigation on Hybrid Watermelon Grown in Rabi-Summer
Abstract Views :159 |
PDF Views:144
Authors
Affiliations
1 Division of Vegetable Crops, Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bangalore - 560 089, IN
1 Division of Vegetable Crops, Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bangalore - 560 089, IN
Source
Journal of Horticultural Sciences, Vol 8, No 1 (2013), Pagination: 60-64Abstract
A field experiment was conducted at Bangalore during 2006-2008 to study the effect of fertigation on growth and yield of rabi-summer grown watermelon. Seven treatments comprising varying rates and sources of fertilizers were applied. Application of water soluble fertilizer @ 70:70:70kg N:P2O5:K2O per hectare through fertigation gave significantly higher vine length, number of branches per plant and leaf area index. In general, fertigation treatments recorded higher values for number of fruits per plant, fruit weight and total soluble solids than conventional soilapplication of fertilizers. All the fertigation treatments recorded higher average marketable watermelon yield over conventional soil-application of fertilizers amounting to 7.22 to 26.4% increase. Among fertigation treatments, though recommended dose of fertilizer applied as water soluble fertilizer resulted in highest marketable-fruit yield, highest net income (Rs. 229775) and B:C ratio (3.03) was obtained in treatment with 70% of recommended dose of NPK using conventional fertilizers supplied through fertigation.Keywords
Watermelon, Fertigation, Rabi, Summer, Growth, Yield, Economics.- Effect of Microsprinkler Fertigation on Growth and Yield of Rabi Onion
Abstract Views :202 |
PDF Views:104
Authors
Affiliations
1 Division of Vegetable Crops, Indian Institute of Horticultural Research, Hessarghatta Lake Post, Bangalore-560089, IN
1 Division of Vegetable Crops, Indian Institute of Horticultural Research, Hessarghatta Lake Post, Bangalore-560089, IN
Source
Journal of Horticultural Sciences, Vol 6, No 1 (2011), Pagination: 66-68Abstract
A field experiment was conducted during rabi 2005-2006 at Indian Institute of Horticultural Research, Bangalore, to study the performance of onion cv. Arka Niketan as influenced by microsprinkler fertigation using different sources and levels of fertilizers. Results indicated that crop growth in terms of leaf production, plant height, radial and equatorial diameter was not significantly influenced by the treatments. Fertigation treatments were superior for marketable bulb yield as compared to soil application of fertilizer. Also bulb yield through soil application of fertilizer increased by changing over from surface-irrigation to microsprinkler irrigation. However, bulb yield did not significantly decrease by applying just 75% of the recommended NPK fertilizers, using common or water soluble fertilizers supplied through fertigation. For achieving maximum yield, however, it is recommended to apply 100% recommended dose of fertilizers through sprinkler fertigation using water soluble fertilizers.Keywords
Onion, Microsprinkler, Fertigation, Growth and Yield.- Growth and Yield Performance of Hybrid Hot Pepper, Chilli (Capsicum annuum L.) as Influenced by Fertigation and Polyethylene Mulching
Abstract Views :408 |
PDF Views:153
Authors
G. Chandramohan Reddy
1,
S. S. Hebbar
1,
A. K. Nair
1,
H. B. Raghupathy
1,
A. P. Mallikarjuna Gowda
2,
K. Umesha
2
Affiliations
1 Division of Vegetable Crops, ICAR-IIHR Hessaraghatta, Bengaluru-560 089, Karnataka, IN
2 PG Centre, UHS Bagalkot, GKVK Campus, Bengaluru, Karnataka, IN
1 Division of Vegetable Crops, ICAR-IIHR Hessaraghatta, Bengaluru-560 089, Karnataka, IN
2 PG Centre, UHS Bagalkot, GKVK Campus, Bengaluru, Karnataka, IN
Source
Journal of Horticultural Sciences, Vol 11, No 2 (2016), Pagination: 151-155Abstract
A field experiment was conducted at Bengaluru during 2015 to study the effect of fertigation on performance of hybrid chilli (Capsicum annuum L.). The trial included nine treatments comprising varying rates and sources of fertilizers, tested with or without mulching. Application of recommended dose of fertilizer (180:120:180 kg NPK/ha) through fertigation using water-soluble fertilizers resulted in higher values for plant height (104.27 cm), number of branches per plant (16.71), leaf area per plant (89.44 dm2), dry matter per plant (185.49 g), number of fruits per plant (142.7), fruit length (11.13 cm), fruit girth (4.75 cm), fruit weight (1.29 g), yield per plant (184.11 g) and fruit yield (5.03 t/ha) which remained on par with same amount of fertilizer applied using conventional means along with polyethylene mulching. In general, treatments that received fertilizers through fertigation took less number of days to flowering over conventional soil-application of fertilizers. All fertigation treatments recorded higher dry-chilli fruit yield over the conventional soil-application of fertilizers, to a tune of 27.87% to 52.4% over the control.Keywords
Chilli, Fertigation, Water-Soluble Fertilizers, Mulching, Growth, Yield.References
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- Neeraja,G., Reddy, K.M, Reddy, I.P. and Reddy, Y.N. 1999. Effect of irrigation and nitrogen on growth, yield and yield attributes of rabi onion (Allium cepa) in Andhra Pradesh. Veg. Sci., 26: 64-68
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- Prabhakar, M., Hebbar, S.S. and Nair, A.K. 2010a. Production technology of vegetable crops - A handbook. Indian Institute of Horticultural Research, Hessaraghatta, Bengaluru, Karnataka, India, pp. 87-92
- Prabhakar, B.N., Ramachandrappa, B.K., Nanjappa, H.V. and Soumya, T.M. 2010b. Effect of frequency and methods of fertigation on growth, yield, quality and economics of green chilli (Capsicum annuum L.). Mysore J. Agril. Sci., 44:523-528
- Ramachandrappa, B.K., Nanjappa, H.V., Prabhakar, B.N. and Soumya,T.M. 2010. Effect of sources and level of fertilizer for drip fertigation on crop productivity, ischolar_maining and fertilizer use efficiency in green chilli (Capsicum annuum L.). Mysore J. Agril. Sci., 44:345-349
- Sanchita, B., Luchon, S., Pankaj, B., Tridip and Bhaskarjyothi. 2010. Studies on effect of fertigation with different levels of N and K fertilizers on growth, yield and economics of early season capsicum under cover. Veg Sci., 37:160-163
- Standardization of Spacing and Soil Volume Wetting for Drip Irrigation in Papaya (Carica papaya L.)
Abstract Views :482 |
PDF Views:188
Authors
Affiliations
1 ICAR-Indian Institute of Horticultural Research, Bengaluru - 560 089, IN
1 ICAR-Indian Institute of Horticultural Research, Bengaluru - 560 089, IN
Source
Journal of Horticultural Sciences, Vol 15, No 1 (2020), Pagination: 35-44Abstract
Field experiments in two crops of papaya were conducted at ICAR-Indian Institute of Horticultural Research for four years during 2016-19 to standardise spacing with optimum soil volume wetting for drip irrigation. Narrowing the plant rows drastically reduced the plant height while leaf production affected significantly due to reduction in intra row spacing. The height at first fruiting was significantly lower with a spacing of 1.8 m x 1.5 m (56.4 cm) significantly differing from both 1.5 m x 1.5 m (60.9 cm) or 1.8 m x 1.8 m (66.8 cm). Significantly higher mean fruit yield (42.2 t/ha) was recorded with the spacing of 1.5 m x 1.5m as compared to either 1.8m x 1.5m (23.4 t/ha) or 1.8m x 1.8m (22.1 t/ha). Significantly higher water use efficiency (71.3 kg/ha.mm) was recorded in papaya by following closer spacing of 1.5 m x 1.5 m. Among the interactions, higher papaya yield (48.0 t/ha) was recorded with normal drip irrigation (80% soil volume wetting) under closer spacing (1.5 m. x 1.5 m). Further, higher water use efficiency (129 kg/ha. mm) could be obtained by scheduling the irrigation at 30% soil volume wetting especially by planting at 1.5 m. x 1.5 m. spacing suggesting its suitability for water scarcity areas.Keywords
Papaya Yield, Scheduling Irrigation, Soil Volume Wetting, Spacing, Water Use Efficiency.References
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- Singh D.B., Roshan R.K., Pebam N., Yadav M., 2010. Effect of different spacings on growth, yield and yield characters of papaya (Carica papaya L.) cv. Coorg Honey Dew, Acta Horti., 851:291294.
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