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Integrated potato cyst nematode (Globodera sp) management strategies for south Indian hills.

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Title Integrated potato cyst nematode (Globodera sp) management strategies for south Indian hills.
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Subject Integrated pest management, potato cyst nematodes, crop rotation, solanaceous crops, resistant cultivar
 
Description Not Available
The eggs present in the hard coated cysts of potato cyst nematodes (PCN) Globodera sp hatch out only in the presence of potato (Solanum tuberosum L) root exudates of host plants. Non-availability of host plant along with the application of synthetic chemicals is expected to control this hard coated soil borne pest without much negative impact on the environment. Thus, the effects of seven different two year crop rotations of susceptible (Kufri Jyoti) and resistant (Kufri Swarna) cultivars of potato along with three non-host crops (cabbage-Brassica oleracea, carrot-Dacus carota and radish-Raphanus sativus) of PCN, in different crop rotation combinations were evaluated with an aim to find out the best rotation suitable to manage the PCN population. Effective nematode reduction (47% in 2 years) could be achieved by rotating susceptible potato variety with the resistant (resistant to both G. pallida and G. rostochiensis) one, and application of carbofuran @ 2.0 kg a.i. haâ^’1 for each crop of potato. However, higher economic returns (BC ratio: 2.91) were recorded in the treatment potato-cabbage-carrot-potato, along with carbofuran application to potato, which could not contain the nematode buildup substantially (5%) in two years rotation. Alternating the resistant potato with non-solanaceous crop in between two susceptible potato crops could bring down the PCN population only to the extent of 20–25%. The effectiveness of growing non-solanaceous crops to contain PCN populations in rotation is comparatively lower (20 to 25%) when compared with resistant potato varieties (47%). This integrated strategy with negligible negative impact on environment is recommended for PCN management
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2019-12-07T09:23:17Z
2019-12-07T09:23:17Z
2016-01-01
Research Paper
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http://krishi.icar.gov.in/jspui/handle/123456789/28658
English
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oai:krishi.icar.gov.in:123456789/211242022-03-10T08:33:02Zcom_123456789_109com_123456789_8col_123456789_516
Soil Nutrient Status and Leaf Nut Norms in OP Plantations Grown in the .... of India.
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Behera et al
DRIS, foliar diagnosis, Goa, leaf nutrient, oil palm, soil fertility
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Oil palm (Elaeis guineensis Jacq.) is a heavy feeder of nutrients and requires balanced and adequate supply of nutrients for optimum growth and yield. Information regarding soil nutrient status and leaf nutrient concentration is very much required for proper fertilizer application. Therefore, a survey was conducted for assessment of soil nutrient status and leaf nutrient concentration in 64 oil palm plantations in the state of Goa lying in the west coastal region of India. Soil pH, electrical conductivity (EC), organic carbon (OC), available potassium (K) (ammonium acetate-extractable K) (NH4OAc-K), available phosphorus (P) (Bray’s-P), exchangeable calcium (Ca) (Exch. Ca) and magnesium (Mg) (Exch. Mg), available sulphur (S) (calcium chloride-extractable S) (CaCl2-S), and hot water soluble boron (B) (HWB) in surface (0–20 cm depth) soil layers ranged from 4.25 to 6.77, 0.05 to 1.06 dS m–1, 5.07 to 48.4 g kg–1, 58.1 to 1167 mg kg–1, 1.80 to 415 mg kg–1, 200 to 2997 mg kg–1, 36.0 to 744 mg kg–1, 3.00 to 87.7 mg kg–1 and 0.09 to 2.10 mg kg–1, respectively. Diagnosis and Recommendation Integrated System (DRIS) norms were established for different nutrient expressions and were used to compute DRIS indices. As per DRIS indices, the order of requirement of nutrients in the region was found to be P > Mg > K > nitrogen (N) > B. Optimum leaf nutrient ranges as per DRIS norms varied from 1.64 to 2.79%, 0.36 to 0.52%, 0.37 to 0.75%, 0.89 to 1.97%, 0.35 to 0.63%, 0.89 to 1.50%, 3.10 to 13.9 mg kgâ^’1, 7.50 to 32.2 mg kgâ^’1, 35.0 to 91.1 mg kgâ^’1, 206 to 948 mg kgâ^’1, and 895 to 2075 mg kgâ^’1 for N, P, K, Ca, Mg, S, B, copper (Cu), zinc (Zn), manganese (Mn), and iron (Fe) respectively. On the basis of DRIS-derived sufficiency ranges, 14, 5, 11, 6, 6, 6, 8, 2, 3, 6, and 16% of leaf samples had less than optimum concentrations of N, P, K, Ca, Mg, S, B, Cu, Zn, Mn, and Fe respectively. The optimum ranges developed can be used as a guide for routine diagnostic and advisory purpose for balanced utilization of fertilizers.
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Date 2019-07-04T06:31:48Z
2019-07-04T06:31:48Z
2016-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/21124
 
Language English
 
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Publisher Not Available