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Authors:
Lim, T.M. | Narayanan, R.
Date: 20080402 |
20080402 | |
1972 | | | | | | |
Subject: PRRIM
Type: Article
Identifier: vital1:36704
Description: A rapid, simple method is described for estimating the area of rubber leaves from two measurement on the middle and one of the leaflets. The relationship between the area of a leaflet (A)and its lengt… More
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Authors:
Guha, M.M. | Narayanan, R.
Date: 20041202 |
20050128 | |
1969 | | | | | | |
Subject: PRRIM | Nutrition of hevea
Type: Article
Identifier: vital1:29951
Description: Changes with age in nitrogen, phosphorus, potassium, magnesium, calcium and manganese contents in leaves were studied using five clones of Hevea brasiliensis. Top-light leaves of six-year-old mature t… More
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Date: 20030923 |
20050221 | |
1973 | | | | | | |
Subject: PRRIM | Breeding and selection
Type: Article
Identifier: vital1:24639
Description: Yields of young trees and other characters associated with the size of the laticiferous system have been studied on eighty clones from different provenances. The means and coefficients of variation of… More
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Authors:
Narayanan, R. | Ho, C.Y.
Date: 20030923 |
20050221 | |
1973 | | | | | | |
Subject: PRRIM | Breeding and selection
Type: Article
Identifier: vital1:24364
Description: The relationship between yield and girth of nursery plants of trees within the same clone has been examined at two stages for eighty clones and found to conform to a linear expression. From 23 to 98% … More
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Date: 20030923 |
20050822 | |
1974 | | | | | | |
Subject: PRRIM | Breeding and selection
Type: Article
Identifier: vital1:24250
Description: Girth, number of latex vessel rings and plugging index are the important characters determining the yield of young rubber plants. These characters are unrelated and contribute independently to yield o… More
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Authors:
Narayanan, R.
Date: 20030923 |
20050218 | |
1970 | | | | | | |
Subject: PRRIM | Fertilisers and manuring
Type: Article
Identifier: vital1:24556
Description: The value of doable covariance analysis using pre-treatment yield and girth as simultaneous calibrating variates for improving the precision of post-treatment yield comparison in fertiliser trials of … More
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Date: 20030923 |
20050207 | |
1964 | | | | | | |
Subject: PRRIM | Effects of hevea
Type: Article
Identifier: vital1:23821
Description: In comparisons of the effects on the growth of Hevea of leguminous creeping cover plants, mixed grasses (Paspalum conjugatum and Axonopus compressus) and Mikania cordata, the high nitrogen status of t… More
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Authors:
Watson, G.A. | Narayanan, R.
Date: 20030923 |
20050202 | |
1965 | | | | | | |
Subject: PRRIM | Nutrition of hevea
Type: Article
Identifier: vital1:23836
Description: In one experiment sited on coastal alluvial clay the annual application of 4 Ib per tree of ammonium sulphate increased seed production of Hevea brasiliensis by 30% over a period of seven years, while… More
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Date: 20030923 |
20050207 | |
1963 | | | | | | |
Subject: PRRIM | Effects of hevea
Type: Article
Identifier: vital1:24340
Description: Ground covers of leguminous creepers, mainly Pueraria phaseoloides, showed variable response to phosphate fertiliser application depending on soil type. Response was particularly marked on soils with … More
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Date: 20030923 |
20050207 | |
1964 | | | | | | |
Subject: PRRIM | Effects of hevea
Type: Article
Identifier: vital1:23899
Description: In four large-scale experiments the use of leguminous creeping covers improved rates of tree growth when compared with the effect of non-leguminous covers. On fertile coastal alluvium the advantage wa… More
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Date: 20030923 |
20050207 | |
1964 | | | | | | |
Subject: PRRIM | Effects of hevea
Type: Article
Identifier: vital1:24357
Description: At two, three and four years after clearing from jungle and planting with rubber, much higher levels of nitrate-nitrogen and lower levels of organic carbon and of cations were found in bare soil than … More
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Authors:
Narayanan, R.
Date: 20030923 |
20050822 | |
1974 | | | | | | |
Subject: PRRIM | Planting techniques and management
Type: Article
Identifier: vital1:24328
Description: Estimates of soil heterogeneity have been calculated from some large-scale trials on Hevea clones. The mean heterogeneity coefficient varied between 0.3 and 0.8 for the different lattices when average… More
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Authors:
Narayanan, R.
Date: 20030923 |
20050111 | |
1968 | | | | | | |
Subject: PRRIM | Economics and statistics
Type: Article
Identifier: vital1:24057
Description: The value of girth as a calibrating variate for improving the precision of post-treatment yield comparisons is illustrated by means of a few manuring experiments. It is shown that covariance analysis … More
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Authors:
Narayanan, R. | Abraham, P.D.
Date: 20030923 |
20050822 | |
1976 | | | | | | |
Type: Article
Identifier: vital1:24292
Description: The variations in the plugging indices for individual trees and days have been examined using data on eleven clones covering four sites and three tapping systems. The variations did not show any consi… More
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Date: 20030923 |
20050111 | |
1967 | | | | | | |
Subject: PRRIM | Tapping systems
Type: Article
Identifier: vital1:24579
Description: Daily yields of three clones have been studied to assess their variations under the S/2.d/2.100 % system. The variations did not show any pattern with seasons or with the application of yield stimulan… More
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