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P. A. Abdul Bari , G. N. Gupta

Abstract

A nursery experiment was conducted to study the influence of foliar sprays of macro and micro-nutrients on p.curibaea and P.patula seedlings in red soil and shola soil mediums. Four sprays of 1% solution of 10 macro and micro nutrients were done at an interval of one month. Maximum height increment was observed due to Zinc in P.patula and due to magnesium in P caribaea. When no treatment was given,seedling growth was significantly better on shola soil than the red soil.

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P. A. Abdul Bari , K. G. Prasad

Abstract

Field trials of P. caribaea and P. oocarpa were undertaken from 1979 onwards under different Silvoclimatic zones in Tamil Nadu. Performance of P. caribaea and P. oocarpa are evaluated in relation to soil properties of each zone and comparative study is discussed in this paper, after analysing the data statistically.

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P. A. Abdul Bari , K. G. Prasad

Abstract

Pinus caribaea provenance FRI-649 was grown at Kolli Hills and Perumalmalal during 1979 and at Mahendragiri and Gudalur during 1981. Pinus oocarpa provenance FRI-650 was raised at Perumalmalai and Koill Hill during 1979, and provenances FRI-760 and 761 were raised at Koill Hill, Perumalmalai and Gudalur during 1979. The study has revealed that site and soli factors play a major role in the suitability of tropIcal pine species and their provenances. Solis of sandy loam texture seem to be ideal for raising these provenances, while solis of heavier texture seem to retard the growth after tbe 3rd year. The provenances grew well under low fertility conditions and a moderately acidic soli environment.

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R. L. Chowdhary , P. A. Abdul Bari , K. G. Prasad

Abstract

Trials with tropical pines were taken up by the Silvicultural Research Wing of the Tamil Nadu Forest Department from 1962 onwards. This paved the way for the introduction of Pinus patula. Sch.& Cham, on a plantation scale in the Nligiris in 1967 and in the Kodaikanal Hills from 1968. Species-cum-provenance trials of tropical pines were initiated during 1979 in Tamil Nadu by the Tropical Pine Research Centre,. Kodaikanal. Initial observations reveal that Pinus patula and Pinus pseudostrobus are ideal species for the higher altitudes. (above 2,000 m M S.L). P. oocarpa performed better at middle altitudes (between 1,000-1,500 m above M S L.). Among the Pinus patula provenances, F.R.I. No. 511 from Malawi and F.R.I. No. 619 from Tanzania are superior to the other provenances. Provenance F R.I. No. 516 from Nicaragua has shown better performanc, among P. pseudostrobus provenaces, followed by proveoance, F.R I No. 515, from Guatemala. Among P. oocarpa proveoaoces, F.R.I. No. 625 from La Campa. Honduras. F.R.I. No. 624 (LaCampa Honduras) and 468 (from Guatemala) were superior over others. Pinus caribaea provenances F. R.I. No. 649 from Poptum Guatemala were superior over others. Further observations are continuing.

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