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Forum Pasca Sarjana
Published by Institut Pertanian Bogor
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Core Subject : Education,
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Articles 2 Documents
 1 
Search results for , issue "Vol. 16 No. 1 (1993): Forum Pascasarjana" : 2 Documents clear
The Genetic Estimation of Fruit Component Parameters of Seven Coconut Populations Without a Progeny Test Dwi Asmono; Alex Hartana; Edi Guhardja; Sudirman Yahya
Forum Pasca Sarjana Vol. 16 No. 1 (1993): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2008.172 KB)

Abstract

Heritability of fruit characters, such as fruit weight, husk weight, husk thickness, sheal weight, endosperm (water) weight, albumen weight, copra weight, oil content, fruit length and ftuit width. have been estimated on seven coconut populations. The results showed that most of the fruit components of Malayan Red Dwarf (MRD) and Malayan Yellow Dwarf (Mm)had relatively high heritability (>0.80), except fruit weight of MRD (0.74) and albumen weight of MYD (0.78). On the other hand, the heritability of those characters in tall populatidns varied between population. All of fruit characters on Polynesian Tall (PYT) and Seruwai Tall (SAT) had relatively high heritability (>0.80). On West African Tall (WAT), most Of the heritability of the fruit characters were relatively high (>0.80). except husk weight (0.75). endosperm weight (0.79) and oil content (0.41). Heritability of seven characters of Bali Tall (BLT) were relatively high, but those of three characters were relatively low; i.e. husk weight (0.52). fruit width (0.56) and husk thickness (0.71). Three fruit characters of Rmnell Tall (RLT) shown higher heritability. those are husk thickness (0.87), endosperm weight (0.92) and fruit length (0.90).
Prediction of runoff, sediment yield and their quality using ANSWERS model at Batujai reservoir area, West Nusa Tenggara Gatot Irianto; Hidayat Pawitan; . Soedarsono; H. Soewardjo
Forum Pasca Sarjana Vol. 16 No. 1 (1993): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (796.108 KB)

Abstract

The possibility of ANSWERS model application for predicting runoff and sediment yield is discussed in this paper. Three types of rainfall duration (e.i. 6; 8 and 10 hours) with three amount of total rainfall of 100; 200 and 300 mm and two different systems consistink of four kinds of land use were used for simulating runoff and sediment yield. The result showed that the runoff initiation was identified at 189 minutes from the start of rainfall when the amount of rainfall total was 200 mm with 8 hour duration (about 0.0001 inch/hour). The initial sediment yield was shown to be about 0.45 kg at 188 minutes from the begining of rainfall when rainfall total w+ 300 mm with 6 hour duration. Actual runoff and maximum sediment yield were recorded about 0.0017 inchlhour and 12.000 kg respectively. The land use which were considered as potential for erosion protection were mixed gardpn and wet rice. The considered land use would reduce runoff and sediment yield about 50% than traditional land use. The type of output indicates that ANSWERS model is promising for predicting runoff and sediment yield.

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