Science in New Guinea, Volume 11University of Papua New Guinea, 1985 - Agriculture |
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Page 87
... jassid Amrasca devestans Distant . Results showed that the amount of jassid damage had a direct effect on the yield , survival and total plant weight . No correlation was found between numbers of jassid and jassid damage , and the ...
... jassid Amrasca devestans Distant . Results showed that the amount of jassid damage had a direct effect on the yield , survival and total plant weight . No correlation was found between numbers of jassid and jassid damage , and the ...
Page 89
... jassid damage to plants was recorded according to the following scale : RESULTS 0 = total defoliation due to jassid attack 1 = more than 50 % of leaves with jassid burn 2 = 25-50 % of leaves with jassid burn 3 = 5-25 % of leaves with jassid ...
... jassid damage to plants was recorded according to the following scale : RESULTS 0 = total defoliation due to jassid attack 1 = more than 50 % of leaves with jassid burn 2 = 25-50 % of leaves with jassid burn 3 = 5-25 % of leaves with jassid ...
Page 91
... Jassid Damage 8 O Figure 1 Effect of jassid.attack on yield O 0 8 ooooo ∞。。 0000 O 00 000 00 09 00 0800 0 O y = 0.09xe r = 0.775 01.14x 4 + ( 78 df ) 5 0 1 2 3 Decreasing Jassid Damage Figure 2 Effect of jassid attack on plant ...
... Jassid Damage 8 O Figure 1 Effect of jassid.attack on yield O 0 8 ooooo ∞。。 0000 O 00 000 00 09 00 0800 0 O y = 0.09xe r = 0.775 01.14x 4 + ( 78 df ) 5 0 1 2 3 Decreasing Jassid Damage Figure 2 Effect of jassid attack on plant ...
Contents
Ascorbic acid content of some Papua New Guinean | 1 |
The potential use of modern geodetic methods for geophysical | 19 |
A short note on yields of forty one varieties of aibika | 39 |
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ABSTRACT acid analysis animals appears areas attack Australian chemistry cognitive collected common concentrations concrete contain course cover crops damage Daru Department detail determined distribution Education effects examination Figure fish Fly River foraminifera forest formal fronds fruit garden geodetic given Grade ground High School hospital important infection Island jassid Journal laboratory length less living Manus material mean measured mercury methods Moresby natural Nautilus noted observations obtained occur operations Papua New Guinea period plants pompilius Port positioning possible prepared present problems Province published questions range reasoning recorded REFERENCES Research River samples Science separate shell slender species specimens Station survey syllabus Table teachers teaching Technology terebrids topics traditional Transferred trees University University of Papua varieties vegetables yield