Science in New Guinea, Volume 11University of Papua New Guinea, 1985 - Agriculture |
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Page 87
... jassid damage had a direct effect on the yield , survival and total plant weight . correlation was found between numbers of jassid and jassid damage , and the reason for this No was apparently related to the method of sampling jassid ...
... jassid damage had a direct effect on the yield , survival and total plant weight . correlation was found between numbers of jassid and jassid damage , and the reason for this No was apparently related to the method of sampling jassid ...
Page 89
... jassid damage to plants was recorded according to the following scale : 0 = 1 = 2 = total defoliation due to jassid attack more than 50 % of leaves with jassid burn 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 : 0 = 1 = 2 = total defoliation due to jassid attack more than 50 % of leaves with jassid burn 25-50 % of leaves with jassid burn 3 = 5-25 % of leaves with jassid ...
Page 90
... jassid numbers and recorded damage indicated no significant correlation ( r 0.028 , df 78 ) , the likely reason for this is given below . Strong correlations existed = 0.775 *** , df = = between jassid damage and total yield ( r 78 ) ...
... jassid numbers and recorded damage indicated no significant correlation ( r 0.028 , df 78 ) , the likely reason for this is given below . Strong correlations existed = 0.775 *** , df = = between jassid damage and total yield ( r 78 ) ...
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 aibika Alveolinella analysis animals apertural face areas ascorbic acid attack Australian barramundi biology bracken Calappa Calophyllum Chemical chemistry course cognitive demand cognitive development collected concrete crabs crops curricula curriculum Daru Department Ecology fish Fly River foraminifera forest freshwater fronds fronds per square garden gastropods genera geodetic Grade 12 grassland hydrographic infection jassid damage Journal Kiunga laboratory Lake Murray larger foraminifera length Manus Manus Province material methods Motupore Island Mount Hagen National Capital District National High School Nautilus pompilius P.O. Box paper Papua New Guinea plants Port Moresby predation Province provincial high school Pteridium quoyi Research ridges samples satellite scrobiculatus Shayer shell slender terebrids species specimens square metre survey syllabus Table Tanon Straits taro teachers Terebra tertiary tidal topics Transferred from Keravat trees University of Papua University of Technology varieties vegetables Vermeij vitamin Waigani wightianum yarrabense yield