scholarly journals Studies on the Growth Phase and Effect of Fertilizer Application to Rice Plants in Malaya : IV. Seasonal changes of transpiration, dry matter production and water requirement and their varietal differences

1970 ◽  
Vol 39 (3) ◽  
pp. 350-354 ◽  
Author(s):  
Katsuo SUGIMOTO
Keyword(s):  
Growth Phase ◽  
Seasonal Changes ◽  
Dry Matter ◽  
Fertilizer Application ◽  
Water Requirement ◽  
Dry Matter Production ◽  
Varietal Differences ◽  
Rice Plants ◽  
Matter Production

Effects of Nitrogen, Phosphorus, Potassium and Magnesium on Growth of the Oil Palm

1972 ◽  
Vol 8 (4) ◽  
pp. 347-353 ◽  
Author(s):  
R. H. V. Corley ◽  
C. K. Mok
Keyword(s):  
Leaf Area ◽  
Oil Palm ◽  
Dry Matter ◽  
Fertilizer Application ◽  
Dry Matter Production ◽  
Matter Production ◽  
Oil Palms ◽  
Net Assimilation ◽  
Nitrogen Phosphorus ◽  
Bunch Yield

SUMMARYPotassium application appeared to increase dry matter production and yield of oil palms, primarily by increasing leaf area, while nitrogen increased both leaf area and net assimilation rate. Responses to phosphorus and magnesium were harder to interpret. Production of vegetative dry matter attained a fairly constant level at the higher rates of fertilizer application, while the ratio of bunch yield to total dry matter production was little affected by fertilizer treatments. The importance of these results for oil palm breeding, and their possible value in diagnosing fertilizer requirements, are briefly discussed.

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