LEAF NUTRIENT LEVELS OF STRAWBERRIES (CV. TUDLA) IN RELATION TO CROP YIELD

2002 ◽  
pp. 447-450 ◽  
Author(s):  
D. Almaliotis ◽  
D. Velemis ◽  
S. Bladenopoulou ◽  
N. Karapetsas
Keyword(s):  
Crop Yield ◽  
Nutrient Levels ◽  
Leaf Nutrient Levels

scholarly journals The development of a mathematical concept to interpret the relation between plant composition and crop yield

1969 ◽  
Vol 37 (4) ◽  
pp. 249-264
Author(s):  
Bernardo G. Capó ◽  
George Samuels
Keyword(s):  
Puerto Rican ◽  
Crop Yield ◽  
Quantitative Relationship ◽  
Mathematical Concept ◽  
Specific Information ◽  
Mathematical Equation ◽  
Plant Composition ◽  
Nutrient Levels ◽  
Plant Yields ◽  
Using Data

Although much work has been done on the relation between the composition of a plant and its yield, very little specific information exists about the quantitative relationship between plant yields and plant composition. Using data from hegari sorghum grown at various nutrient levels on leading Puerto Rican soils, a general mathematical equation was established relating the sorghum yield to its nutrient composition.

Nutrient status of sugar cane in relation to leaf nutrient concentration

1968 ◽  
Vol 8 (34) ◽  
pp. 606 ◽  
Author(s):  
ICR Holford
Keyword(s):  
Sugar Cane ◽  
Field Experiments ◽  
Leaf Tissue ◽  
Growth Period ◽  
Nutrient Status ◽  
Maximum Growth ◽  
Nutrient Concentrations ◽  
Ratoon Crop ◽  
Nutrient Levels ◽  
Leaf Nutrient Levels

The nitrogen, phosphorus, and potassium requirements of sugar cane were studied in relation to the concentration of these elements in the leaf tissue of three varieties of sugar cane grown commercially in Fiji. Percentage yields of sugar cane in fertilizer field experiments were highly correlated with leaf nutrient levels in the control plots, provided leaf sampling was carried out during the maximum growth period of mid- January to mid-May. For each nutrient there was a marginal zone of leaf concentration below which crops always gave significant yield responses to applied nutrients and above which crops failed to respond. Marginal zones for crops sampled during mid-March to mid-May were 1.4-2.0 per cent for nitrogen, 0.13-0.21 per cent for phosphorus, and 0.9-1.5 per cent oven dry leaf for potassium. Within the deficient range of leaf nutrient concentrations there was little relationship between optimum rates of fertilizer required to correct the deficiency and leaf nutrient levels of unfertilized cane. Because of the lateness of sampling, any indication of fertilizer requirement would only be applicable to a subsequent ratoon crop.

Effect of girdling on leaf nutrient levels in pear cultivars Patharnakh and Punjab Beauty

2015 ◽  
Vol 72 (3) ◽  
pp. 319
Author(s):  
Damandeep Singh ◽  
W.S Dhillon ◽  
N.P. Singh ◽  
P.P.S. Gill
Keyword(s):  
Nutrient Levels ◽  
Leaf Nutrient Levels
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