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Fertilizer Field Trial
Introduction:
The purpose of this study was to determine the soil nutrients available at SAKA
(experimental site) for the growth of pechay vegetable. Soil fertility has a dramatic
impact on the profit equation because the lack of fertility limits production. Pechay
requires at least some major nutrients for growth and reproduction. A deficiency in any
one of those nutrients will reduce yield. Most of those nutrients are obtained from the
soil. According to Duke (1978), only light applications of fertilizer are justified, as 450–
675 kg/ha of 4–12–4.
The primary plant nutrients (nitrogen, phosphorus, and potassium) are the most
important in Pechay production in terms of amounts required and frequency and
magnitude of plant response.
Objective of the study
To determine the soil nutrients available at SAKA (experimental site) for the
growth of pechay vegetable.
Materials and Methods
Materials:
240 seedlings of pechay vegetable; hoe for tillage and soil manipulation
operation; transplanting trays; recording book; urea fertilizer, phosphate fertilizer and
complete fertilizer.
Methods:
The trial was designed to take advantage of the highly uniform growing
conditions during transplanting, the seedlings planted has relatively uniform height and
leaf width. The treatments were randomly assigned to the each experimental unit.
The experiment was replicated three times.
Experimental unit
REPLICATE 1
R1T3 R1T0 R1T1 R1T2
REPLICATE 2
R2T1 R2T2 R2T3 R2T0
REPLICATE 3
R3T2 R3T3 R3T0 R3T1
Treatments
T0 – Control
T1 – Urea (46-0-0)
T2 – diammonium phosphate (16- 45 – 0)
T3 – Complete (14-14-14)
Replicates
R1 – Replicate 1
R2 – Replicate 2
R3 – Replicate 3
COMPOSITION OF FERTILIZER USED
PICTURES
Phosphate fertilizer16- 45 - 0
COMPLETE FERTILIZER14-14-14
UREA46-0-0
Potassium fertilizers was not available, very scarce so I made do with (16-46-0)
Results
REPLICATE 1
RIT3 R1T0
R1T1 R1T2
REPLICATE 2
R2T1 R2T2
R2T3 R2T0
REPLICATE 3
R3T2 R3T3
R3T0 R3T1
Experimental plot
DISCUSSION
COMPARING VERTICALLY THE EFFECTS OF THE TREATMENTS ON THE VEGETABLE ON THE THREE REPLICATION
Column 1 Column 2 Column 3 Column 4R1TI R1T2 R1T3 R1T0
R2T1 R2T2 R2T3 R2T0
R3T1 R3T2 R3T3 R3T0
The high yield response of pechay to phosphate and the comparatively lower
yield response to Nitrogen were mainly caused by the fertility status of the soil.
Considering column 1 with the addition of Urea as treatment, the deficiency of
Phosphorus and potassium can be observed, from the picture at column one, the pechay
response has dark green color, Stalks short and thin, new growth is weak and stunted.
Phosphorus is important for structure and function of nucleic acids and energy molecules,
so the plant will show poor flowering and fruiting. Leaf tips and edges looked burned and
this shows the deficiency of potassium
Considering column 2 where the treatment used was diammonium phosphate (16-
45 – 0), yellowing at the tip and the edge of the leaves shows the potassium deficiency.
Column 3 shows good response and highly good yield. The treatment applied was
complete fertilizer (14-14-14). Column 4 is control, no treatment applied. The yield is
relatively low, stunted and the plant heights were short compared to others.
The result shows that the soil at SAKA has lower amount of required nutrients
(NPK) which is required for the growth of pechay vegetable. Higher response and yield
were observed using complete fertilizer that supplied all the nutrients (NPK).The yield
using phosphate fertilizer (16- 45 – 0) was also high since relatively amount of Nitrogen
and higher percentage of Phosphorus were supplied.
For grower who wishes to plant pechay or other vegetable at SAKA, it is
recommended that complete fertilizer should be used to obtain optimum high yield.
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