A healthy plant is essential to sustain productivity. Plant
health is dependent on the nutritional status of the soil. A constant supply of
water is required to move nutrients and support growth. Nutrition should be
closely monitored with regular soil and leaf
analysis. Key steps in plant nutrition and irrigation include regular soil
sampling, correct fertilizer use and timely irrigation practices. Sampling
requires the use of a trowel and putting the soil in a plastic bag. Pick the
soil from different points in the farm using a W or Zigzag pattern. Sample at
the right time i.e. not immediately after fertilizer and manure application, or
when the ground is too dry or too wet.
Sample at the right depth and submit the soil sample for
analysis immediately. The results will indicate the required nutrition
interventions on your farm. The required crop nutrients are classified into
macro and micronutrients meaning required in large and small quantities
respectively. The macronutrients required by crops are:-
·
Phosphorus(P) is required at sowing or
transplanting
·
Nitrogen(N)is required for growth and
development
·
Potassium(K) is essential for flowering and fruiting
Micronutrients required by crop include zinc, iron, calcium,
manganese and magnesium.
All these elements can be supplied from a combination of
manure or manure and inorganic fertilizer. Add manure or compost to your farm
regularly for good crop nutrition.
