Determination of maize yield response to npk fertilizer trial in perkera irrigation scheme
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DETERMINATION OF MAIZE YIELD RESPONSE TO NPK FERTILIZER TRIAL IN PERKERA IRRIGATION SCHEME PowerPoint PPT Presentation


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DETERMINATION OF MAIZE YIELD RESPONSE TO NPK FERTILIZER TRIAL IN PERKERA IRRIGATION SCHEME. Wanjogu R.K., Owilla B. P. O., Machungo , C. National Irrigation Board. BACKGROUND. Maize is the leading staple cereal crop in Kenya and an important crop in Perkerra for food and income

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DETERMINATION OF MAIZE YIELD RESPONSE TO NPK FERTILIZER TRIAL IN PERKERA IRRIGATION SCHEME

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Determination of maize yield response to npk fertilizer trial in perkera irrigation scheme

DETERMINATION OF MAIZE YIELD RESPONSE TO NPK FERTILIZER TRIAL IN PERKERA IRRIGATION SCHEME

Wanjogu R.K., OwillaB. P. O., Machungo, C.

National Irrigation Board


Background

BACKGROUND

  • Maize is the leading staple cereal crop in Kenya and an important crop in Perkerra for food and income

  • In Perkerra, yields have declined by 27% from to 30bgs/ac (6.75t/Ha) to 22bgs/ac (4.95t/Ha); annual loss of Kshs 108M

  • Low farm incomes has set off a chain reaction of socioeconomic problems-food insecurity, unemployment, etc

  • Low yields further lead to low irrigation water productivity, reduced irrigation cost recovery, and thus threaten Scheme sustainability

  • Low yields associated with poor crop nutrition

  • Need for routine monitoring of soil nutrient availability


Objectives

OBJECTIVES

  • Main objective

    • To determine the effect of NPK fertilizer on irrigated Maize crop performance in Perkerrairrigation Scheme

  • Specificobjectives

    1)To determine the effects of NPK fertilizers on maize yields in PIS

    2)To establish the levels of N, P, and K fertilizers for optimal maize crop yield in PIS


Methods

METHODS

  • Design: RCBD with 3 replications

  • Each nutrient was tested at 3 levels:

    • N0,N1, N20kgN/ha, 120kgN/ha/, 180kgN/ha

    • K0,K1,K20kgK20/ha, 30kgK20/ha, 60KgK20/ha

    • P0,P1,P20kgP205kg/ha, 60kgP205/ha, 90kgP205/ha


Treatments

TREATMENTS

  • Fertilizer combinations

  • Equivalent fertilizer rates

    • N1 = 522g Urea; P1= 600g SSP; K1= 100g MOP ; N2 =783g

    • Urea; P2 = 900g SSP and K2= 200g MOP

  • P & K basal; N in 2 splits, 30% at planting and 70% top-dressed at knee-high stage of plant growth

  • Spacing 75cm x 25cm.

  • Crop: Maize (DH04)


Data collection

DATA COLLECTION

i.Soil physical and chemical analysis before and after trial

ii.% Germination at 14 DAS

iii.Crop vigour

iv.Plant count at 14 DAS, 28 DAS & 56 DAS

v.Plant height

vi.50% flowering dates (silking and tasselling)

vii.Pest and disease incidences

viii.Maturity dates

ix.Grain yields at 12.5% MC


Results

RESULTS

Mean Stand counts for the different treatments was 37.0741±0.65162 LSD=1.33942,

Maximum SAT was attained in N1P1K0 though not significantly different (p=0.43046)

The least SAT was noted at N2P2K2 treatments combination


Results contd

RESULTS contd…


Results contd1

RESULTS contd…

  • Mean days to 50% silking was achieved at 64th day (LSD=0.91381) for all the treatments

  • There was no significant difference (p=0.430458) in number of days to 50% silking.

  • Mean tassling at 50% was attained at 62 day (LSD=0.39895).

  • There was no significant differences (p=2.2) days to achieving 50% tussling


Results contd2

RESULTS contd…


Effect of npk on m aize yield in pis

Effect of NPK on Maize yield in PIS

  • Mean yield for treatments was 4966.5 (LSD=274.653)

  • No significant yield differences (p=0.43) were noted in the yields.

  • Maximum yield was attained on N2P1K1while the least was noted on N2P1K2


Results contd3

RESULTS contd…


Conclusion and recommemdations

CONCLUSION AND RECOMMEMDATIONS

  • The study indicated no response to NPK

  • It was a first time trial

  • A repeat is recommended


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