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Haifa Blog

27Jan2018
Increasing rice yield with better precision

The findings in this trial illustrated that Multicote™ Agri (4) 44-0-0 (50% coated urea) provided the plant's nutrition needs, when N demand during tillering is increasing

 Description
Crop/Cultivar & Growing methodRice
AreaItaly
ObjectivesThe main goal of this experiment is to evaluate the efficiency of different ratios of coated/uncoated urea blends, in pre-sowing application, and the optimum level of N, according to the expected yield.
Haifa product + formulaMulticote Agri™ Coated Urea, 4 months (blend of coated and uncoated urea)
Report date2010
Type of partner’s businessTrial station

Methods and Materials

Experimental planFully randomly
Repetitions3
TreatmentsTreatmentN Kg/Ha
Farmer's practice (3 applications: pre sawing, sawing and late spring time)Total-147
Multicote™ Agri, Coated Urea (4) 44-0-0 (50% coated) – single application: pre sawing117
Multicote™ Agri, Coated Urea (4) 44-0-0 (30% coated) – single application: pre sawing117
Multicote™ Agri, Coated Urea (4) 43-0-0 (70% coated) – single application: pre sawing117
Application methodsBase dressing
Sowing/Transplanting dateApril 2010
Harvest dateAutumn 2010
Soil characteristicsLoamy soils with poor infiltration rate
Grower's current fertilization practiceTimingTreatmentEquivalent to N application
Pre sowing20-30 t/ha of slurry90-120kg/ha
Sowing time150 kg/ha of 8-20-2412 kg/ha
Late spring time (May)400 kg/ha of Potassium chloride 
Total N applied with FP was 147 kg/ha
Irrigation methodDrippers

Results

General resultsTreatmentNumber of ears/sqmSignificanceProduction MT/ha
Multicote™ Agri, Coated Urea (4) 44-0-0 (50% coated)368.5a10.92
Multicote™ Agri, Coated Urea (4) 43-0-0 (70% coated)301.2b8.53
Multicote™ Agri, Coated Urea (4) 44-0-0 (30% coated)264.7b6.42
FP201.5c6.99

Conclusions

SummaryThe findings in this trial illustrated that Multicote™ Agri (4) 44-0-0 (50%) provided the plant's nutrition needs, when N demand during tillering is increasing. This is a crucial time as in this early stage the effect on the quantity and quality of the grain is big.

Yield is strictly linked to the number of ears and the Multicote™ Agri (4) 44-0-0 (50%) seems to be able to satisfy the plant N demand during the entire rice cycle and so to synchronize the nutrients release pattern with the plants uptake.

In conclusion, results achieved from this trial affirm that the ratio of Multicote™ Agri (4) 44-0-0 (50%) is the best solution to obtain an increase of rice yield and to optimize the agricultural practices based on pre-sowing applications of all the nutrients demand, calibrated on the specific N removed, without substantially depleting the soil fertility.

*The results raise another important issue:
In the FP treatment, with 147 kg N/ha, and with low yield (versus 117kg that gave the highest yield), N must have been leached or evaporated, but for sure not consumed by the plants.

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