plant-science-natural-medicine-2018-posters

Page 58

allied

academies

Journal of Agricultural Science and Botany | Volume: 2

November 15-16, 2018 | Paris, France

Plant Science

Natural Products,Medicinal Plants and Traditional Medicines

International Conference on

Joint Event

Soil fertility status and yield trends in the rice-Wheat system in Nepal

Bhaba P Tripathi

International Rice Research Institute (IRRI), Nepal

arming systemofNepal is the integrationof forestry, livestock

andcropproduction.Leaflittersarecollectedfromtheforestry

and put as bedding materials in the cattle shed and mixed with

cattle manure and urine. The decomposed Farm Yard Manure

(FYM)/compost are applied in the crop field and incorporated

in the soil by plowing. Then the crops are planted in the field.

In recent years, the livestock numbers are decreasing due to

scarcity of labors working in the agricultural fields, because they

are going out of the country for jobs and are migrating to cities

and towns. Therefore, use of chemical fertilizers is increasing

in major crop growing area as compared to organic fertilizers.

Comparing the soil fertility status of five development regions

of Nepal, soil pH is dominated by acidic in nature except for

Far-Western Development Region. The organic matter content

of the majority of samples from Eastern Development and Far-

Western Development Region was very low while the organic

matter of the other regions was low to medium. The nitrogen

content also ranged from low to medium across all the Regions.

The status of phosphorus and potassium are low in Eastern

Regionwhereas low to high in other Regions. The average status

of soil nutrient contents is declining throughout the nation, but

the rate of decline is higher in the eastern part of the country.

Long-term soil fertility experiment on rice-rice-wheat system in

carried out in Bhairahawa, Nepal showed a sharp decline in rice

yields inminus phosphorus (P) treatment in normal season rice,

whereas in early rice, it was almost zero. Wheat yield declined

in both P and potassium (K) missing plots. The application of P

and K fertilizers partially recovered in P and K deficient plots.

Plant science & Natural Medicine 2018, Volume 2

DOI: 10.4066/2591-7897-C1-003