Claim · model-written summary
Seven tonnes per hectare of farmyard manure increased soil organic carbon from 1.4 to 1.6 percent over eight years.
- Taxon
- RICE-WHEATt0
- Treatment
- application of seven tonnes farmyard manure per hectaree1
- Outcome
- organic carbon levelse1
- Direction
- increasede1
- Value
- from 1.4 to 1.6%e1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier
Verbatim
t0“RICE-WHEAT SYSTEMS IN BHUTAN”
e1“The application of seven tonnes farmyard manure per hectare to both the rice and the wheat crops over eight years increased organic carbon levels from 1.4 to 1.6%”
Title
G. B. CHETTRI; M. GHIMIRAY; C. N. FLOYD Experimental Agriculture 2003. doi:10.1017/s0014479702001163
Other claims from this paper (10)
- Intervention effect Farmyard manure had no effect on rice or wheat yield.
- Intervention effect An application of 34 kg P per ha to the rotation gave an economic yield increase in rice, only in the first four years.
- Intervention effect Phosphorus applied through farmyard manure was not adequate for rice.
- Intervention effect From the third year, green manuring replaced the effect of recommended N, P and K fertilizer in increasing rice yield.
- Intervention effect Green manuring had no effect on wheat yield.
- Intervention effect The recommended fertilizer application increased wheat yield.
- Intervention effect Green manuring increased soil total nitrogen and available potassium levels.
- Intervention effect Green manuring reduced soil base saturation.
- Observation After adjusting for transplanting date, there was no statistical evidence of a yield trend in rice or wheat over the experiment.
- Recommendation Farmers applying seven tonnes per hectare of farmyard manure can expect stable rice paddy yields.