Missing element trial: an effective tool for diagnosing most limiting nutritional problem for high yield in intensive wetland rice farming [in Bangladesh].
1986
Bhuiyan N.I. | Kabir M.M. | Panaullah G.M.
A long-term field experiment using the missing element approach was initiated to identify the most limiting nutrients for high yield goods under intensive wetland rice culture in Bangladesh. Nitrogen, Phosphorus, potassium, sulphur and zinc fertilizers were studied. It was conducted on a permanent layout at the Bangladesh Rice Research Institute farm, Joydebpur, during the 1985 boro season. In the boro season, the highest or nearly similar grain and straw yields were produced where all elements were present, or where only phosphorus or zinc were missing. The result was the same in the t. aman season with the addition of the treatment missing potassium. Yield reduction was significant in the boro season when nitrogen, sulphur and potassium were missing from the complete treatment. During the t. aman season, only the absence of nitrogen and sulphur treatments caused significant yield reduction. The level of nutrient contents in and uptake by grain and straw at maturity generally were higher in treatments with nitrogen and sulphur. Nitrogen and sulphur were considered to be the most limiting nutrients in achieving the high yield.
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