Treatment of K. alvarezii saps on Potatoes
produces 17% increase in Yield
An experiment using 11 different treatments of seaweed sap from seaplant Kappaphycus alvarezii were conducted. Results showed a increase in yield over the control of over 17%, including an increase in the percentage of medium and large sized tubers, and a decrease in the percentage of small-sized tubers.
Evaluation of Fertilizer Potential of Seaweed Saps on Potato
Materials and methods
The field experiment on potato was conducted soil which was described as sandy clay loam in texture having pH 5.0 and EC was non saline. The soils were deficient in available Mg, S and Zn and medium in N, high in P and K. The experiment was laid out in a Randomized Block design with 3 replications and 11 treatments.
Results and discussion
The highest tuber yield of 28.33 t/ha was recorded in the treatment T7 that consisted of a standard NPK + seaweed 10% K sap spray. The percentage of yield increase over control was 17.01% and 14.00% for the treatment. Grade wise, tuber yield (%) of potato recorded in each treatment showed a significant difference. The minimum small size tubers were recorded in this same treatment (T7 with a standard NPK + 10% K sap spray) at 31.42. As would be expecte, medium and large size tubers yield were maximum in treatment T7, also at 42.44. Tuber yield per plant showed maximum values in treatment T7 (100% NPK + 10% K sap). The treatment T3 with low tuber yield per plant might be attributed to the lesser dose of fertilizer application leading to low availability of nutrients to the plants. The increasing concentrations of seaweed sap may lead to more availability of nutrients to the plant that might have increased the grade wise tuber yield and total yield per plant.
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