INFLUENCE OF ORGANIC AND INORGANICFERTILIZERS ON GROWTH AND YIELD OFPOTATO (SOLANUM TUBEROSUM L.) INNYABIHU DISTRICT OF RWANDAWANDA
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Authors
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Prof. Antoine Karangwa
University of Rwanda
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Vedaste Ndungutse
The University of Rwanda
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Dr. Aloys Fashaho
University of Rwanda
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Dr. Sylvestre Habimana
University of Rwanda
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Dr. Jean d'Amour Manirere
University of Rwanda
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Vincent Nsengimana
University of Rwanda
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Narcisse Mulinga
University of Rwanda
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Claudette Imanishimwe
SNV
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Dr. Nyagatare Guilaume
University of Rwanda
Keywords:
potato productivity, Inorganic fertilizer, organic fertilizer, yield incrementAbstract
The objective of this study was to evaluate the response of different organic and inorganic nutrients on
physical growth and yield of potatoes in Nyabihu District. The experiments were conducted in farmer’s fields in Nyabihu
District during the agricultural seasons 2022 B (March - June 2022) and 2023 A (September 2022 – January 2023). The
experiment was laid out in Randomized Complete Block Design (RCBD) with six treatments: T1 (Control), T2 (NPK), T3
(Compost), T4 (FYM), T5 (Compost + NKP), and T6 (FYM + NPK) in three replications. Physical growth and yield of the
potato were evaluated. The collected data were subjected to ANOVA at 5 % level of significance and mean separation
with Least Significant Difference (LSD). There was a significant difference in potato growth and yield at P<0.05. Compost
combined with NPK had the highest influence on physical growth and yield followed by farm yard manure combined
with NPK in both seasons. The least was control preceded by NPK alone. Crops performed better in season 2023 A than
2022 B. Therefore, combination of organic and inorganic fertilizer synergically influence potato yield than when applied
individually and it should be given special attention to increase potato yield.
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