PRODUCTIVITY OF SOYBEAN (Glycine max (L.) Merrill) AS INFLUENCED BY COW DUNG, STAND DENSITY AND PLANTING PATTERN

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Abstract:

The productivity of soybean as influenced by cow dung, stand density and planting pattern was investigated under field condition at the Institute for Agricultural Research farm in Ahmadu Bello University, Samaru and at farmers field Hayin Gada Giwa Nigeria. Treatments consisted of four rates of cow dung (0, 2, 4 and 6 t ha-1), two stand densities (3 and 6 plants per stand) and two planting patterns (single and double row planting). Randomized complete block design with three replications was used. The result showed that increase in cow dung to 2 t ha-1 6 significantly increased total dry matter, grain weight and yield per hectare at both locations while increase up to 6 t ha-1 significantly increased plant height 4WAS at Samaru, number of branches 12WAS at Samaru, leaf area index 4WAS at Samaru. Generally plants grown at 6 plants per stand were taller and had larger leave area values as compared with those planted at 3 seeds per stand. Plants grown at 3 plants per stand and supplied with 6 t ha-1 cow dung manure on double row produced taller plants, while 3 plants per stand receiving 6 t ha-1 cow dung manure on single row produced more leaves. Double row planting produced taller plants, produced more branches 8WAS at Giwa, total dry matter 4WAS at Samaru and had the highest LAI value at both location. Highly significant and positive correlation (P=0.01) was observed between soybean yield and number of leaves, number of pods per plant , weight of pods per plant and grain weight per plant at both locations. In conclusion 6 plants per stand supplied with 2 t ha-1 gave the highest grain yield of soybean however when the regression analysis was carried out 4.5 t ha-1 could be recommended for high yield .

PRODUCTIVITY OF SOYBEAN (Glycine max (L.) Merrill) AS INFLUENCED BY COW DUNG, STAND DENSITY AND PLANTING PATTERN

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