Effect of fertilizer and inoculation on the growth and yield of soybean cv. Williams-82 in pot culture
2004
Achakzai, A.K.K. | Kayani, S.A. (Balochistan Univ., Quetta (Pakistan). Det. of Botany)
A pot culture experiment in response to different levels of added N fertilizer on soybean cv. Williams-82 was conducted in clay loam soil under the climatic conditions of Quetta. Fertilizer treatments were applied at the rate of zero (control); 23; 25; 50; 75; 100 and 125 kg N/ha plus a constant dose of 60 kg P2O5/ha and 30 kg K2O/ha in all treatments (except control). These seven fertilizer treatments were applied to both non-inoculated and inoculated pot culture crop. Results showed that nodules were found to be absent in both set of experiments which could be indirectly attributed to either sufficient level of soil NO3 (5.10 mM) or deficient level of total Fe (8.25 ppm) and Cu (below detection limit) or might be directly due to any other edaphic or climatic factors). Results also showed that in general petiole length, middle leaflet area, plant height, yield, 100 seed weight (except inoculated fertilized), total number of pods/plant (except non- inoculated fertilized) and pod both set of experiment are significantly different (P greater than 0.05) as compared with their respective control treatment. While remaining yield attributes viz., one-seeded, two-seeded and three-seeded pods are found as non-significantly different in response to both fertilizer and inoculum treatments. Results further revealed that pots receiving N fertilizer without inoculum mathematically out-yielded (1718 kg/ ha) in fertilizer dose of 100+60+30 kg NPK/ha, but inoculated pots out- yielded (1912 kg/ha) in fertilizer dose of 125+60+30 kg NPK/ha It was also revealed that all growth parameters and most of the yield attributes exhibited significant positive correlation with yield. However, number of seedless and one-seeded pods also exhibited significant but negative association with yield.
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