Yield, Nodulation, Nitrogen Uptake, and Powdery Mildew Disease by Pea (Pisum sativum L.) as Influenced by Applied Molybdenum and Iron

This was an investigation of powdery mildew disease in peas to test a hypothesis formulated on the probability of change in nitrogen fixation and nodulation due to applied molybdenum and iron. The objective of this field experiment was to work out the effect of various concentrations of molybdenum and iron on the productivity, modulation, and nitrogen absorption of pea plants (Pisum sativum L.) under two varieties namely Medawar-I and Zeena Park-I situated at Agriculture Research Station Swabi during the years 2011 and 2012. Initial rates of 25 N, 60 P2O5, and 60 K2O were applied randomly within full blocks with split-plot designs and replication. According to the results, the greatest yield and yield metrics, nodule counts, and nitrogen absorption were noted in the treatment plots when Fe 2.0 and Mo 0.50 kg ha-1 were administered concurrently for both kinds. Compared to the Zeena Park-I variety of pea, the Metawar-I variety showed much higher grain output, nodulation, and nitrogen uptake. This difference may have resulted from the variety with optimal treatments showed better performance. Instead of the plant’s ability to generate maximal modulation and uptake of nitrogen, the Medawar-I variety efficiently utilized applied nutrients for improved productivity. This difference may have resulted from the plant's ability to generate maximal modulation and uptake of nitrogen. Further, there was correlation made in the present study regarding the number of nodules and the nitrogen content of the two types of plants. During the experiment, it was proven that these two variables were directly proportional the rate at which the number of nodules that were produced increased as well as the rate of nitrogen accumulation in the plants. The fact that N concentration increases in a manner analogous to that of Fe concentration in plant leaves suggests that Fe was crucial to the pea crop. Deposition of nitrogen. The current research indicates that sufficient levels of iron and molybdenum are crucial for obtaining the highest possible yield, nodules, and nitrogen absorption in leguminous crops.