1Department of Agronomy, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani-431 402, Maharashtra, India.
*Corresponding Author: S.U. Pawar, Department of Agronomy, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani-431 402, Maharashtra, India. Email: pawarsu7@rediffmail.com
Nutrient management is a prevalent agronomic practice enhancing soil fertility and crop productivity. It directly impacts weed growth through nutrient availability and indirectly intensifies resource competition, shaping weed community dynamics.
The long-term field experiment on nutrient management was initiated in 2006-07 at Long-term Fertilizer Experiment Research, VNMKV, Parbhani, Maharashtra, India. The experiment was laid out in randomized block design (RBD) with ten treatments comprising organic, inorganic and integrated nutrient management practices and three replications. This study on weed dynamics and weed seed bank was carried out in this experiment during kharif season of 2023 and 2024.
The results revealed that application of 100% NPK+FYM @5 tonnes ha-1 recorded the highest seed yield (2518, 2442 and 2480 kg ha-1) and straw yield ((3526, 3131 and 3329 kg ha-1) and was followed by treatment comprising of 150% NPK, while minimum seed yield was recorded with control followed by treatment with application of 100% N. The density of weed seeds decreased with increase in soil depth under all the nutrient management treatments. The total weed dry weight was higher in FYM @10 t/ha, 100% NP and 150% NPK while, lower weed dry weight was recorded in 100% N, 50% NPK and absolute control.
Long-term nutrient management, Weed seed bank, Weed dynamics
