Vol. 11, Issue 11 (2022)

Author(s):
Kushiram Kumawat, RM Pankhaniya and SK Parmar

Abstract:
A field experiment was carried out at the College Farm, N. M. College of Agriculture, Navsari Agricultural University, Navsari, Gujarat during kharif season of 2014. Experiment had ten treatments viz., T₁ - weed free up to 15 DAS, T₂ - weed free up to 30 DAS, T₃ - weed free up to 45 DAS, T₄ - weed free up to 60 DAS, T₅ - weed free up to harvest, T₆ - weedy up to 15 DAS, T₇ - weedy up to 30 DAS, T₈ -weedy up to 45 DAS, T₉ - weedy up to 60 DAS and T₁₀ - weedy up to harvest. The experimental design was Randomized Block Design and replicated three times. The least number of weed and dry weight of weed were recorded under the treatment T₅ (weed free up to harvest) closely followed by the treatment T₄ (weed free up to 60 DAS) and T₆ (weedy up to 15 DAS). The highest grain yield was under treatment T₅ i.e. weed free up to harvest being statistically at par with the treatment T₄ and T₆. The various weed management practices didn’t cause their significant influence on nutrient content in grain, straw and weed. The nutrient uptake by aerobic rice grain and straw was found higher under the treatment T₅ (weed free up to harvest) followed by T₄, T₆ and T₃. Significantly lower nutrient uptake by weeds was observed under the treatment of T₅ (weed free up to harvest).