Topramezone is a selective post-emergence herbicide used in maize belonging to the pyrazolone chemical class, acting as a 4-HPPD inhibitor.

• Pyrazolones: Topramezone belongs to the pyrazolone (benzoylpyrazole) family, inhibiting 4-hydroxyphenylpyruvate dioxygenase (HPPD) to cause bleaching.
• 2,6-dinitroanilines: Chemical group of pendimethalin and trifluralin.
• Nitrophenyl ethers: Chemical group of oxyfluorfen and nitrofen.
• Phenyl urea: Chemical group of isoproturon, diuron, and linuron.

In terms of the total natural greenhouse effect maintaining Earth's atmospheric temperature, water vapour and clouds contribute 60-70%, far exceeding carbon dioxide (~20-25%).

• Water vapour and clouds: The dominant natural greenhouse gas absorber, accounting for approximately 60% to 70% of Earth's atmospheric warming.
• Carbon dioxide: Contributes about 20-25% to the total natural greenhouse effect, though it is the primary driver of anthropogenic enhancement.
• Methane: Potent greenhouse gas but contributes 4-9% to total warming.
• Nitrous oxide: Contributes approximately 2-4% to the natural greenhouse effect.

Fertilizer consumption in Rajasthan averages approximately 60-65 kg/ha (specifically around 62 kg/ha during the relevant reference period), significantly lower than the national average due to extensive rainfed arid tracts.

• 133 kg/ha: Close to the national all-India average (~135-140 kg/ha), far above Rajasthan's state average.
• 102 kg/ha: Consumption in irrigated north-western districts, but not the statewide average.
• 62 kg/ha: Represents the official estimated average consumption for the state of Rajasthan.
• 42 kg/ha: Characteristic of extremely arid western desert districts.