Agro-climatic regions Replicates* Place Region code Soil type No.of sites
Bhabar and Tarai Zone of Uttar Pradesh (28°22'N latitude 79°25'E longitude) 1 Pantnagar Bht Clayey loam 5
Western Plain Zone of Uttar Pradesh (28°40'N latitude 77°43'E longitude) 3 Dadri
Gajroula
Ghaziabad
Wep 1
Wep 2
Wep 3
Loamy sand
Sandy loamy
Silty loamy
5
5
5
Mid-Western Plain Zone of Uttar Pradesh (28°02'N latitude 79°07'E longitude) 1 Budaun Miw Clayey loam 5
Gird Zone of Madhya Pradesh (21°14'N latitude 81°38'E longitude) 1 Chambal Giz Light alluvium 5
Malwa Plateau Zone of Madhya Pradesh (22°05'N latitude 82°09'E longitude) 1 Pachmari Mal Medium 5
Semi-Arid Eastern Main Zone of Rajasthan (26°55'N latitude 75°48'E longitude) 1 Jaipur Samz Loamy sand 5
South Gujarat Zone of Gujarat (23°02'N latitude 72°35'E longitude) 1 Ahmedabad Sgz Clayey 5
Western Zone of Haryana (28°54'N latitude 76°35'E longitude) 2 Rohtak
Gual-Pahiri
Whz 1
Whz 2
Fine loam
Alluvium
5
5
*Within each combination of the agro-climatic region we selected five sites. Hence, for each of these regions sampled only once, there were five sites. For two of the agro-climatic regions, we replicated twice or thrice in each of the agro-climatic categories.
Table 1: Distribution of the 55 study sites in relation to agro-climatic regions of India.