With reference to 'Indian Ocean Dipole (IOD)' sometimes mentioned in the news while forecasting Indian monsoon, which of the following statements is/are correct? 
1. IOD phenomenon is characterized by a difference in sea surface temperature between Tropical Western Indian Ocean and Tropical Eastern Pacific Ocean. 
2. An IOD phenomenon can influence an El Niño's impact on the monsoon. 
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Which of the following practices can help in the water conservation in agriculture? 

1. Reduced or zero tillage of the land.

2. Applying gypsum before irrigating the field. 

3. Allowing crop residue to remain in the field. 

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Consider the following statements :
The nation-wide 'Soil Health Card Scheme' aims at 
1. Expanding the cultivable areas under irrigation. 
2. Enabling the banks to assess the quantum of loans to be granted to farmers on the basis of soil quality. 
3. Checking the overuse of fertilizers in farmlands. 
Which of the given statements is/are correct?