Contents preface (VII) introduction 1—37

Table 1.3 Comparison of average foodgrain yields for unirrigated and irrigated lands (4)

					State				Period														Yield, Tonnes/Hectare
																														Unirrigated												Irrigated
																																								Tubewell			Canal			Tank
		Punjab		1977–79	1.08					5.46				3.24									–
																				1963–65	0.75					3.06				1.18									–
																				1950–51	0.37					1.75				0.94									–
		Haryana		1977–79	0.38					5.74				2.39									–

(Contd...)

4																																	IRRIGATION AND WATER RESOURCES ENGINEERING
					State										Period														Yield, Tonnes/Hectare
																														Unirrigated												Irrigated
																																								Tubewell					Canal					Tank
		Andhra Pradesh								1977–79	0.42					5.69			3.43				1.96
																				1957–59	0.47					3.11			2.27				1.35
		Tamil Nadu								1977–79	0.49					6.53			2.60				2.33
																				1964–66	0.61					4.00			2.14				2.08
																				1956–58	0.66					3.78			1.69				1.86