Q120: A lateral has 12 sprinklers spaced 14 metres apart. The... - Soil and Water Conservation & Irrigation and Drainage Engineering - ICAR AIEEA PG 2024 - Agricultural Engineering and Technology | Agrigyan

Calculation of fertilizer application per sprinkler setting:

• Area covered by each sprinkler \(A_s = S_l \times S_m\), where: - Sprinkler spacing on the lateral \(S_l = 14\text{ m}\) - Lateral spacing on the main line \(S_m = 20\text{ m}\) \[A_s = 14\text{ m} \times 20\text{ m} = 280\text{ m}^2\]
• Number of sprinklers on the lateral \(N = 12\). Total area covered per setting \(A_{\text{setting}} = 12 \times 280\text{ m}^2 = 3360\text{ m}^2\). 3. Convert area into hectares: \[A_{\text{setting}} = \frac{3360}{10,000}\text{ ha} = 0.336\text{ ha}\]
• Fertilizer dose recommended = \(80\text{ kg/ha}\). Amount of fertilizer per setting = \(\text{Dose} \times A_{\text{setting}} = 80\text{ kg/ha} \times 0.336\text{ ha} = 26.88\text{ kg} \approx 27\text{ kg}\).