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Nitrogen response and water use efficiency of sweet sorghum cultivars

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Title Nitrogen response and water use efficiency of sweet sorghum cultivars
 
Creator Sawargaonkar, Gajanan
 
Contributor Patil, Mukund
Wani, Suhas
Pavani, E.
Reddy, Belum Venkata Subba
Marimuthu, Subramanian
 
Subject green stalk yield
juice yield
potential ethanol yield
nitrogen use efficiency
rainfed
 
Description Sweet sorghum [Sorghum bicolor (L.) Moench] is a biofuel crop, which can be grown under tropical rainfedconditions without sacrificing food and fodder security. Three sweet sorghum cultivars (CSH 22 SS, NTJ2 and ICSV 93046) with two row spacings (60 and 45 cm) and six nitrogen levels (0, 30, 60, 90, 120, and150 kg ha−1) were grown on Vertisols during three post rainy (November to April) seasons at the ICRISATcenter farm in Patancheru, India. The results showed that the row spacings (60 or 45 cm) had no influenceon performance of the cultivars. Sweet sorghum hybrid CSH 22 SS produced the highest green stalk yield(45.4 Mg ha−1) and grain yield (2.33 Mg ha−1) compared to NTJ 2 (32.66 Mg ha−1and 1.70 Mg ha−1) andICSV 93046 (38.44 Mg ha−1and 2.03 Mg ha−1). Net economic return from CSH 22 SS (US$ 681 ha−1) wasalso significantly higher than that from NTJ 2 (US$ 415 ha−1) and ICSV 93046 (US$ 539 ha−1). All cultivarsresponded to applied N up to 150 kg ha−1; however beyond 90 kg ha−1N rate, the increase in yield wasinsignificant. Estimated N use efficiency (NUE) values indicated that 90 kg N ha−1was an optimum Nlevel for sweet sorghum crop. Simulated soil water balance components revealed that reduction in totaltranspiration due to water stress was 20 to 45% compared to the no-stress. In case of water use efficiency,CSH 22 SS showed the highest economic returns per unit volume of water input. Based on these results, itis concluded that sweet sorghum hybrid CSH 22 SS at 90 kg N ha−1is the best remunerative combinationfor maximizing yield, economic returns and resource use efficiency
 
Date 2013-05-13
2017-01-05T19:41:06Z
2017-01-05T19:41:06Z
 
Type Journal Article
 
Identifier https://mel.cgiar.org/reporting/download/hash/lpL36T2b
Gajanan Sawargaonkar, Mukund Patil, Suhas Wani, E. Pavani, Belum Venkata Subba Reddy, Subramanian Marimuthu. (13/5/2013). Nitrogen response and water use efficiency of sweet sorghum cultivars. Field Crops Research, 149, pp. 245-251.
https://hdl.handle.net/20.500.11766/5224
Limited access
 
Language en
 
Rights CC-BY-NC-4.0
 
Format PDF
 
Publisher Elsevier
 
Source Field Crops Research;149,(2013) Pagination 245,251