Response of growth and forage yield of pearl millet (Pennisetum galucum) to nitrogen fertilization rates and cutting height

Abstract

Two field experiments were conducted in the experimental station farm, faculty of agriculture, Ain Shams University at Shalakan, Kalubia Governorate, during the two growing seasons, i.e. 2009 and 2010, to investigate the response of growth and forage yield production of pearl millet cv. Shandaweel 1 to nitrogen fertilization rates and cutting height above the soil surface. Four nitrogen rates as ammonium nitrate (33.5%N), 0, 30, 45, and 60 kg N/fed, were arranged in the main plots and two levels of cutting heights (10 and 20 cm above the soil surface) in the subplot with four replicates in split-plot design. In the second season, nitrogen application increased up to 75 kg N/fed. The main results were as follows: Significant increases were appeared in plant height (cm), number of tillers/m 2 , number of leaves/m 2 , and leaf area index during the two growing seasons as nitrogen fertilization rates increased except at the third cut in the first season for plant height (cm) and number of tillers/m 2 , the first and second cuts of the first season for number of leaves/m 2 and at the third cut during the first season of study for leaf area index, while leaf/stem ratio was not affected significantly during the two growing seasons. Green forage yield/fed was significantly increased as nitrogen application rates increased during the two growing seasons except at the third cut of the first season of study. Increasing nitrogen fertilization rates up to 75 kg N/fed caused significant increases in dry forage yield during the three collected cuts in the second season of study and the second cut during the first season of study as well as in the combined results. Plant height (cm) was significantly affected as cutting height above the soil surface increased in the second cut (2009) and the first cut (2010) where plant height increased at 10 cm as cutting height than at 20 cm above the soil surface. Significant differences were appeared in number of tillers/m 2 as cutting height varied from 10 to 20 cm in the two studied seasons. The highest cut of number of tillers/m 2 was scored at 20 cm cutting height than those at 10 cm in the second and third cuts during the two growing seasons. A number of leaves/m 2 as well as leaf area index were influenced significantly as cutting height increased during the two growing seasons except in the second and third cuts during 2009 or the third cut during 2010 for number of leaves/m 2 and in the second cut of the first season (2009) and the third cut during 2010 for leaf area index. Significant effects were noticed in leaf/stem ratio as cutting height differed in the second or third cut in 2009 and in the three collected cuts in combined analysis. Green forage yield, dry forage yield/feddan increase significantly as cutting height differed during the two growing seasons as well as the combined results except in the first cut during the first season of study for dry forage yield. Green forage yield as well as dry forage yield was significantly affected by the interaction between nitrogen ferti...

Effect of growth stages and fertility levels on growth, yield and quality of fodder oats (Avena sativa L.)

“…Khogali et al, (2011) observed increasing trend of GFY with N fertilization in fodder oats. Similar results were observed by some other researchers in maize (Paschalidis X et al, 2015 andSharma et al, 2016), oats (Kumari et al, 2014), pearl millet (Shahin et al,2013 andAyub et al, 2007) and napierbajra hybrid (Tiwanaet al, 2004). The yield of an agricultural crop strongly dependent on the supply of mineral nutrients, particularly N (Sawan, 2006).…”

“…An increase in plant height with N fertilization was observed in maize (PaschalidisX et al,2015 andSharma et al, 2016), oats (Dawit and Wegi 2014) and rice (Mizanet al,2010). Several other researchers also found positive relation of N fertilization with plant height (Dubey et al2013, Shahin et al,2013, Oadet al,2004and Gasim, 2001 (Amin and Hasan, 2011). An increased leaf area index with N fertilization was observed in oats varieties (Dubey et al,2013) and in chickpea (Namvaret al,2011).…”

Effect of the Integrated Use of Mineral- and Bio-Fertilizers on Yield and Some Agronomic Characteristics of Fodder Pearl Millet (Pennisetum Glaucum L.)

“…Similar results were reported by Lakum et al, (2011), Bana et al, (2012), and Patel et al, (2016. The increased nitrogen availability, accompanied with the application of the nitrogen fixing bio-fertilizer, will push the growth of pearl millet and the increments in internode length and/or number of internodes, resulting in significantly taller plants (Shahin et al, 2013). Similar trend was reported by Ayub et al (2009), El-Sarag andAbu Hashem (2009) and Pathan et al (2010).…”

“…Similar to the fresh yield, Shahin et al (2013) reported an increase in the dry yield of three successive cuts of pearl millet with increasing nitrogen fertilization up to 75 kg N fed -1 . They attributed this result to the increase in photosynthetic products driven by the better leaf area, leaf weight and stem length resulting from the high N fertilization rates.…”

Produksi Simplisia Kumis Kucing dengan Perbedaan Cara Pemupukan dan Ketinggian Pangkas pada Rotasi Panen Tiga Minggu

“…Pola yang sama juga terjadi pada tanaman Pennisetum galacum. Pemangkasan 10 cm dari permukaan tanah secara signifikan memberikan produksi hijauan yang lebih tinggi daripada pemangkasan 20 cm dari permukaan tanah pada panen pertama, namun memberikan produksi hijauan yang lebih rendah pada panen kedua dan ketiga dan tidak berbeda nyata secara signifikan pada produksi total hijauan (Shahin et al, 2013). Rata-rata produksi per petak per panen adalah 1 247.4 g sehingga produktivitas daun segar kumis kucing setiap panen mencapai 3.35 ton ha -1 .…”