The effects of row spacing on yield and yield components of full season and double-cropped soybean
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Tarih
2007
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Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Özet: Ana ürün soya tarımına göre ikinci ürün soya tarımında verim düşüklüğü önemli bir kaygıdır. Bu çalışma, ana ürün ve ikinci ürün soya tarımında sıra arası mesafelerinin daraltılması ile olası verim artışını tespit etmek amacı ile Mustafa Kemal Üniversitesi Araştırma Çiftliğinde yürütülmüştür. 2004 ve 2005 yıllarında yürütülen çalışmada, iki soya çeşidi (A3935 ve S4240), 30, 50,-70 cm aralıklı ve çiftli (50 25 50 cm) sıralardan oluşan parsellere ekilmiştir. İkinci ürün soya tarımında tohum verimi ve incelenen diğer bitkisel özellikler ana ürüne göre daha düşük bulunmuştur. Sıra arası mesafesi ana ürün ve ikinci ürün soyalarda bitki boyu, ana dalda boğum sayısı, ana dalda bakla ve tohum sayısı, yan dalda bakla ve boğum sayısı ve tohum verimi üzerine önemli etkide.bulunmuştur. Verim ve diğer tüm incelenen özellikler üzerine çeşit x sıra arası interaksiyonu önemli bulunmamıştır. İki yıllık ortalama verimlere göre ana ürün soyada en yüksek tohum verimi 4142.5 kg ha"1 ile 50 cm sıra arası mesafeden elde edilirken ikinci ürün soyada en yüksek tohum verimi 3241.5 kg ha"1 ile 30 cm sıra arası mesafeden elde edilmiştir. Ana ürün soya üretiminde sıra arası mesafesinin 70 cm den 50 cm ye düşürülmesi ile % 23 oranında verim artışı sağlanırken, sıra arası mesafesinin daha da azaltılması verim artışı sağlamamıştır. İkinci ürün soya üretiminde 70 cm sıra arası mesafesine kıyasla 50, 30 cm ve çift sıra ekimde sırası ile % 24.8 ve 59.5 ve 35.6 oranında verim artışı kaydedilmiştir. Çalışma sonucunda elde edilen bulgular, Doğu Akdeniz bölgesi koşullarında sıra aralığının daraltılması ile ikinci ürün soya tarımında yaşanan verim düşüklüğünün azaltılabileceğini göstermiştir.
Abstract: Compared to full season soybean cropping systems, seed yield reduction is a major concern in double-cropped soybean production systems. This study was conducted at the Research Farm of Mustafa Kemal University, Hatay, Turkey, to determine if it is possible to enhance the yield of both full season and double-cropped soybean by narrowing row spacing. Two soybean cultivars, A3935 and S4240, were planted using row widths of 30, 50, and 70 cm, and twin row (50 25 50 cm) in 2004 and 2005. Seed yield and the other investigated plant parameters of double-cropped soybean were" lower compared to full season soybean. Row spacing had a significant effect on plant height, number of nodes per plant, main-stem pod and seed number, branch pod and seed number, and seed yield in both cropping systems. The highest seed yield (4142.5 kg ha"1) averaged over years was obtained from a 50-cm row width in full season soybean cropping, whereas a 30-cm row width had the highest seed yield (3241.5 kg ha"1) in double-cropped soybean. In full season soybean production, a 23% yield increase was recorded when row width was shifted from 70 to 50 cm, and no yield increase was recorded by further narrowing the row width. In double-cropped soybean, 24.8%, 59.5%, and 35.6% yield increases were recorded when soybean was planted in 50 and 30 cm, and twin row width, respectively, instead of a 70-cm row width. Our results indicated that yield reductions in double-cropped soybean production could be alleviated by narrowing the row width in the eastern Mediterranean region.
Abstract: Compared to full season soybean cropping systems, seed yield reduction is a major concern in double-cropped soybean production systems. This study was conducted at the Research Farm of Mustafa Kemal University, Hatay, Turkey, to determine if it is possible to enhance the yield of both full season and double-cropped soybean by narrowing row spacing. Two soybean cultivars, A3935 and S4240, were planted using row widths of 30, 50, and 70 cm, and twin row (50 25 50 cm) in 2004 and 2005. Seed yield and the other investigated plant parameters of double-cropped soybean were" lower compared to full season soybean. Row spacing had a significant effect on plant height, number of nodes per plant, main-stem pod and seed number, branch pod and seed number, and seed yield in both cropping systems. The highest seed yield (4142.5 kg ha"1) averaged over years was obtained from a 50-cm row width in full season soybean cropping, whereas a 30-cm row width had the highest seed yield (3241.5 kg ha"1) in double-cropped soybean. In full season soybean production, a 23% yield increase was recorded when row width was shifted from 70 to 50 cm, and no yield increase was recorded by further narrowing the row width. In double-cropped soybean, 24.8%, 59.5%, and 35.6% yield increases were recorded when soybean was planted in 50 and 30 cm, and twin row width, respectively, instead of a 70-cm row width. Our results indicated that yield reductions in double-cropped soybean production could be alleviated by narrowing the row width in the eastern Mediterranean region.
Açıklama
Anahtar Kelimeler
Orman Mühendisliği
Kaynak
Turkish Journal of Agriculture and Forestry
WoS Q Değeri
Q4
Scopus Q Değeri
Q1
Cilt
31
Sayı
3
