The Effect of Removed Squares and Flowers of Cotton (Gossypium hirsutum L.): II. Changes in Dry Matter Production, Distribution and Fruiting Pattern*

Bu çalışma, 1998 ve 1999 yıllarında, pamukta (Gossypium hirsutum L.) tarak ve çiçek uzaklaştırmanınkuru madde üretimi ve birikimi, koza sayısı ve meyve dağılımı üzerine etkisinin saptanması amacıyla,Harran Üniversitesi, Ziraat Fakültesi, Tarla Bitkileri Bölümü araştırma alanında, tesadüf blokları denemedeseninde dört tekrarlamalı olarak yürütülmüştür. Bitki materyali olarak, Sayar 314 pamuk çeşidikullanılmıştır. Çalışmada, taraklanma başlangıcından itibaren iki hafta boyunca oluşan tarakların (SR1-2),çiçeklenme dönemi başlangıcından başlayarak 10 hafta boyunca, ikişer hafta süreyle oluşan çiçeklerin(FR1-2, FR3-4, FR5-6, FR7-8, FR9-10) uzaklaştırılması ve Kontrol olmak üzere 7 konu uygulanmıştır. Generatif organ uzaklaştırmanın incelenen özelliklere etkisi farklı olmuştur. SR1-2, FR1-2, FR3-4 ve FR5-6 uygulamaları kontrole göre daha yüksek kurumadde üretmiş ve kurumadde birikimi farklı bitkiaksamlarında farklı bulunmuştur. Kontrole göre tüm uygulamalar daha düşük koza sayısı oluşturmuşturve her iki yılda da odun dalları hariç, tarak ve çiçek uzaklaştırma ile her pozisyondaki koza yüzdesideğişmiştir

Pamukta (Gossypium hirsutum L.) Tarak ve Çiçek Uzaklaştırmanın Etkisi : II. Kuru Madde Üretimi, Birikimi ve Meyvelenme Düzeni Ö

This study was conducted to determine the effects of squares and flowers removal on dry matterproduction and allocation, boll number and fruiting pattern of cotton plant (Gossypium hirsutum L.).Field experiments were conducted at research field of the Harran University Faculty of Agriculture,Department of Field Crops in years of 1998 and 1999 at southeastern of Turkey. Experiments werearranged in completely randomized block design with four replications. The Sayar 314 cotton (G.hirsutum L.) variety was used as plant material. Squares were removed through first two weeks ofsquaring (SR1-2), and flowers were removed with two weeks intervals from flowering initiation to theend of the tenth week of flowering (FR1-2, FR3-4, FR5-6, FR7-8, FR9-10) and control. Effects of removaltreatments on investigated traits were different. SR1-2, FR1-2, FR3-4 and FR5-6 have higher dry matterthan control and changed dry matter allocation among plant parts. All the treatments have lower bollnumber than control and removal of squares and flowers also changed boll percentage on positions andfruiting branches except on monopodium branches in both year

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