tailieunhanh - A research to determine the suitable rice (Oryza sativa L.) harvesting time

The objective of this study was to determine the suitable rice harvesting time to obtain high paddy yield and quality milled rice. The experiment was conducted in a randomized split block design with four replications under continuous flood irrigation in 1988, 1989, and 1990 | Tr. J. of Agriculture and Forestry 22 (1998) 391-394 © TÜBİTAK A Research to Determine The Suitable Rice (Oryza sativa L.) Harvesting Time Halil SÜREK, Necmi BEŞER Thrace Agricultural Reseacrh Institute : 16 Edirne-TURKEY Received: Abstract: The objective of this study was to determine the suitable rice harvesting time to obtain high paddy yield and quality milled rice. The experiment was conducted in a randomized split block design with four replications under continuous flood irrigation in 1988, 1989, and 1990. Three planting times were praticed at May 10, May 20; and May 30. Four harvesting times were applied at 35, 42, 49, and 56 days after flowering (DAF). This study showed that maximum paddy yield and total milled rice, minimum berakage during milling, minimum unfilled and partially filled grains, acceptable moisture content, minimum chalky kernel in milled rice were obtained at 49 DAF. The early harvesting of rice causes both quantitative and qualitative losses. According to the results of present study, rice should be harvested 49 DAF in the Thrace part of Turkey. It may be one week earlier in the late planting. The variance analysis of data showed that there was no ihteraction between planting and harvesting times for field yield and total milled rice. En Uygun Çeltik (Oryza sativa L.) Hasat Zamanının Belirlenmesi Üzerine Bir Araştırma Özet: Bu araştırmanın amacı, yüksek çeltik verimi ve kaliteli pirinç elde etmek için, en uygun çeltik hasat zamanını belirlemektir. Araştırma 1988, 1989 ve 1990 yıllarında dört tekerrürlü olarak tesadüf bloklarında bölünmüş parseller deneme deseninde devamlı sulama koşullarında gerçekleştirilmiştir. 10, 20 ve 30 Mayıs tarihlerinde yapılan üç ekim zamanı uygulanmıştır. Çiçeklenmeden 35, 42, 49 ve 56 gün sonraları yapılan 4 hasat zamanı gözönünde bulundurulmuştur. Bu çalışmada, en yüksek tane verimi ve toplam pirinç randımanı, en düşük kırık oranı, en düşük boş veya kısmen dolu tane miktarı, kabul .